A C49 high-carbon steel rear sprocket — JT's bread-and-butter replacement that swaps in like the OEM part for hundreds of street and sport fitments.
- C49 high-carbon steel, induction-hardened on the tooth crowns for wear life that outlasts cheap stamped aluminum on the street.
- CNC-machined to OEM bolt pattern and profile so it lines up to your hub without modification.
- Available in zinc-black (zbk) and self-cleaning (SC) variants on select tooth counts.
- Built by JT Sprockets — the world's largest sprocket manufacturer, with sprocket production for major OE bike brands.
- Sized for 520 pitch across stock and shorter/taller gearing options.
Spec: type: rear_sprocket · teeth: 38 · part_number: JTR488.38
Fitment
Fits 32 motorcycles across Kawasaki — including Kawasaki GPZ550 (Z550D1) Twin Shock 1981; Kawasaki GPZ550 (ZX550H1-H2) Unitrack 1982–1983; Kawasaki KZ550 C1-C4 1980–1983; Kawasaki KZ550 D1 (GPz) 1981; Kawasaki GPZ550 (Uni-Trak) 1982–1983; Kawasaki Z550 1981–1983; Kawasaki Zephyr 550 1980–1983; Kawasaki KZ750 B1/B2/B3/B4 1976–1979. Verify fit for your exact bike with the fitment checker at garamoto.com.
Specifications
| Sprocket Position | Rear |
|---|---|
| Material | C45 high carbon steel |
| Surface Treatment | Heat-treated and beadblasted |
| Best For | Off-road / Trail, Street |
Verified from Garamoto’s catalog & fitment data.

















