83mm Cylinder Piston Top End Kit For Yamaha Big Bear Kodiak 400 5FU-11310-01-00

83mm Cylinder Piston Top End Kit for Yamaha Big Bear Kodiak 400

This 83mm cylinder piston top end kit replaces worn top end components on Yamaha Big Bear and Kodiak 400 models, and it cross-references OEM part number 5FU-11310-01-00 for a direct-fit rebuild.

Overview

This cylinder piston top end kit gives you the core parts needed to refresh the top end on Yamaha Big Bear 400 and Kodiak 400 machines. With an 83mm bore matching the OEM 5FU-11310-01-00 reference, it restores lost compression and power on tired engines. It is aimed at riders and mechanics handling a rebuild at home or in the shop.

Built For Performance

• 83mm bore matches the stock cylinder bore for Big Bear and Kodiak 400 engines
• Cross-references OEM part number 5FU-11310-01-00
• Piston and cylinder matched as a kit for consistent clearances
• New piston rings included for improved sealing and compression
• Cast construction handles the heat and load of utility ATV use
• Direct replacement for the worn top end on listed Yamaha 400 models

Fits These Machines

• for Yamaha Big Bear 400
• for Yamaha Kodiak 400

On-The-Job Use

• Rebuilding a smoking or low-compression Big Bear 400 engine
• Top end refresh on a Kodiak 400 used for farm and trail work
• Restoring power after a worn cylinder or scored piston
• Routine maintenance on high-hour utility ATVs

Specs At A Glance

Good To Know

Q: Does this kit include gaskets? A: The kit is built around the cylinder, piston, and rings listed in the specs. Confirm the included contents with the listing before ordering if you need gaskets.

Q: Can I install this without machining? A: Clearances and ring end gaps should be checked during assembly per your service manual. Have the top end measured if the old cylinder was badly scored.

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