2015 - 2020
BETA RR 390
Front sprocket
| Supersprox
Fits to:
BETA RS 4T 390 [2015 - 2016]
BETA RR-S 4T 390 [2017 - 2020]
BETA RR 4T 390 [2015 - 2020]
2015 - 2019 BETA RR 390
Transmision ratio:
| 11 | 12 | 13 | 14 | 15 | 16 | ||
| 38 | 3.45 -6.4% | 3.17 -14.2% | 2.92 -20.8% | 2.71 -26.5% | 2.53 -31.4% | 2.38 -35.7% | |
| 39 | 3.55 -4.0% | 3.25 -12.0% | 3.00 -18.8% | 2.79 -24.6% | 2.60 -29.6% | 2.44 -34.0% | |
| 40 | 3.64 -1.5% | 3.33 -9.7% | 3.08 -16.7% | 2.86 -22.6% | 2.67 -27.8% | 2.50 -32.3% | |
| 42 | 3.82 +3.4% | 3.50 -5.2% | 3.23 -12.5% | 3.00 -18.8% | 2.80 -24.2% | 2.62 -28.9% | |
| 43 | 3.91 +5.9% | 3.58 -3.0% | 3.31 -10.4% | 3.07 -16.8% | 2.87 -22.4% | 2.69 -27.2% | |
| 44 | 4.00 +8.3% | 3.67 -0.7% | 3.38 -8.3% | 3.14 -14.9% | 2.93 -20.6% | 2.75 -25.5% | |
| 45 | 4.09 +10.8% | 3.75 +1.6% | 3.46 -6.2% | 3.21 -12.9% | 3.00 -18.8% | 2.81 -23.8% | |
| 46 | 4.18 +13.3% | 3.83 +3.8% | 3.54 -4.2% | 3.29 -11.0% | 3.07 -16.9% | 2.88 -22.1% | |
| 47 | 4.27 +15.7% | 3.92 +6.1% | 3.62 -2.1% | 3.36 -9.1% | 3.13 -15.1% | 2.94 -20.4% | |
| 48 | 4.36 +18.2% | 4.00 +8.3% | 3.69 standard | 3.43 -7.1% | 3.20 -13.3% | 3.00 -18.8% | |
| 49 | 4.45 +20.6% | 4.08 +10.6% | 3.77 +2.1% | 3.50 -5.2% | 3.27 -11.5% | 3.06 -17.1% | |
| 50 | 4.55 +23.1% | 4.17 +12.8% | 3.85 +4.2% | 3.57 -3.3% | 3.33 -9.7% | 3.12 -15.4% | |
| 51 | 4.64 +25.6% | 4.25 +15.1% | 3.92 +6.2% | 3.64 -1.3% | 3.40 -7.9% | 3.19 -13.7% | |
| 52 | 4.73 +28.0% | 4.33 +17.4% | 4.00 +8.3% | 3.71 +0.6% | 3.47 -6.1% | 3.25 -12.0% | |
| 53 | 4.82 +30.5% | 4.42 +19.6% | 4.08 +10.4% | 3.79 +2.5% | 3.53 -4.3% | 3.31 -10.3% | |
| 54 | 4.91 +33.0% | 4.50 +21.9% | 4.15 +12.5% | 3.86 +4.5% | 3.60 -2.5% | 3.38 -8.6% | |
| 55 | 5.00 +35.4% | 4.58 +24.1% | 4.23 +14.6% | 3.93 +6.4% | 3.67 -0.7% | 3.44 -6.9% | |
Specifications
| Manufacturer | Supersprox |
|---|---|
| Sprocket color | Steel |
| Sprocket material | Steel |
| Compatible with | 27-1-1901-11;27-1-1901-17 |
Product description
Supersprox - Front sprockets. Made from SCM-435 steel to ensure a long life. Ultra hard surface layer reduces friction to prevent power loss caused by chaindrag. Fully lightened with radial holes for off road and street bikes. Grooved teeth for off road applications that allows good dirt removal.