For 2000-2012 Yamaha Big Bear 400 Bore 83mm Cylinder Piston Gaskets Top End Kit

Top End Kit for Yamaha Big Bear 400

This 83mm bore cylinder piston gaskets top end kit for Yamaha Big Bear 400 rebuilds the engine top end with a new cylinder, piston, rings and gaskets. The 83mm bore piston and cylinder set for Yamaha Big Bear 400 restores compression on worn or seized top ends. Riders and mechanics rebuilding a 2000 to 2012 Big Bear 400 will find this top end kit for Yamaha a direct-fit solution.

Overview

This 83mm bore cylinder piston gaskets top end kit for Yamaha Big Bear 400 delivers a complete top end refresh in one box. The kit contains a new cylinder, piston, rings, pin, clips and gasket set sized at 83mm bore. It suits riders servicing a 2000 through 2012 Yamaha Big Bear 400 engine.

Built For Performance

• 83mm bore cylinder cast to match the original engine displacement
• Piston supplied with rings, wrist pin and circlips for a full rebuild
• Full top end gasket set to seal the cylinder, head and base
• Precision machined cylinder bore for proper piston-to-wall clearance
• Designed as a direct replacement for the OEM top end assembly

Fits These Machines

• for Yamaha Big Bear 400 (2000-2012)

On-The-Job Use

• Top end rebuild after low compression or oil burning
• Repair of a seized or scored piston and cylinder
• Routine engine refresh on a high-hour Big Bear 400
• Trail and farm use where reliable compression matters

Specs At A Glance

Good To Know

Q: Does this kit include every gasket needed for the job? A: It ships with a top end gasket set covering the cylinder, head and base. Confirm any additional seals on your machine before ordering.

Q: Will an 83mm bore directly replace my stock cylinder? A: The 83mm bore matches the stock displacement for the Big Bear 400. Verify your engine's original bore and serial number before installing.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.