Namura Standard Bore Size B Top End Repair Kit for Yamaha YZ450F 2003-2005 95mm

Namura Standard Bore Size B Top End Repair Kit for Yamaha

This top end repair kit, with a 95mm bore size, includes pistons, rings, and gaskets for rebuilding the cylinder of 2003-2005 Yamaha YZ450F models.

Overview

The Namura Standard Bore Size B Top End Repair Kit is designed for Yamaha YZ450F models from 2003 to 2005. This top end repair kit includes a piston, rings, wrist pin, and all necessary gaskets for a complete cylinder rebuild. Ideal for riders maintaining their high-performance dirt bike, this top end repair kit ensures reliable engine restoration.

Built For Performance

• Precision-machined piston for accurate fit and smooth operation
• High-strength piston rings for excellent compression and longevity
• Complete gasket set prevents leaks and simplifies installation
• Matched to OEM specifications for reliable performance
• Includes wrist pin and circlips for secure assembly

Fits These Machines

• for Yamaha YZ450F (2003)
• for Yamaha YZ450F (2004)
• for Yamaha YZ450F (2005)

On-The-Job Use

• Motocross racing and competition
• Trail riding and off-road recreation
• Enduro and cross-country events
• Track day training and practice

Specs At A Glance

Good To Know

Q: Does this kit include a cylinder? A: No, the kit includes piston, rings, gaskets, and wrist pin only. The cylinder is not included.

Q: Do I need to hone the cylinder before installation? A: Yes, honing is recommended for proper ring seating and optimal performance.

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