03.2309 Pro-X Connecting Rod Kit for Yamaha YZ250 1999-2026 YZ 250

Connecting Rod Kit for Yamaha YZ250

This Pro-X connecting rod kit is a complete engine rebuild assembly for Yamaha YZ250 models spanning 1999 through 2026, replacing the worn rod, bearing, and pin so the crank turns true under load. The kit carries the 03.2309 reference and delivers fresh bottom end components for a top end rebuild.

Overview

This Pro-X connecting rod kit restores the bottom end of a Yamaha YZ250 after hours of hard riding wear out the original rod assembly. The connecting rod kit for Yamaha YZ250 includes the rod, lower bearing, and wrist pin hardware needed to rebuild the crank with confidence. Riders and mechanics rebuilding a tired YZ250 engine choose this connecting rod kit for its consistent fit and dependable service life.

Built For Performance

• Complete kit with connecting rod, big end bearing, and crank pin
• Manufactured to reference 03.2309 for direct replacement fit
• Heat treated steel construction for high RPM durability
• Precision machined bore and pin surfaces for true rotation
• Designed as a service replacement for worn or seized rods
• Sold as a single kit covering one rod assembly

Fits These Machines

• for Yamaha YZ250 1999
• for Yamaha YZ250 2000
• for Yamaha YZ250 2001 through 2026 model years
• for Yamaha YZ 250 two stroke engines in this range

On-The-Job Use

• Bottom end rebuilds after crank bearing failure
• Top end refresh paired with a new piston and rings
• Race season teardown and preventive maintenance
• Restoring a used YZ250 engine before resale

Specs At A Glance

Good To Know

Q: Does this kit include the bearings? A: Yes, the connecting rod kit ships with the rod, lower bearing, and crank pin as a matched assembly for the Yamaha YZ250.

Q: Do I need to press the crank apart to install it? A: Yes, installing a connecting rod kit requires splitting the crank and pressing the new rod in with proper alignment tools.

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