TKR4189 "M5" Hardened Steel Mod1 Pinion Gear w/5mm Bore (29T)

Improve drivetrain durability and performance with the Tekno RC TKR4189 “M5” Hardened Steel Mod1 Pinion Gear (29T), precision CNC‑machined from hardened steel for strength and efficient power transfer under demanding racing and bashing conditions. The lightweight design helps reduce rotating mass for smoother operation, while the oversized M5 set screw delivers a secure, slip‑resistant grip on the motor shaft to prevent stripping during high‑torque use. Featuring a 5 mm bore and standard MOD1 pitch, this pinion gear is compatible with a wide range of 1/8 scale vehicles that use a MOD1 5 mm pinion, including popular Tekno platforms such as the EB48 series (EB48, EB48.2, EB48.3, EB48SL), ET48 series (ET48, ET48.3), and SCT410 series (SCT410, SCT410.3). Laser‑etched tooth markings make gear identification quick and easy when adjusting for optimum speed and acceleration.