Gates Polychain Rear Drive Belt For Harley Sportster 1991-2003
Gates Poly Chain: The Carbon Fiber Standard for Evolution Sportsters
The Gates Poly Chain® Rear Drive Belt for 1991–2003 Harley-Davidson Sportster models is the most advanced final drive solution available for the classic 5-speed Evolution era. While standard belts rely on aramid (Kevlar) cords that can stretch under aggressive riding, the Poly Chain utilizes Carbon Fiber reinforcement. This ensures that your Sportster 883 or 1200 benefits from the same high-torque technology used in industrial power transmission and competitive racing.
Patented Carbon Tensile Cord Technology
The heart of the Gates Poly Chain is its carbon fiber cords. This material science breakthrough provides several critical advantages for the Sportster rider:
- Zero Stretch: Carbon fiber is dimensionally stable. Once initial tension is set, the belt will not stretch, keeping your rear wheel perfectly aligned and eliminating the need for frequent axle adjustments.
- Unmatched Strength: Provides nearly double the horsepower capacity of standard aftermarket belts, making it the essential choice for performance-tuned engines and 1200cc “Big Bore” conversions.
- Instant Response: The lack of belt “give” results in a more direct connection between the throttle and the rear tire, ideal for the snappy power delivery of the XL platform.
High-Modulus Polyurethane Construction
Unlike standard neoprene rubber belts, the Poly Chain is constructed from a unique high-modulus polyurethane compound. This material is virtually immune to tooth shear and offers:
- Precision 14mm Pitch: The teeth are jacketed in a specialized, low-friction fabric that reduces operating temperatures and virtually eliminates “belt whine.”
- Debris Ejection: The tooth geometry is specifically designed to help eject road grit and small stones, preventing the punctures that lead to premature belt failure in the Sportster’s compact drivetrain.
- Chemical Resistance: Superior resistance to oil, grease, and road chemicals that can degrade standard rubber over time.
Fitment and Specifications (1991–2003)
This 128-tooth belt is a direct replacement for 5-speed Sportster models:
- Models: XL 883 and XL 1200 (including Hugger, Deluxe, Custom, and Sport variants).
- Tooth Count: 128 Teeth.
- Width: 1-1/8″ (1.125 inches / 28.5mm).
- OEM Cross-Reference: Replaces Harley-Davidson Part #40022-91.
- Origin: Proudly Made in the USA.
Gates Polychain Rear Drive Belt For Harley Sportster
Features
This Gates belt is the same brand of belt used by Harley-Davidson since 1980 due to their reliability
The teeth on the Gates belt has a very slick surface that is easy on the pulleys
The outer surface of the Gates belt is ribbed to help improve flexibility
Replaces OEM 40022-91
Made in the USA
| Product Style | AmericanV-twin Item # | Catalog Number | Store Sku | MFR. Product # | Availability |
|---|---|---|---|---|---|
| 1 1/8″ x 128 Tooth | 49879 | 600-616 | 3534 | PC-128-118 | In Stock: Ships within 24 hours |
This Product Fits
Harley Davidson
Sportster Custom XL1200C 1996-2003
Sportster Custom XL883C 1998-2003
Sportster Deluxe XLH883DLX 1991, 1992
Sportster Hugger XLH883HUG 1991-2003
Sportster Roadster XL883R 2002, 2003
Sportster Sport XL1200S 1996-2003
Sportster XLH1200 1991-2003
Sportster XLH883 1991-2003
