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e*thirteen Cassette - Helix Cassette Cluster 42-50T 12 Speed Bronze

Code: E13CS2009
  • Now $148
Currently no stock available  -   |   Usually dispatched within 48 hours
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  • 556% More range than any other cassette on the market

  •  42,50

  • Weight*: 345g

  • Compatible with SRAM and Shimano 12speed drivetrains

  • Improved shifting performance including Shimanoâ„¢ 12 speed compatibility

  • Improved interface between steel and aluminium clusters

To complete your cassette you will need:

E13CS2012 9-36 Cassette Cluster

The Helix Advantage

The HELIX R 12 Speed Cassette is an upgrade to any SRAM Eagleâ„¢ drivetrain, with more range than any other cassette on the market. The 9 tooth cog lets you step down one chainring size while keeping the same top end gearing and provides not only better ground clearance, but an overall lighter drivetrain. The aluminium one-piece 42/50 tooth cluster is easily replaceable so riders can keep their steel cluster for multiple seasons and freshen up granny as needed without buying a whole new cassette.

What is Helix?
It’s in our DNA to solve problems. Helix components are engineered to bridge the compatibility gap between SRAM™ and Shimano™ components, ensuring versatility and flawless performance. Future-proof your bike with e*thirteen Helix.

Works flawlessly with Shimano™ and SRAM™ 12s drivetrains despite the challenges in designing for the different cog spacing and chain behavior. Additionally, if your wheel has a SRAM™ XD™ Driver and you want to upgrade to Shimano™ 12s, you not only save money on the cassette, you don’t have to spend the extra on a new hub driver either.

Service and Tech Support
Unlike SRAM Eagleâ„¢, Helix R cassettes have replaceable gear clusters. That means ongoing service and replacement costs will be less than half that of SRAMâ„¢ cassettes.

All out products are shipped by FedEx providing unprecedented reliability and speed.

Shipping on all domestic orders over $620 (excluding bikes and home trainers) for delivery within the UK is completely FREE!

Bike and Home Trainers and oversize Goods FREE - FedEX

To qualify for free shipping:

Your delivery address must be within the United Kingdom Mainland (Channel Islands, Isle of Mann and Scotish Isles are not Mainland)

Your order, after any discounts, must be $62 or over

For all other orders including those under $62 there is a postage charge of $10


If you have any questions about delivery charges, times or none delivery please do not hesitate to get in touch by or by telephone on +44 (0)1782 768622. Handling is normally 48 hours, but at busy periods this may be extended but we will endeavour to process your order within 5 working days, please contact us for more details


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