Complete Primary Sliding Sheave for Yamaha Kodiak 450 YFM450 4X4 03-06 18-19

Complete Primary Sliding Sheave for Yamaha Kodiak 450 YFM450 4X4

Complete Primary Sliding Sheave assembly for Yamaha Kodiak 450 YFM450 4X4 models, providing the sliding half of the primary clutch so the CVT belt can shift through its range.

Overview

This Complete Primary Sliding Sheave is built for Yamaha Kodiak 450 YFM450 4X4 machines that need the primary clutch rebuilt or replaced. The sliding sheave moves against the fixed sheave to change belt ratio as engine speed rises, which is how the Kodiak 450 delivers smooth acceleration and controlled engine braking. It suits riders doing clutch service on 2003 through 2006 and 2018 through 2019 Kodiak 450 4X4 models.

Built For Performance

• Complete sliding sheave assembly with the sheave face and hub
• Machined belt contact surface for consistent CVT ratio changes
• Designed to fit the primary clutch on Kodiak 450 YFM450 4X4 models
• Replaces a worn or grooved sheave that causes belt slip and shudder
• Balanced assembly to reduce vibration through the clutch
• Direct fit for the listed model years

Fits These Machines

• for Yamaha Kodiak 450 YFM450 4X4 (2003-2006)
• for Yamaha Kodiak 450 YFM450 4X4 (2018-2019)

On-The-Job Use

• Primary clutch rebuilds on Kodiak 450 4X4 ATVs
• Restoring smooth takeoff after belt slip or shudder
• Farm and utility work where consistent power delivery matters
• Trail riding where belt engagement needs to stay predictable

Specs At A Glance

Good To Know

Q: What are the signs the sliding sheave needs replacing? A: Belt slip, shudder on takeoff, and grooves worn into the sheave face are the usual indicators. A scored face prevents the belt from riding smoothly through the ratio range.

Q: Can this sheave be installed without pulling the whole clutch? A: Primary clutch work on the Kodiak 450 requires removing the clutch cover and the primary assembly from the crankshaft. Follow the service manual torque values when refitting.

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