03.2440 Pro-X Connecting Rod Kit for Yamaha YZ450FX 2016-2020 YZ 450FX

Pro-X Connecting Rod Kit for Yamaha YZ450FX

This Pro-X connecting rod kit is a complete bottom-end rebuild component for the Yamaha YZ450FX, letting you restore crank assembly strength on 2016 through 2020 models, and it carries the 03.2440 reference number for easy ordering.

Overview

This connecting rod kit supplies the rod, bearing, and related hardware needed when rebuilding the crankshaft on a Yamaha YZ450FX. It gives riders and engine builders a dependable replacement for a worn or stretched rod so the bottom end can go back together with confidence. The Pro-X connecting rod kit for Yamaha YZ450FX is aimed at anyone refreshing a high-hour 450cc motocross engine.

Built For Performance

• Complete kit format covering the connecting rod and matched components
• Designed to meet or exceed original equipment tolerances for a proper fit
• Built from hardened steel for strength under high-rpm four-stroke loads
• Referenced as part 03.2440 for straightforward cross-checking
• Intended for crankshaft rebuilds rather than top-end service

Fits These Machines

• for Yamaha YZ450FX 2016
• for Yamaha YZ450FX 2017
• for Yamaha YZ450FX 2018
• for Yamaha YZ450FX 2019
• for Yamaha YZ450FX 2020

On-The-Job Use

• Bottom-end rebuilds after crank bearing or rod wear
• Race engine refreshes during off-season teardown
• Trail and enduro bikes racking up high engine hours
• Shop work where the crank assembly is pressed apart and rebuilt

Specs At A Glance

Good To Know

Q: Does this kit replace the whole crankshaft? A: No, it supplies the connecting rod and matched components for a rebuild, so the existing crank assembly must be disassembled and trued during install.

Q: Is this sold as a set of more than one rod? A: It is a single connecting rod kit intended for one engine, and quantity should be confirmed against your rebuild plan before ordering.

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