Improve drivetrain strength and tuning versatility with the Tekno RC TKR4190 “M5” Hardened Steel Mod1 Pinion Gear (30T), precision CNC‑machined from hardened steel for durability and efficient power transfer under demanding racing and bashing conditions. The lightweight yet rugged design helps reduce rotating mass for smoother operation, while the oversized M5 set screw provides a secure, slip‑resistant grip on the motor shaft, minimizing the risk of 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 MOD1 5 mm pinion gears, 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 dialing in ideal speed and acceleration for your setup.