The GPM MAKX1239TS differential gear set is built from 20CrInTiH steel to beef up an ARRMA Kraton 8S driveline. Included are a spiral cut 39T ring gear and a 12T spiral input gear that smooth torque handoff and help reduce drivetrain losses. These components are hardened and blackened to withstand abrasive conditions and frequent high load use, keeping the truck predictable under acceleration and climbs.
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