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Jeep Drivetrain & Axles

Big tires need the drivetrain to match. Shop ring and pinion gear sets (4.10s to 5.38s), selectable and automatic lockers, chromoly axle shafts, heavy-duty driveshafts, u-joints, hub assemblies, transfer case upgrades and complete axle assemblies for the Wrangler JK, JL, TJ and Gladiator JT. We carry Yukon Gear, Dana Spicer, ARB, Eaton, Motive Gear, G2 and more — the strength to turn 37s without breaking, at wholesale prices with free shipping over $199.

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// JEEP DRIVETRAIN & AXLES — QUESTIONS ANSWERED

What gear ratio do I need for 35s or 37s on a Jeep?
For 35-inch tires, 4.56 gears restore factory feel on a JL/JK; for 37s, go 4.88 or 5.13. Automatic transmission and heavy armor push you toward the deeper (numerically higher) ratio.
What is the difference between a locker and a limited-slip?
A locker forces both wheels on an axle to spin together for maximum traction — essential on rocks. A limited-slip only partially transfers torque and can still spin one wheel when flexed off-camber.
Do I need chromoly axle shafts for my Jeep?
If you run 35+ inch tires with lockers on rocky trails, chromoly shafts are cheap insurance — roughly 30–40% stronger than factory shafts, which are the most common breakage point on hard-wheeled Dana 44s.