We have your differential parts in stock ready to ship today. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. Shop Differential Pinion Bearing Spacers and Sleeves at Summit Racing. Camshaft thrust Plate bolts 106 in-lbs. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. The pinion nut needs to be torqued to 250 ft/lbs. If the nut is loose then the crush sleeve must be changed. Speedway also offers the . This is a metal spacer, usually made of brass or aluminum, that is used to put tension between the bearings in order to keep them properly spaced and aligned. Next, attach the pinion nut onto the end of the shaft and use a torque wrench to tighten it to between 110-125 ft/lbs of torque. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. If youre looking for a good.economical 10-bolt rearend to rebuild or install into your hot rod, you will need to be able to accurately identify thedifferent units so you dont accidentally come home with a 7.5 or 8.2-inch differential. 2008 Sprinter 2500 170 - camper van. 24-32 INCH pounds?? 1988 C1500 Silverado, 5.7L with some go fast parts. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. First I measured the old crush sleeve as a starting point. When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. We think top-notch customer service is the most important thing we do. . Bear Preload IN. extended cab crew cab p 14 8 6 gm rear axle specifications 10 bolt cont, what are the torque specs on silverado rear diff cover you need rear axle pinion nut torque specs for a 98 chevy 12 ton pickup 2wd the nut is generally torqued to 260 300 ft lbs or 25 inch, proper torque specs for 2002 chevy silverado 1500 44 hub assembly to steering . Cover Bolts: 25 ft lbs. Generally speaking, these torque specifications will fall between 20-30 ft/lbs; however, for most applications ARB recommends a torque specification of right around 25 ft/lbs. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. Some pinion nuts require a special procedure to be properly installed. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. The rotational torque spec is between 15-19. The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. Tighten bolt to 20 ft/lbs. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. There were an untold number of 8.2-inch axle assemblies built, and although it is only marginally stronger than the 7.5-inch rearend, it does have some aftermarket support. Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. The amount of backlash varies depending on the quality and cost of the gearhead; more expensive precision gearheads have nearly zero backlash, while an inexpensive model may have as much as one degree or more. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. Then use lock-tight on the threads and tighten the nut back to where it was. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. An important step I like to take is to assemble the pinion and differential case without the crush sleeve or the new pinion nut. Ring gear bolts. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. This essential part is designed for use on vehicles with a 1 1/4 inch socket and 7/8 x 14 thread that can be found in many common automotive applications such as differential covers, yokes, and axle shafts. Additionally, this nut features a thread pitch of 11/16 x 20 which allows for easy removal during maintenance periods or when replacing bearings or other components within your axle assembly. Vendor Part Number. This is especially true when it comes to cycling. 10.50 PINION NUT: GM . The more torque produced, the less energy needed to move the car forward. The reason why it's so hard to turn the pinion nut is because not only are you crushing the crush collar but you're also pressing the outer pinion bearing onto the pinion gear. When looking at the housing from the rear, an 8.5 will have two squared off chunks of casting hanging on each side near the bottom of the differential. 9 Minutes Read / These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. It was in the 30-35 I "think" from GM. On top of that, many pickup owners find that making such modifications also provides them with a greater sense of control over their vehicles capabilities, allowing them to feel more confident and secure on their journey no matter what lies ahead on Oct 5 2022. There is a difference, but you cant see it unless you set both units on their side, and then measure the distance from that surface to the face where the ring gear attaches. big gear head. I have a 1993 Suburban K1500. You have to do it a little differently though. The control arm-mounting ears on top of this 7.5 rearend denotes it is usable for any 1978-88 GM A or G-body intermediate like a Cutlass, Monte Carlo, El Camino, Malibu, Regal, or Grand Prix. The pinion nut is designed to securely fasten the components together while also providing an effective seal against contamination from dirt, dust and other debris. Automotive Chassis Torque Specs. Some guys even go to the trouble of making a set-up bearing so you dont have to press on and remove the pinion bearing to try different shims. This process must be done carefully, gradually increasing the tightness of the nut in increments until it reaches the desired torque level required to rotate the pinion correctly. For over a decade, the 8.5-inch 10-bolt was widely used as an axle in many cars and trucks produced by General Motors. The torque required to seat the nut is very large, possible 200 ft-lbs or more. In most cases, however, even with a straight case, a certain degree of backlash can be tolerated up to 0.005? . This one is not as easy as it sounds. One will want to torque the pinion nut to 190- 240 ft lbs (Small Diff's) D60 and larger 225 -350 Ft lbs with the proper preload achieved. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. Looking for a driveshaft for your 67-72 C10? We show you how to keep that old GM transmission when swapping in an LS engine. Tightening Torque Clamp Load A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. Introduction. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Our LS swap adapter kits make it easy! The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. Peter - I'm retired but work part time as a pain in the ass. FORD: .020. It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. Jul 2, 2020 / I like to slowly tighten the new pinion nut until I take up all of the front to back free play. :yipi: Thats it?? PINION PRELOAD NEW INCH LBS. Record pinion flange rotating torque, with a torque wrench. How a GM 10-Bolt Differential Goes Bad. Is a GM 10 bolt rear end good? http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. It said you want this to be from 5-35. This ring and pinion install kit comes with new pinion bearings, carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. Too much won't hurt anything other than break the bolt. Dana 60. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. 8 & 9 BOLTS Locknut Size Threads per inch Steel Hex Locknut Steel Hex Flange Nut Grade C FNL Grade 9 Grade F Grade G Clamp Load (lbs.) The following are recommended Differential Set-Up Specifications for various differentials. Instead of using a C-clip to hold the axle in the housing, these axle assemblies use bolt-in axles, much like an 8.2 BOP rearend. To install your ring and pinion gears and/or differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. . As the speedometer rises, each gear shift is accompanied by an even more intense sensation of power, making every drive exhilarating and unforgettable. Order before 4PM and most parts ship out the SAME DAY. One thing often overlooked is the RTV sealant that needs to be applied to the splines (otherwise rear end grease can leak past the splines), and locktite on the new pinion nut. Mikz86TA. Is a GM 10 Bolt rear end good? Most 8.5-inch 10-bolt rearends have two extruded, cast-in lugs on the bottom of the differential housing at the 5:00 and 7:00 positions. CRAWLPEDIA Off-Road Encyclopedia. See other Red Line Oil Products that we recommend. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . Pinion nut has no torque spec. Backlash refers to the distance between two mating gear teeth when they are not engaged. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. Therefore, when building a performance car or truck that will be subjected to higher than normal stresses and torque loads, such as those produced by high horse power engines or increased traction created by sticky drag racing tires, it may be beneficial to choose a 12-bolt instead of a 10-bolt axle assembly in order to ensure maximum strength and reliability. Back off left-side adjusting nut approximately 2 slots. This article is a compilation of information and and specs relating to the venerable GM Corporate 14 Bolt full-floating rear axle - also referred to as the 10.5" (after the size of the ring gear in inches) or just simply the "14b" for short. See all 36 photos. The unique design and shape make installation easier while providing ample strength for off-road applications. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. Reports from multiple Chevy Bolt owners confirm that on May 28th, 2021, Chevrolet began taking steps to rectify any potential issues with these cars by paying off the original cost and allowing them to be taken off of the road. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. Although the 7.5-inch 10-bolt closely resembles the 8.5-inch housing, you can positively identify the Chevy7.5-inchrearend by measuring it. By doing this, it allows for the desired amount of pressure or preload to be applied on these bearings so they are able to work in harmony with each other within their particular drivetrain system. I have been taking it to ~250-300 ft lbs. Nut secures driveshaft yoke to pinion gear. By Albert. In addition, if the sleeve is over-crushed during installation then it must also be discarded and replaced with a new one as crushing it too much can cause damage to other components within your transmission. This is very important, because if you go too far the crush sleeve will be ruined. Not only is it important to keep the backlash variation under 0.005?, but in an ideal world, no variation should be present at all. On the other hand, if preload is too tight then you'll need to take out the pinion gear and add extra shims in order to reduce bearing pressure against the races. An 8.2 (shown) will have the same contour as the cover. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . Currie 60/70 : Torque . It's essential that you use enough force while tightening down the pinion nut so that your component will stay securely attached; however, it's equally important not to over-torque the part, which could cause permanent damage or deformation. If you installed a new seal, add 1 or 2 in-oz. you have it pretty much. Quaility Gears provide guaranteed performance. When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. 3/8" T-bolt - 30 ft lbs. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This applies to all types of vehicles with any type of gearing system regardless of pitch or size it doesnt matter which one you change as long as you can adjust it accordingly. If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. Some builders . Whilethe 10-bolt rearendslineage can be identified by the code stamps, which are usually on the passengers side axle tube, there are literally hundreds ofpotential codes for the three different 10-bolt rearend housings. These are two pinion gears for the 8.5-inch 10-bolt. Edit: when assembling the pinion into place, include the crush sleeve between the two pinion bearings. TORQUE-TENSION REFERENCE GUIDE Printed in U.S.A. Supply Part Number: 9702365 AS 06/14 Torque Poster . Ring gear bolt torque: 110 ft*lb. I got the price for the seal, and it is near $9. To do this, measure 10 thousandths of an inch on the shim and shift it accordingly. How tight should a pinion nut be? This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. Low-end torque refers to the amount of power and force generated by an engine at low revolutions per minute (RPMs), usually between 2000 and 3000. Final torque on the pinion nut is necessary to compress the crush sleeve. Both axles use a third member that contains the differential, which is made up of the . range. . 2429 Mercantile Drive Suite A 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. With the pinion bearing properly lubricated, increase or decrease . Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. Is that really all it takes? You Make The, SEMA 2022: GEARWRENCH Leveled Up With Distinct Quality Hand, Reignite Your Cat Eye Silverado Headlights With, SEMA 2022: Paragon Corvette Adds Performance Parts To, PRI 2022: FuelTech Talks About The Tech Of The FT700, PRI 2022: Concept Performance Now Offers Aluminum LTR, PRI 2022: Get Locked In With Forgeline Beadlock, Creative Automotion: The Art of Farmtruck &, Randy Bolig The Media Mover And Shaker Behind Chevy, How Ken Lingenfelters Love for Corvettes Benefits So, Shop Tour: Prestige Motorsports Is Your One-Stop Hot Rod, Full Factory Tour: How Edelbrock Makes Its Cast Aluminum, HOLY SHIP! Not only will you be getting the best quality performance with JEGS Pinion Nut, but you'll also have the convenience of knowing it's made to fit GM 8.875 inch 12-bolt car and truck axles. The torque it takes to crush . The GM 8.5" 10 Bolt axle, also known as the GM 8.6" axle or GM 10-Bolt, is available in many front and rear axle . However, the gears will not interchange with a Chevy 8.2. Oct 20, 2011. grade 8. When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. Or some do it by feel. Mine was a pita. The 12-bolt is generally considered to be the stronger of the two rear axles. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. Original gear ratios in pickups can range from 2.41:1 all the way up to 4.10:1, offering a wide variety of options depending on your needs and preferences. Give us a try, we think you'll be glad you did! This will ensure that your backlash is correct without having to swap the shims. When it comes to adjusting the backlash of your vehicle's pinion gear and carrier, there are a few rules of thumb to keep in mind. 8-Inch Ford Rear End Torque Specifications. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! The closer the teeth count is between the two gears, the higher the speed output will be; conversely, if there is a greater difference in tooth count, then more torque will be generated. The amount you tighten the nut (with or without the crush sleeve) is based on the amount of force measured in inch pounds it takes to rotate the pinion. JavaScript is disabled. Alternate Description. There is no way to happiness.happiness is the way. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . I thought the pinion nut would be more like 50-75 FOOT pounds? This ensures all parts remain tightly fitted together without any space between them, resulting in increased stiffness as well as reduced friction within the system as a whole. When it comes to suspension, preload is an important factor. 5. put back together and tight pinion nut to specified torque. Part Number. Another way to tell the difference between an 8.2 and an 8.5 rearend is to pull the cover and look at the bolt holding the spider gear crosspin. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. You can feel the power of all that torque in your bones as it propels the car forward even faster than before. 3/8" x all lengths 45-50 ft lb. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. But for all intents and purposes, the 10-bolt rearend is a great unit for a street/strip car, and can be stout enough to handle even the occasional abuse delivered by use at the racetrack. Find the application and ratio you need? This results in improved performance, longer life span and more efficient operation of the system. Sometimes, you need to push yourself. You keep on tightening the pinion nut until you are within the in-lb. I was able to pull the old crush sleeve from the pinion gear shaft without damaging it, so I just reused it and added a 0.51mm shim to it. This will cause the bearings to press more firmly against the races, thereby increasing preload tension. You can use this instead of the crush sleeve. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. Again, this would be okay in a daily driver or cruiser application, but if installed behind an engine with horsepower numbers climbing into the 400 range, you can plan on an eventual failure. The only torque you should be concerned with is the torque it takes to rotate the pinion gear alone, 8-14 inch pounds for old bearings, 16-29 in/lbs. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. The 8.5-inch 10-bolt rearends have ten 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring gear to the carrier. Well show you what to look for in this buyers guide. If it takes a 5/16-inch wrench to remove it, its an 8.5. Zach got enlisted by a friend to help rebuild the 7.5" factory 10 Bolt rear in the G-Body Monte that he is working on, so naturally it became a teaching moment. GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. Call 800.979.0122, 7am-10pm, everyday. Are all GM 10 bolts the same? As well as many other third member torque specs from Strange. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. checking the pre load with the inch lb torque . At West Coast Differentials we are committed to making your experience with us totally enjoyable. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. Is a GM 10 bolt rear end good? A forum community dedicated to all General Motors truck owners and enthusiasts. Have a seal puller if possible, makes getting the old one out a lot easier. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 Maintaining your car's paint finish is essential to keep it looking great. in order to compensate for the drag of the new seal, the nut should be tightened more until the rotational torque of the pinion slightly exceeds what was recorded earlier, but not by more that 5 in/lbs. For reference use at own risk. Once you have obtained your desired setting, it is important to apply preload while rotating the pinion in order to ensure proper engagement with its mating components. Reply Quote. The engine roars and the tires dig into the pavement as they work to move your car forward, pushing you back into your seat with tremendous force. A higher engine power combined with more torque enables cars to accelerate faster while using less fuel - making it much more efficient and cost-effective in the long run. Axle Retainer Plate Nuts: 3/8" Grade 8 - 45 ft lbs. We will safeguard your e-mail and only send content you request. Known alternatively as the GM 8.875-inch (referring to its ring gear diameter), Chevrolet's 12-bolt rear end is one of the most celebrated in the American hot-rodding scene. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. The small torque . Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. Just get a couple sacrificial pinion bearings and open them up a little so you don't have to press them on and off the pinion and add/remove shims until you get the correct preload shown on page 2 of the set up manual. Lighter and more efficient than its Ford 9-inch and Dana 60 rivals, the 12-bolt enjoys as much use amongst brand-loyal off-roaders as it . Pinion Nut FT. LBS. Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. on old bearings. Take Zach R. for instance. For bearings that are already in use, set preload at 15 inch-pounds; if they are new bearings then you should aim for 25 inch-pounds when setting preload. Unfortunately, once the tension on this type of sleeve has been released during installation it cannot be re-used since it will no longer hold the proper tension. Bearing Cap Torque (Foot Lbs.) While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. Not sure what to do here but I know I'm looking at a boat load of parts I do not have the money for right now so not sure what the hell I'm going to do. Pinion Nut Torque Spec. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. FOR 1994-2001 CHEVY S10's & GMC SONOMA's. **ALL TORQUE SPECS ARE PER GM FACTORY & HAYNES MANUAL**. It is important to note that if possible, it is best practice to use an old or used pinion nut for this operation, as new ones can often bind when tightened too much. It's got a 350 with a 10-bolt rear end. If it takes a 1/2-inch wrench to remove it, its an 8.2. Once you get close to the right pinion preload, shim thickness adjustments need to be made in the .003 and down range to make adjustments, small increments make a big difference in pinion preload. The correct way to do this is to use the yoke lock (part of the setup tool kit we bought) and use a breaker bar with a cheater pipe. If it checks out you can put your axles back in, C clips on, cross pin and bolt and you are ready to put the cover on and fill it with rear end lube! I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. This distance must be precise; if it is too small, the gears will bind together and cause mechanical stress which can lead to premature wear or failure. This website uses cookies or similar technologies to enhance your browsing experience. I agree that the preload needs to be about 30 inch pounds. . High-Performance Differentials, Axles & Drivelines, How to Measure and ID Differetial Housings, Filling Trim Holes in Car Body: Sheet Metal Welding Tips, Q&A With Our Race Experts: Tuning and Maintenance Tips, Small Block and Big Block Chevy Engine Flexplate Guide, How to Adapt LS Engine to 700R4 or Turbo 350 Transmissions, Chevy C10 Driveshaft Length Measuring Guide, GM Steering Column Compatibility, Interchange & Repair Guide. It also uses a 10 5/8-inch irregular-shaped cover. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. A full range of pinion gears is offered for the Chevy 10- and 12-bolt axle assemblies so you are able to select the correct gear set for your vehicle, application, and setup. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. Sometimes, pinion bearing preload can be a tricky procedure. if it is under twents hold the yoke with a pipe wrench and tighten just a little at at time till the torque wrench reads a constant 20 inch pounds for the revolutions. Pinion bearing preload is measured in inch-pounds, and is a measure of the rolling resistance of the pinion bearings after proper torque has been applied to the pinion nut. Not only does a torque vectoring differential perform the same basic tasks as a regular differential, but it also has an extra element that sets it apart: its ability to transfer torque between the left and right wheels independently. Use oil on the pinion nut washer surface during all assemblies . For 30 spline pinion axles, PYN10 offers a 10-bolt 8.5" pinion nut that is designed to provide secure and reliable performance in the toughest of conditions. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. May 22, 2021 / The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). The Series 3 carriers are good for use with 2.73 and lower gears (numerically higher), so 3.08 and 3.73 gears work well. The rear end is full of it. What is the gear ratio on a 10 bolt rear end? Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. While deciding on the ideal gear ratio for your bike, it's important to consider that a lower value will provide more comfortable pedaling, as you'll be able to spin the pedals at a higher cadence.
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