DRIVEN RACING Rear Sprocket - 42 Tooth 5014-520-42T Legends X3000 Helmet Liner Replacement gasket kit for Koso

Replacement gasket kit for Koso 170CC Big Bore Kit

Can be post mounted horizontally or vertically with its 3/8"-16 thread post

Strategically positioned padding on the sleeves and sides of the slim fit chassis for additional tire roost coverage

With over 40 years of experience

1 -3/4" headpipes flow into 2 -1/4" muffler bodies for increased flow and improved performance

DRIVEN RACING Rear Sprocket - 42 Tooth 5014-520-42T Legends X3000 Helmet Liner Replacement gasket kit for KosoOne of the lightest 520 steel sprockets available today Designed using our proprietary EST Technology Performance and longevity all in one sprocket Attractive black zinc semi gloss finish Lowered surface to remove unnecessary weight