2007 - 2021
KTM 250 EXC F
Rear sprocket - ktm or 42
| JT Sprockets
Fits to:
KTM EXC-F 250 [2017 - 2017
KTM XCF-W 250 Champions Edition [2010 - 2010]
KTM EXC-F 250 [2017 - 2021]
KTM EXC-F 250 Sixdays [2019 - 2021]
KTM XCF-W 250 [2007 - 2016]
KTM EXC-F 250 [2007 - 2018]
KTM XCF-W 250 Sixdays [2011 - 2011]
KTM EXC-F 250 Sixdays [2010 - 2019]
KTM EXC-F 250 Champions Edition [2010 - 2010]
2012 - 2016 KTM 250 EXC F
Transmision ratio:
| 11 | 12 | 13 | 14 | 15 | 16 | ||
| 38 | 3.45 -7.0% | 3.17 -14.7% | 2.92 -21.3% | 2.71 -26.9% | 2.53 -31.8% | 2.38 -36.1% | |
| 40 | 3.64 -2.1% | 3.33 -10.3% | 3.08 -17.2% | 2.86 -23.1% | 2.67 -28.2% | 2.50 -32.7% | |
| 41 | 3.73 +0.3% | 3.42 -8.0% | 3.15 -15.1% | 2.93 -21.2% | 2.73 -26.4% | 2.56 -31.0% | |
| 42 | 3.82 +2.8% | 3.50 -5.8% | 3.23 -13.0% | 3.00 -19.2% | 2.80 -24.6% | 2.62 -29.3% | |
| 44 | 4.00 +7.7% | 3.67 -1.3% | 3.38 -8.9% | 3.14 -15.4% | 2.93 -21.0% | 2.75 -26.0% | |
| 45 | 4.09 +10.1% | 3.75 +1.0% | 3.46 -6.8% | 3.21 -13.5% | 3.00 -19.2% | 2.81 -24.3% | |
| 46 | 4.18 +12.6% | 3.83 +3.2% | 3.54 -4.7% | 3.29 -11.5% | 3.07 -17.4% | 2.88 -22.6% | |
| 47 | 4.27 +15.0% | 3.92 +5.4% | 3.62 -2.7% | 3.36 -9.6% | 3.13 -15.6% | 2.94 -20.9% | |
| 48 | 4.36 +17.5% | 4.00 +7.7% | 3.69 -0.6% | 3.43 -7.7% | 3.20 -13.8% | 3.00 -19.2% | |
| 49 | 4.45 +19.9% | 4.08 +9.9% | 3.77 +1.5% | 3.50 -5.8% | 3.27 -12.1% | 3.06 -17.5% | |
| 50 | 4.55 +22.4% | 4.17 +12.2% | 3.85 +3.6% | 3.57 -3.8% | 3.33 -10.3% | 3.12 -15.9% | |
| 51 | 4.64 +24.8% | 4.25 +14.4% | 3.92 +5.6% | 3.64 -1.9% | 3.40 -8.5% | 3.19 -14.2% | |
| 52 | 4.73 +27.3% | 4.33 +16.7% | 4.00 +7.7% | 3.71 standard | 3.47 -6.7% | 3.25 -12.5% | |
| 53 | 4.82 +29.7% | 4.42 +18.9% | 4.08 +9.8% | 3.79 +1.9% | 3.53 -4.9% | 3.31 -10.8% | |
Specifications
| Manufacturer | JT Sprockets |
|---|---|
| Chain pitch | 520 |
| Type | Drive |
| Units | Each |
| Color | Black| Orange |
| Material | 7075-T6 Aluminum| Carbon Steel |
| Position | Rear |
| Number of teeth | 42 |
| Style | Twinstar |
Product description
Steel outer ring Heat-induction hardened high-carbon steel JT advanced tempering process achieves hardness that could last six times longer than a 7075-T6 aluminum sprocket, enhancing power transfer performance Alu core Lightweight aviation-grade ergal 7075-T6 aluminum Precision made using state of the art laser cutting and CNC equipment, resulting in an ultra lightweight race power design