BIG BORE CYLINDER KIT 480CC (99MM) (13.5:1) 2012-polaris-sportsman-800-efi-big-boss-6x6-esi3304972 Direct replacement chain slider included

Direct replacement chain slider included

Front fork / Handlebar / Steering head / Bearing races / Lower bearing

BALL BEARING 6909ZZ 45X68X12MM

Do not use with fuel containing more than 10% alcohol

BIG BORE CYLINDER KIT 480CC (99MM) (13.5:1) 2012-polaris-sportsman-800-efi-big-boss-6x6-esi3304972 Direct replacement chain slider includedCylinder Works turns up the horsepower with their big bore 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.