Timing Chain Tensioner Guide Stopper for Yamaha YZ-FX 450 2016-2020

Timing Chain Tensioner Guide/Stopper for Yamaha YZ-FX 450

This timing chain tensioner guide and stopper assembly is made for Yamaha YZ-FX 450 models from 2016 through 2020, holding the cam chain tensioner in position and keeping the chain guide steady so valve timing stays consistent under load.

Overview

This timing chain tensioner guide and stopper is made for Yamaha YZ-FX 450 models spanning 2016 to 2020. It holds the tensioner in its bore and braces the chain guide so the cam chain runs true at high rpm. Riders and mechanics rebuilding the top end will find it a direct-fit replacement for a worn or seized guide and stopper.

Built For Performance

• Designed to hold the timing chain tensioner securely in its bore
• Stoppers keep the guide from walking under vibration
• Construction suited to the heat and oil environment of the cylinder head
• Direct replacement footprint for the original tensioner guide assembly
• Helps maintain steady cam chain tension across the rev range

Fits These Machines

• for Yamaha YZ-FX 450, 2016
• for Yamaha YZ-FX 450, 2017
• for Yamaha YZ-FX 450, 2018
• for Yamaha YZ-FX 450, 2019
• for Yamaha YZ-FX 450, 2020

On-The-Job Use

• Top end rebuilds on the YZ-FX 450
• Timing chain service and tensioner replacement
• Cam chain noise diagnosis and repair
• Off-road and enduro riding where valve timing must stay accurate

Specs At A Glance

Good To Know

Q: Do I need to replace the tensioner guide when servicing the timing chain? A: Yes, a worn guide or stopper can allow the chain to run loose even with a new tensioner. Replacing it at the same time saves a second teardown.

Q: Does this fit all YZ-FX 450 model years? A: It is listed for the 2016 through 2020 YZ-FX 450. Confirm your exact year and serial before ordering, as mid-run changes can affect fitment.

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