e*thirteen "Helix R 12-speed" Cassette Aluminium Cluster - 42-50T
- Weight : 0.33kg / 0.73lbs
- Packaging Unit: 1 Piece
- Product ID (PID): 39344
- Product safety
Weight
The heaviness of a BMX part, measured by weighing. It's worth noting that weight specifications for BMX parts can vary and may not always be precise. Several factors contribute to this:Manufacturer's weight specifications may be inaccurate or incomplete.The weight of two identical parts can also differ.We cannot weigh every individual part.For example, if there are handlebars in different heights, the manufacturer usually provides just one weight specification for all heights. When weighing two identical tires, you might get two different results.
Source: BMX Glossary
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Online: https://www.kunstform.org/en/ethirteen-helix-r-12-speed-cassette-aluminium-cluster-42-50t-p-39344
Printed: 11/05/2026
Printed: 11/05/2026
The e*thirteen "Helix R 12-speed" Cassette Aluminium Cluster - 42-50T is the aluminium cluster with the two largest cogs (42 and 50 teeth) of the two-piece Helix R 12-speed 9-50 cassette, the predecessor of the Helix Race. The steel cluster with the 9 to 36 tooth cogs stays on the hub, only the aluminium part is replaced; running costs are a fraction of a one-piece cassette. Check chain wear when swapping; from 0.5 % elongation e*thirteen recommends a new chain. Colour grey. For more range take the Helix Race 43-52 cluster, which also fits the 9-50 steel cluster.
Facts: e*thirteen "Helix R 12-speed" Cassette Aluminium Cluster - 42-50T
- Fits: e*thirteen Helix R 12-speed 9-50 (556 % range: 9-11-13-15-17-20-23-27-31-36-42-50)
- Version: 12-speed, aluminium cluster (the two largest cogs)
- Teeth: 42 and 50 teeth
- Material: aluminium
- Scope of Delivery: 1 aluminium cluster
- Extras:
- replaces the two aluminium cogs of the two-piece Helix cassette, the steel cluster stays
- check chain wear when swapping (new chain from 0.5 %)
- colours grey, naranja (orange), eggplant (purple)
