Heavy Hitter 420 Primary Chain Drive Conversion Kit eDirtyBike Larger rear sprocket for improved

Larger rear sprocket for improved acceleration and torque

Adjustments: Rebound

Quick and seamless install in approximately 10 minutes

Wrap designed for Surron

Heavy Hitter 420 Primary Chain Drive Conversion Kit eDirtyBike Larger rear sprocket for improvedThe Heavy Hitter 420 Primary Chain Drive Conversion Kit is the lightest 420 primary kit on the market for the Sur Ron LBX, Segway X160 X260, E Ride Pro, Ventus ONE+, and 79Bike Falcon platforms. Built for riders who have pushed stock belts past their limits with upgraded motors and controllers. Pairs a 7075 T6 billet aluminum rear sprocket with a nitrided 52100 tool steel front sprocket and a Japanese non O ring chain for maximum efficiency and long