03.2450 Pro-X Connecting Rod Kit for Yamaha YZ450FX YZ 450FX 2021-2023

Pro-X Connecting Rod Kit for Yamaha YZ450FX

This Pro-X connecting rod kit is a rebuild component for the Yamaha YZ450FX, carrying Pro-X part number 03.2450, and it restores the crank assembly on 2021 through 2023 models when the original rod has reached the end of its service life.

Overview

The Pro-X connecting rod kit for Yamaha YZ450FX gives riders a direct rebuild option for the crankshaft assembly. It supplies the connecting rod and matched components needed to press together a fresh crank for 2021 to 2023 YZ450FX machines. This connecting rod kit suits engine builders and owners doing a bottom end refresh on a used race bike.

Built For Performance

• Connecting rod sized for the Yamaha YZ450FX engine
• Kit pairs the rod with a big end bearing and crank pin
• Pro-X part number 03.2450 for straightforward ordering
• Built for high-rpm four-stroke motocross use
• Intended for crankshaft rebuilds, not as a bolt-on accessory

Fits These Machines

• for Yamaha YZ450FX 2021
• for Yamaha YZ450FX 2022
• for Yamaha YZ450FX 2023

On-The-Job Use

• Bottom end rebuilds after a rod bearing failure
• Preventive crank service on a high-hour race bike
• Engine refresh during a full top and bottom end rebuild
• Off-road and enduro use where the YZ450FX is ridden hard

Specs At A Glance

Good To Know

Q: Does this kit include bearings? A: The connecting rod kit is supplied as a matched assembly for the YZ450FX crank, and pressing it in calls for a shop with the right tooling. Q: Can I install it without splitting the cases? A: No, a connecting rod replacement requires splitting the crankcase and rebuilding the crankshaft assembly.

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