TKR4158 5mm Bore Hardened Steel Long Shank Mod 1 Pinion Gear (18T)

Improve drivetrain strength and gear engagement with the Tekno RC TKR4158 5 mm Bore Hardened Steel Long Shank Mod1 Pinion Gear (18T), engineered for durability and consistent performance under demanding racing and bashing conditions. Precision machined from hardened steel, this long‑shank pinion provides increased surface contact with the motor shaft and smooth power transfer for efficient acceleration and torque delivery. Its 5 mm bore and Mod1 pitch make it compatible with a wide range of 1/8 scale vehicles that use 5 mm Mod1 pinions, 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 quick, accurate gear changes when tuning your vehicle’s speed and acceleration characteristics.