Koswork Mod 1 M1 17T Lightweight Hardened Steel RC Pinion Gear 5mm Shaft - KOS03006-17

The Koswork KOS03006-17 is a Mod 1 17-tooth hardened steel pinion gear designed for RC cars and buggies running a 5mm motor shaft. Built from lightweight hardened steel, this pinion gear is engineered to handle the stresses of high-torque applications without adding unnecessary rotating mass to the drivetrain. It ships with a high-torque set screw for a secure, rattle-free fit on the motor shaft. If you're replacing a worn pinion or specifying gearing for a new build, the KOS03006-17 is a precision-machined RC drivetrain component worth considering.

Key Features

• Mod 1 (M1) tooth profile — compatible with any M1 pitch spur gear setup
• 17-tooth count suits mid-range gearing ratios across a variety of RC platforms
• Hardened steel construction resists wear under sustained high-torque running
• Lightweight design reduces rotational mass compared to standard steel pinions
• Includes a high-torque set screw for a solid, slip-free mount on 5mm motor shafts

Compatible With

• Any RC car or buggy fitted with a 5mm motor shaft
• Mod 1 (M1) pitch spur gear systems
• Typically suits 1/8 scale and larger RC platforms using M1 pitch drivetrains

What's Included

• 1 x Koswork KOS03006-17 Mod 1 17T hardened steel pinion gear
• 1 x High-torque set screw