New 8.5 8.6 10 BOLT TRUCK 30 Spline Rear Differential compatible for Case Kit compatible for GM Chevy
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2x Front LHRH CV Axle Assembly compatible for Subaru Forester Impreza WRX XV Crosstrek
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Primary Driven Clutch w/ Belt compatible for Polaris Sportsman 500 4X4 HO 1998-2005 1321706
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Secondary Driven Clutch compatible for Polaris Sportsman 700 2004 2005 2006 1322419 1322706
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Front Driveshaft Assembly compatible for Ford Expedition 2003-2006F-150 2004-2008 938-076
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Secondary Drive Clutch compatible for Yamaha G29 Drive 2007-2012 compatible for Golf Carts JW1-G6261-00-00
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Rear Driveshaft PropShaft Assembly compatible for Jeep Wrangler 1997-2006 4.0L 4WD 936-075
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Front CV Axle Shaft Pair 2 compatible for Pontiac Vibe compatible for Toyota Matrix 2009-2018 compatible for Corolla 1.8L
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1x Secondary Driven Clutch compatible for Polaris RZR 1000 XP 14-15 1323239 1323166 1323060
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Sencondary Sheave Assembly compatible for Yamaha Golf Cart G29 Drive 07-24 JW8-G6202-22-00
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Secondary Driven Clutch compatible for CF-Moto CFORCE 800 XC CF800AU-2A 19-23 0JYA052000
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CV Axle ShaftWheel Bearing Hub compatible for Ram 1500 Classic 2019 - 2020 515151
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Front Driveshaft Prop Shaft Assembly compatible for Jeep Cherokee 4.0L 4WD Auto 1987-2001
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Drivetrain: Getting Power to the Ground
Written by the PickupChain team · Last reviewed October 17, 2026
The drivetrain carries power from the transmission to the wheels: transfer case, driveshafts, differentials, axles and hubs. Clunks when shifting into drive, vibration that rises with speed or a whining noise from the axles are typical signs of worn parts.
Bigger tires change the effective gear ratio and make the truck feel slow and shift more often. Re-gearing the differentials to a numerically higher ratio, for example from 3.73 to 4.56, restores performance after a jump to 35 or 37-inch tires.
Lifts change driveshaft angles. Vibration after a lift often points to the driveshaft angle or worn U-joints. Carrier bearing drop kits or longer driveshafts are common fixes.
Frequently Asked Questions
+Do I need to re-gear for 35-inch tires?
Not always, but most trucks with highway gears benefit. Re-gearing improves acceleration, towing and transmission behavior. Use our tire size calculator to see how much larger the new tire is.
+What does a bad wheel hub bearing sound like?
A humming or grinding noise that gets louder with speed and changes when you turn is typical. On many 4x4 trucks the hub is a bolt-in unit that can be replaced as a whole.
+How often should I change differential fluid?
Check your owner's manual. Many trucks call for 30,000 to 60,000 miles, sooner with frequent towing or after deep water crossings.