Namura Standard Bore Size B Top End Repair Kit for Yamaha YZ450F 2010-2013 97mm

Standard Bore Size B Top End Repair Kit for Yamaha YZ450F 2010-2013 97mm

This Namura standard bore size B top end repair kit provides all necessary components to restore compression and performance in the 97mm cylinder of 2010-2013 Yamaha YZ450F engines.

Overview

This top end repair kit includes a precision-machined piston, rings, wrist pin, and circlips specifically designed for the Yamaha YZ450F. It delivers reliable power restoration and is ideal for riders rebuilding their top end. The kit ensures a direct fit for the 97mm bore of 2010-2013 models.

Built For Performance

• Includes a high-strength cast aluminum piston for durable performance
• Precision-ground rings provide optimal seal and reduced blow-by
• Heat-treated wrist pin and included circlips ensure secure installation
• Designed to meet or exceed OEM specifications for reliable operation
• Standard bore size B sizing offers correct clearance for 97mm cylinders

Fits These Machines

• for Yamaha YZ450F (2010-2013)

On-The-Job Use

• Motocross racing and track days
• Off-road trail riding and desert riding
• Competitive enduro and hare scramble events
• Top end rebuilds for performance restoration

Specs At A Glance

Good To Know

Q: Does this kit include a gasket or cylinder sleeve? A: No, this top end repair kit contains only the piston assembly components; gaskets and sleeves must be purchased separately.

Q: Is the piston forged or cast? A: The piston is cast from high-strength aluminum alloy for consistent quality and reliable performance.

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