Koswork Mod 1 M1 17T Aluminium Lightweight RC Pinion Gear 5mm Shaft - KOS03009-17

The Koswork KOS03009-17 is a Mod 1 17-tooth aluminum pinion gear designed for RC cars running a 5mm motor shaft. Built from lightweight aluminum, this Mod 1 pinion is a direct-fit option for 1/8 and large-scale RC vehicles that use the Mod 1 (M1) gear pitch standard. The 17T tooth count makes it suitable for applications where a balance of torque and speed is needed, and the included high-torque set screw ensures a secure, slip-free connection to the motor shaft.

Key Features

• Mod 1 (M1) gear pitch — compatible with standard M1 spur gears used across many 1/8 scale and large-scale RC platforms
• 17-tooth configuration suits mid-range gearing setups on M1 drive systems
• Machined aluminum construction keeps weight low compared to steel pinions
• Designed for 5mm motor shafts — check your motor shaft diameter before ordering
• High-torque set screw included for a firm, reliable shaft connection

Compatible With

• RC cars and buggies using Mod 1 (M1) pitch gearing
• 5mm diameter motor shafts
• Typically suits 1/8 scale off-road and on-road RC vehicles running M1 spur gears

What's Included

• 1x Koswork KOS03009-17 Mod 1 17T aluminum pinion gear
• High-torque set screw