Gates 25G4238 Automatic Continuously Variable Transmission (CVT) Belt - Drive Belt

Gates G-Force CVT Belt for Power Sport Use

The Gates G-Force CVT Belt, part number 25G4238, is a power sport CVT belt built for demanding trail and work use on vehicles under 800cc. It uses an aramid cord, notched construction, and chloroprene belt material to support consistent transmission performance in CVT-equipped applications.

The G-Force WorkHorse line is Gates’ heavy-duty CVT belt family for riders and drivers who need a belt built around load handling, heat resistance, and stable operation in tough conditions. If you are searching for a Gates 25G4238 CVT belt for a Honda, Yamaha, or similar small-displacement powersport application, this part is built to match the OE-style dimensions and section profile listed below.

• Part number: 25G4238
• Power Sport CVT belt for automatic continuously variable transmissions
• Top width: 1.25 in. / 32 mm
• Outside circumference: 43.25 in. / 1099 mm
• RVS-R section with 28-degree angle
• Notched construction with fabric bottom
• Aramid cord material for added strength
• Chloroprene belt material in black finish
• OE performance rating

Detailed Product Overview

This Gates CVT belt is engineered around the dimensions and construction details that matter in continuously variable transmissions. The 1.25-inch top width, 43.25-inch outside circumference, and RVS-R section help ensure the belt matches the intended pulley geometry for the application. The notched design and aramid reinforcement are selected to support stable belt tracking and durability in demanding power sport use.

For buyers comparing Gates 25G4238 against OE-style replacements, this belt is a direct-specification option for small-engine CVT systems where consistent engagement and transmission response are important. It is a practical choice for Honda, Yamaha, and other powersport models that use the listed belt profile.

What This Belt Helps Address

• Belt slip during acceleration or load changes
• Loss of CVT response from a worn or stretched belt
• Noise or vibration caused by belt wear
• Reduced transmission efficiency from glazing or cracking
• Fitment issues when the belt width or circumference no longer matches specification

Installation Notes and Tips

Verify the belt dimensions, section designation, and CVT application before installation. Inspect the drive and driven pulleys for wear, contamination, or damage, since pulley condition can affect belt life and performance. Clean the CVT housing and follow the vehicle manufacturer’s service procedure for belt replacement and break-in.

For fitment-based searches, this part is commonly referenced for Honda and Yamaha CVT applications where the specified belt size and RVS-R profile are required. Confirm the vehicle’s original belt number and dimensions before ordering Gates 25G4238.

Quality Assurance

Gates manufactures this belt as part of its G-Force WorkHorse CVT line, using aramid reinforcement, notched construction, and OE performance specifications to support demanding powersport service. This part cross-references Dayco HP3021 and HPX5000 for the same application.