25H 11/70 complete transmission standard "small chain" Ultra
-15%
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11/80 T8F Complete transmission for UItra "thin chain"
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Product description:
Complete ratio with a gear ratio from the front 11 teeth to the back 55 teeth.
This transmission is the "fast transmission" and is suitable for flat terrain with only few gradients. You reach a higher final speed!
This transmission is installed on most Ultra Scooters as a standard transmission.
Dimensons sprocket / pinion:
Legend of the chain:
Symbolic picture, mounted on Ultra eScooter
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Technical specifications complete transmission
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| Designation | 25H 11/70 Complete transmission |
| Front sprocket | 11 Teeth |
| Rear sprocket | 70 Teeth |
| Chain | 25H 62 limbs (AW - Axle shaft distance 265mm) |
| Weight | approx. 360g |
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Technical specifications pinion
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| outer diamteter | approx. 25,5mm |
| inner diameter | 10mm |
| diameter of the groove | 8,5mm |
| width / thickness | approx. 3mm |
| Teeth | 11 |
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Technical specifications sprocket
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| Number of teeth | 70 Teeth |
| outer diameter (Da) | approx 144mm |
| inner diameter (di) | 38mm |
| pitch circle (Lk) | 48mm*6 |
| mounting hole(B) | 5mm |
| width | approx. 3mm |
| Suitable for the chain name | 25H |
| included in delivery: | |||
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| 1x Complete transmisssion 11/70 25H | 11z sprocket front, 70z sprocket, 25H Chain 62 limbs |
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