Product Details
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: JTR1479.38zbk · finish: zinc-black
Fitment
- Yamaha YZF R1 2009–2014
- Yamaha YZF R1 World GP 50th Anniversary Edition 2012
- Yamaha YZF-R1 LE 2010
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.

















