The GPM ER1200TS ring and pinion are precision-machined with a helical spiral profile to promote consistent tooth contact and efficient torque transfer in TRAXXAS E-REVO drivetrains. Surface nitride case hardening increases resistance to pitting and wear, extending component life under high load cycles. The kit includes stainless steel flat head fixings for secure installation, making it a durable upgrade option for demanding terrain or competitive use.