TKR4185 "M5" Hardened Steel Mod1 Pinion Gear w/5mm Bore (25T)

Improve drivetrain strength and tuning flexibility with the Tekno RC TKR4185 “M5” Hardened Steel Mod1 Pinion Gear (25T), 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 delivers a secure hold on the motor shaft to prevent slip 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 allow for quick gear identification when dialing in your ideal speed and acceleration setup.