Steel front sprocket | JT Sprockets
Exact fit to:
YAMAHA WR250 R-X,Y,Z,A,B,D,E,F,G,H,J,K,L [2008 - 2020]
2007 - 2009 YAMAHA WR 250 R
Transmision ratio:
| 12 | 13 | 14 | ||
| 38 | 3.17 -4.3% | 2.92 -11.6% | 2.71 -17.9% | |
| 39 | 3.25 -1.7% | 3.00 -9.3% | 2.79 -15.8% | |
| 40 | 3.33 +0.8% | 3.08 -7.0% | 2.86 -13.6% | |
| 41 | 3.42 +3.3% | 3.15 -4.7% | 2.93 -11.5% | |
| 42 | 3.50 +5.8% | 3.23 -2.3% | 3.00 -9.3% | |
| 43 | 3.58 +8.3% | 3.31 standard | 3.07 -7.1% | |
| 44 | 3.67 +10.9% | 3.38 +2.3% | 3.14 -5.0% | |
| 45 | 3.75 +13.4% | 3.46 +4.7% | 3.21 -2.8% | |
| 46 | 3.83 +15.9% | 3.54 +7.0% | 3.29 -0.7% | |
| 47 | 3.92 +18.4% | 3.62 +9.3% | 3.36 +1.5% | |
| 48 | 4.00 +20.9% | 3.69 +11.6% | 3.43 +3.7% | |
| 49 | 4.08 +23.4% | 3.77 +14.0% | 3.50 +5.8% | |
| 50 | 4.17 +26.0% | 3.85 +16.3% | 3.57 +8.0% | |
| 51 | 4.25 +28.5% | 3.92 +18.6% | 3.64 +10.1% | |
| 52 | 4.33 +31.0% | 4.00 +20.9% | 3.71 +12.3% | |
| 53 | 4.42 +33.5% | 4.08 +23.3% | 3.79 +14.5% | |
Specifications
| Manufacturer | JT Sprockets |
|---|---|
| Product code | JTF1590.12 |
| Material | Steel |
| Model | Yamaha |
| Position | Front |
| Type | Countershaft |
| Units | Each |
| Sprocket material | SCM420 Chromoly Steel Alloy |
| Chain pitch | 520 |
| Number of teeth | 12 |
| Product code | JTF1590.13 |
| Sprocket material | SCM420 Chromoly Steel Alloy |
| Chain pitch | 520 |
| Number of teeth | 13 |
| Product code | JTF1590.14 |
| Sprocket material | SCM420 Chromoly Steel Alloy |
| Chain pitch | 520 |
| Number of teeth | 14 |
Fits to following motorcycles:
YAMAHA WR 250 (2001 - 2001), YAMAHA YZ 250 F (2001 - 2022), YAMAHA WR 250 X (2008 - 2015), YAMAHA YZ 125 (2005 - 2023), GAS GAS EC 450 F (2013 - 2015), YAMAHA YZ 250 X (2016 - 2018), YAMAHA WR 250 F (2007 - 2023), GAS GAS EC 250 2T (2011 - 2012), YAMAHA YZ 250 (2021 - 2023), GAS GAS EC 250 F 4T (2011 - 2015), YAMAHA YZ 250 FX (2015 - 2022), YAMAHA WR 250 R (2008 - 2020), GAS GAS EC 300 F RACING 4T (2012 - 2015)