Namura Standard Bore Piston Kit for Yamaha Big Bear 250 fits 2007 2008 2009 71mm

Standard Bore Piston Kit for Yamaha Big Bear 250

This standard bore piston kit is a direct replacement for the Yamaha Big Bear 250, restoring compression and performance in the 71mm bore engine. The Standard Bore Piston Kit includes the piston, rings, and wrist pin for a complete top-end rebuild.

Overview

The Namura Standard Bore Piston Kit for Yamaha Big Bear 250 is a precision-engineered replacement designed to refresh worn 71mm cylinders. This Standard Bore Piston Kit delivers reliable power and longevity for 2007, 2008, and 2009 models, making it an essential component for engine restoration.

Built For Performance

• High-strength aluminum alloy construction for durability
• Precision-machined piston skirt reduces friction and wear
• Includes premium piston rings with proper ring gap
• Hardened wrist pin for secure connection
• Direct-fit design requires no modification

Fits These Machines

• for Yamaha Big Bear 250 (2007-2009)

Specs At A Glance

Good To Know

Q: Does this kit include a piston pin and clips? A: Yes, the standard bore piston kit comes with a hardened wrist pin and retaining clips for a complete installation.

Q: Can I use this piston kit without cylinder resizing? A: This is a standard bore kit meant for original 71mm cylinders in good condition; always measure the cylinder bore and taper before installation.

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