03.4406 Pro-X Connecting Rod Kit for Kawasaki KLX450R 2008-2021 KLX 450R

Connecting Rod Kit for Kawasaki KLX450R

The Pro-X Connecting Rod Kit restores the crank assembly in your Kawasaki KLX450R, pairing a forged rod with a matched bearing and pin so the top end rebuild goes back together with known-tolerance parts. Cross-reference 03.4406 for the KLX 450R application.

Overview

This connecting rod kit is a complete crank rebuild component set for the Kawasaki KLX450R, supplying the rod, lower bearing, and wrist pin hardware needed to replace a worn or stretched rod. It is aimed at riders and shops doing a bottom-end refresh on a high-hour four-stroke. The kit cross-references 03.4406 for straightforward parts lookup.

Built For Performance

• Forged steel connecting rod construction for strength under high-rpm loads
• Matched lower rod bearing included for a complete lower-end fit
• Wrist pin and circlips supplied for one-stop assembly
• Machined to factory tolerances for a drop-in crank rebuild
• Sold as a kit to keep matched components together

Fits These Machines

• for Kawasaki KLX450R 2008
• for Kawasaki KLX450R 2009
• for Kawasaki KLX450R 2010
• for Kawasaki KLX450R 2011
• for Kawasaki KLX450R 2012
• for Kawasaki KLX450R 2013
• for Kawasaki KLX450R 2014
• for Kawasaki KLX450R 2015
• for Kawasaki KLX450R 2016
• for Kawasaki KLX450R 2017
• for Kawasaki KLX450R 2018
• for Kawasaki KLX450R 2019
• for Kawasaki KLX450R 2020
• for Kawasaki KLX450R 2021

On-The-Job Use

• Bottom-end rebuilds on high-hour KLX450R engines
• Crank service after a rod knock or seized lower bearing
• Race-season teardowns where the crank is pulled for inspection
• Trail and enduro bikes being brought back to spec

Specs At A Glance

Good To Know

Q: Does this kit include everything needed for a crank rebuild? A: It supplies the rod, lower bearing, pin, and circlips as a matched set. Press work and crank truing still require the proper tools and a qualified shop.

Q: Can I reuse my old crank pin? A: Reusing worn hardware on a rebuilt crank risks early failure, so fitting the supplied matched components is the safer path. Check the crank halves for wear before assembly.

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