Clutch Primary Fixed Sheave For Yamaha Grizzly 400 YFM400 2007-2008 ATV 20-Teeth

Clutch Primary Fixed Sheave for Yamaha Grizzly 400 YFM400 2007-2008 ATV 20-Teeth

This 20-tooth primary fixed sheave is the stationary half of the primary clutch on Yamaha Grizzly 400 YFM400 ATVs from 2007 to 2008, giving the drive belt a true, stable surface to ride against from engagement through top speed.

Overview

This clutch primary fixed sheave is built for the Yamaha Grizzly 400 YFM400 and carries a 20-tooth design matched to the primary clutch assembly. It serves as the non-moving face that the drive belt runs against as the sliding sheave moves in and out. Riders replace this clutch primary fixed sheave when the original shows belt wear, grooving, or damage, and this 20-tooth primary fixed sheave restores consistent belt contact on 2007 to 2008 Grizzly 400 machines.

Built For Performance

• 20-tooth design matched to the Grizzly 400 primary clutch
• Machined belt face for even belt contact and reduced slip
• Balanced to limit vibration through the rev range
• Direct-fit replacement for the factory primary fixed sheave
• Built to handle the torque loads of the YFM400 engine
• Designed to pair with the stock sliding sheave

Fits These Machines

• for Yamaha Grizzly 400 YFM400
• for Yamaha Grizzly 400 4x4 models 2007-2008
• for Yamaha Grizzly 400 ATV models 2007-2008

On-The-Job Use

• Trail riding and weekend ATV use
• Farm, ranch, and property chores
• Utility work with light to moderate loads
• Hunting and backcountry travel
• Routine Grizzly 400 clutch service

Specs At A Glance

Good To Know

Q: What does the 20-tooth count mean for my Grizzly 400? A: The tooth count identifies the sheave profile matched to the primary clutch on the Grizzly 400, so a mismatched count can cause poor belt behavior. Verify your machine calls for a 20-tooth sheave before ordering.

Q: Should the sliding sheave be replaced at the same time? A: If the sliding sheave is worn, scored, or binding, replacing both halves together keeps the primary clutch operating as a matched pair. Otherwise inspect it and replace only if it shows damage.

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