HSP
To fit 3.18mm 540 motor shafts. M3 3mm grub screw included. 13-13.8mm diameter.
.12 .18 RC Nitro Engine 2 Shoe Clutch Flywheel Bell Kit
.21 + RC Nitro Engine 2 Shoe Clutch Flywheel + Bell Kit 6mm Axle
.21 + RC Nitro Engine 2 Shoe Clutch Flywheel + Bell Kit 6mm Nut
.21 + RC Nitro Engine 2 Shoe Clutch Flywheel Kit 6mm Axle
.21 + RC Nitro Engine 2 Shoe Clutch Flywheel Kit 6mm Nut