Max-Torque Racing Clutch (BSP/Chinese OHV), Green Spring (2800 rpm), Preferred for Mini-Bikes. Works well on stock or mild motors. These Max-Torque Clutches are specially built for NR Racing to engage at higher rpms and are stronger than the standard fun kart clutch. The clutch includes a built in clutch key in the drive hub to reduce chances of losing the key or struggling to find one that fits properly.

(note: 10 & 11 tooth clutches have black springs for slightly higher engagement)

4 cycle - 3/4" bore - #35 chain, Comes boxed with mounting hardware and instructions

(10 Tooth, & 18 thru 21Tooth Clutches slightly higher - see price in shopping cart)