Helix Race - 12-Speed 13-52t Cassette

Helix Race - 12-Speed 13-52t Cassette


Regular price$345.95
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+
e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray. The e*thirteen Helix Race 12-speed 13-52t cassette features close ratio gearing specifically engineered for steep terrain where climbing time and shift frequency is high and descents are gravity driven. By placing more gears where riders spend the majority of the time they can optimize cadence and torque for improved climbing efficiency with smoother shifts under load for both analog and eBikes.
  • Close ratio gearing cassette for improved shifts under load
  • Lower fatigue and extended range (Bio or Battery) with sweet spot cadence for maximum efficiency
  • Seamless cross-compatibility with Shimano SRAM and TRP 12-speed drivetrains
  • Patented 2-Part design provides strength stiffness light weight and ease of service
  • Tested extensively for analog and e-bike use
  • Fits XD™ and XDR™ Drivers Only
  • Details: 

    Cassette Body Type SRAM XD 11/12 Speed, XDR
    Cassette Cogs 13-15-17-19-22-25-28-32-36-40-45-52
    Color Gray
    Defined Color Gray
    Defined Color Silver
    Designed for ebike Yes
    Drivetrain Speeds 12
    Range 13-52
    Weight 467g

    Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right part the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!


    We currently offer both economy and expedited shipping options though FedEX and USPS. 

    Orders totaling over $49 are eligible to ship for free via an economy ground option of our choice. 

    If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location. 


    Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.

    Returns or exchange requests for New or Used Bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.

    Returns for most other items may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind. 

    Clearance and open-box items may not be returned. 


    To request a return, please log in to your customer account by clicking the  customer account icon  Profile icon in the top right of any page or visit account.thundermountainbikes.com

    1. In the Email field, enter your email address and click Continue.

    2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.

    3. Go back to the online store and enter a six-digit verification code to log in.

    4. Find and click on the order that you want to submit a return for.

    5. If your order has more than one item, select only the items you want to return.

    6. Select a return reason and add a note for the store if needed.

    7. Click Request Return.

    Once your return request is approved, you will receive an email with shipping instructions and a return shipping label. 


    We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.


    If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.


    If you have any questions concerning our return policy, please contact us at:

    (928) 282-1106   |   sedona@thundermountainbikes.com

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