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: JTR486.38
Fitment
Fits 78 motorcycles across Kawasaki, Yamaha, Suzuki — including Kawasaki KR250 A1-A2 1984–1985; Kawasaki ZR550 B2-B8 Zephyr 1991–2000; Kawasaki GPZ400 R (ZX400D); Kawasaki Ninja 400 2018–2024; Kawasaki EX400 HLF Ninja 2020; Kawasaki EX400 GMFAN Ninja ABS 2021; Kawasaki EX400 Ninja ABS KRT 2019–2020; Kawasaki EX400 Ninja ABS SE 2020. 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.

















