AXIAL Racing SMT10 Internal Hard Steel Differential Gear Set SMJ1202 by GPM  [SMJ1202]

SMT10 Internal Hardened Gear Set

This SMJ1202 hard steel gear set is made for the AXIAL Racing SMT10 differential case and supplied as a 2 piece set. The hardened steel construction increases resistance to wear compared with typical stock parts, helping the diff keep a stable mesh when subjected to heavier torque during trail driving and club-level competition.

Fitting is straightforward for those familiar with SMT10 diffs: remove the diff internals, swap the stock gears for the SMJ1202 pieces, set gear mesh and backlash, and confirm the diff spins freely using the original bearings and shims. No extra tools are supplied, so use your usual diff tools and a clean bench to prevent contamination.

From a setup perspective, hardened steel gears deliver long service life and steady power transfer rather than altering gear ratios. They are ideal when stock gears show wear or when higher powered motor and gearing choices demand tougher internals. Regular inspection and proper lubrication preserve smooth engagement and longevity.

Fit this set when increasing internal diff durability on SMT10 builds or when planning a reliability-focused drivetrain upgrade.