STANDARD BORE HIGH COMPRESSION CYLINDER KIT 249CC (77MM) (13.5:1) 2011-polaris-sportsman-800-efi-big-boss-6x6-esi1956568 Hard rubber compound to help

Hard rubber compound to help retain studs

This kit includes adjustable mass flyweights for more flexible tuning options

ITEM WEIGHT IS 3-4LBS

Later printing have been corrected

STANDARD BORE HIGH COMPRESSION CYLINDER KIT 249CC (77MM) (13.5:1) 2011-polaris-sportsman-800-efi-big-boss-6x6-esi1956568 Hard rubber compound to helpCylinder Works turns up the horsepower with their high compression kits that look just like stock, but theyre not! All cylinders are nickel silicon carbide plated for a low friction surface, better heat dissipation and more durability. All kits come with everything, except the mechanic! Gaskets and seals, along with a Vertex piston, rings, wrist pin and circlips.