Koswork Mod 1 M1 14T Lightweight Hardened Steel RC Pinion Gear 5mm Shaft - KOS03006-14

The Koswork KOS03006-14 is a Mod 1 14-tooth hardened steel pinion gear designed for RC cars running a 5mm motor shaft. Machined from lightweight hardened steel, this pinion gear is built to handle the stress of high-torque applications while keeping rotating mass low. It ships with a high-torque set screw to ensure a secure, slip-free fit on the motor shaft — a small detail that matters when you're running hard.

Key Features

• Mod 1 (M1) tooth pitch for compatibility with standard Mod 1 spur gears used across a wide range of 1/8 and 1/10 scale RC cars
• 14-tooth count suited to higher top-speed gearing ratios depending on spur gear pairing
• Machined from hardened steel for durability under sustained load and heat
• Lightweight construction reduces rotational inertia compared to standard steel pinions
• Includes a high-torque set screw for a firm, reliable mount on 5mm motor shafts

Compatible With

• RC cars and buggies fitted with a 5mm shaft motor
• Any drivetrain using Mod 1 (M1) spur gears
• Typically suits 1/8 scale and larger 1/10 scale RC platforms — confirm your motor shaft diameter and spur gear pitch before ordering

What's Included

• 1x Koswork KOS03006-14 Mod 1 14T hardened steel pinion gear
• High-torque set screw (pre-fitted or included)