Description
JT rear sprocket steel 45t-520 yam. Manufacturer part number JTR857.45.
WPS part number 55-85745.
JT rear sprocket steel 45t-520 yam.
In stock
JT rear sprocket steel 45t-520 yam. Manufacturer part number JTR857.45.
WPS part number 55-85745.
WPS lists this part for the following vehicles. Match your exact model and year.
Follow the position, mounting and installation notes in the product description. Modified vehicles may require different parts.
| Years | Make | Model |
|---|---|---|
| 1982–1983 | Yamaha | XT550 |
| 1984–1995 | Yamaha | XT600 |
| 1988–1990 | Yamaha | XV250 Route 66 |
| 2008–2017 | Yamaha | XV250 V-Star 250 |
| 1995–2007 | Yamaha | XV250 Virago |
Source: WPS vehicle-fitment data · WPS part 55-85745 · Checked November 11, 2026.
| Weight | 1.79 lbs |
|---|---|
| Dimensions | 9.8 × 10.45 × 0.65 in |
Check chain pitch, sprocket tooth count and the installed gearing before ordering.
Select your motorcycle to check for matching parts.

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