The Helix Race cassette from E*thirteen is a highly advanced 12-speed cassette specifically designed for mountain biking. With an impressive gear ratio of 9 to 50 teeth, it offers a wide range of gears that allow for effortless handling of both steep climbs and fast descents. This cassette is not only lightweight at 375 grams but also robust enough to withstand the demands of off-road riding. The Helix Race cassette is an essential accessory for discerning cyclists who value performance and reliability. It has been developed with cutting-edge technology to ensure precise shifting and a long lifespan, making it an ideal choice for all mountain bike enthusiasts.
| Number of teeth smallest pinion | 9 x | 
| Number of teeth largest pinion | 50 x | 
| Gradation of pinion sizes | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 | 
| Number of pinions | 12-speed | 
| Weight | 375 g | 
| Item number | 20554618 | 
| Manufacturer | e*13 | 
| Category | Bike cassettes | 
| Manufacturer no. | 73.220.620 | 
| Release date | 16/4/2022 | 
| Colour | Blue | 
| Exact colour description | Intergalactic | 
| Bike area of use | Mountain bike | 
| Number of pinions | 12-speed | 
| Gradation cassette | 9-50 | 
| Gradation of pinion sizes | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 | 
| Number of teeth smallest pinion | 9 x | 
| Number of teeth largest pinion | 50 x | 
| Model year | 2023 | 
| Country of origin | Taiwan | 
| CO₂-Emission | |
| Climate contribution | 
| Weight | 375 g | 
| Length | 25 cm | 
| Width | 25 cm | 
| Height | 5 cm | 
| Weight | 564 g | 
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