POLISPORT Fork Boots 8365000004 Universal Precharger helping to prevent engine failure

helping to prevent engine failure Keeps the engine lubricated to optimize performance Recommended for bikes with upgraded engines using the Koso North America 170cc Big Bore kit and 4V cylinder head (sold separately)

Perfect for use with the new Harley-Davidson auto tuner Stock H-D mufflers will not work with this head pipe because of the stock muffler’s internal construction

This "Upper" or "Top" velocity stack is sold seperately from the lower billet machined piece shown in picture ( Lower Part # ABY-09R1-REVB)

Operating temperatures between between -40° and +85° C

Increases horsepower and maximizes fuel burn

POLISPORT Fork Boots 8365000004 Universal Precharger helping to prevent engine failureThe material stretches to fit bigger forks Avoid mud and dirt on the fork's stanchions Protect from scratches and damage Durable and resistant