1989 - 1998
YAMAHA WR 250
Steel front sprocket
| JT Sprockets
Fits to:
YAMAHA WR250 V [1989 - 1989]
YAMAHA WR250 ZH [1996 - 1996]
YAMAHA WR250 ZK [1998 - 1998]
YAMAHA WR250 ZF [1994 - 1994]
YAMAHA WR250 ZG [1995 - 1995]
YAMAHA WR250 ZE [1993 - 1993]
YAMAHA WR250 ZB,ZD [1991 - 1992]
1991 - 1997 YAMAHA WR 250
Transmision ratio:
| 12 | 13 | 14 | ||
| 38 | 3.17 -17.7% | 2.92 -24.0% | 2.71 -29.4% | |
| 46 | 3.83 -0.3% | 3.54 -8.0% | 3.29 -14.6% | |
| 47 | 3.92 +1.8% | 3.62 -6.0% | 3.36 -12.7% | |
| 48 | 4.00 +4.0% | 3.69 -4.0% | 3.43 -10.9% | |
| 49 | 4.08 +6.2% | 3.77 -2.0% | 3.50 -9.0% | |
| 50 | 4.17 +8.3% | 3.85 standard | 3.57 -7.1% | |
| 51 | 4.25 +10.5% | 3.92 +2.0% | 3.64 -5.3% | |
| 52 | 4.33 +12.7% | 4.00 +4.0% | 3.71 -3.4% | |
Specifications
| Manufacturer | JT Sprockets |
|---|---|
| Chain pitch | 520 |
| Type | Countershaft |
| Position | Front |
| Units | Each |
| Number of teeth | 10 |
| Material | Steel |
| Material | Steel |
| Position | Front |
| Units | Each |
| Chain pitch | 520 |
| Type | Countershaft |
| Number of teeth | 11 |
| Chain pitch | 520 |
| Number of teeth | 12 |
| Type | Countershaft |
| Position | Front |
| Units | Each |
| Material | Steel |
| Material | Steel |
| Position | Front |
| Type | Countershaft |
| Units | Each |
| Chain pitch | 520 |
| Number of teeth | 13 |
| Material | Steel |
| Units | Each |
| Chain pitch | 520 |
| Number of teeth | 15 |
| Type | Countershaft |
| Position | Front |
| Color | Natural |
| Material | Chromoly Steel |
| Position | Front |
| Units | Each |
| Chain pitch | 520 |
| Number of teeth | 18 |
| Type | Countershaft |