Primary Fixed Sheave For Yamaha Grizzly 350 YFM350 / Grizzly 450 YFM450 07-14

Primary Fixed Sheave for Yamaha Grizzly 350 YFM350 / Grizzly 450 YFM450 07-14

This primary fixed sheave serves as the stationary half of the primary clutch assembly on Yamaha Grizzly 350 YFM350 and Grizzly 450 YFM450 models from 2007 through 2014, working with the sliding sheave to guide the drive belt through its ratio range.

Overview

This primary fixed sheave is the stationary face of the primary clutch on Yamaha Grizzly 350 and Grizzly 450 ATVs, pairing with the movable sheave to keep the drive belt aligned as engine speed changes. It is built for riders replacing a worn, grooved, or damaged sheave on 2007 to 2014 Grizzly models. Installing a sound primary fixed sheave restores smooth belt engagement and predictable power delivery to the wheels.

Built For Performance

• Machined belt contact surface for consistent belt tracking
• Balanced construction to limit vibration at higher engine speeds
• Direct-fit replacement for the stock primary fixed sheave
• Construction suited to the torque loads of the Grizzly 350 and 450 engine
• Designed to work with the stock primary clutch assembly
• Finish and tolerances checked for a clean install

Fits These Machines

• for Yamaha Grizzly 350 YFM350
• for Yamaha Grizzly 450 YFM450
• for Yamaha Grizzly 350 4x4 models 2007-2014
• for Yamaha Grizzly 450 4x4 models 2007-2014

On-The-Job Use

• Trail riding and recreational ATV use
• Farm and ranch chores around the property
• Utility work with light to moderate loads
• Hunting and backcountry access
• General Grizzly 350 and 450 maintenance

Specs At A Glance

Good To Know

Q: Do I need to replace the sliding sheave at the same time? A: If the sliding sheave shows wear, grooving, or sticking, replacing both halves together keeps the primary clutch working as a matched set. Otherwise inspect the sliding sheave and replace it only if it shows damage.

Q: Will this sheave fit both the Grizzly 350 and the Grizzly 450? A: It is listed for the Grizzly 350 YFM350 and Grizzly 450 YFM450 from 2007 to 2014, so it covers both models within that range. Confirm your exact model and year before ordering, since fitment can vary by machine.

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