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e*thirteen Helix R 107 BCD 4-Bolt Chainring - 40t 11/12-Speed 107BCD Black

e*thirteen Helix R 107 BCD 4-Bolt Chainring - 40t 11/12-Speed 107BCD Black

In Stock
Retail Price $79.95
Shipping calculated at checkout.

Product Features

e*thirteen Helix R 107 BCD 4-Bolt Chainring - 40t 11/12-Speed 107BCD Black. The e*thirteen Helix R 107BCD Chainring designed for 4-bolt 107BCD cranks like SRAM Red or Force including power meter equipped cranks offers a performance upgrade for Gravel and Road cyclists. The 38 40 and 42 tooth rings pair perfectly with e*thirteen’s cassettes for more overall range and higher top speeds. Made from durable premium 7075 alloy theyre CNC sculpted for a high stiffness-to-weight ratio. Compatible with both SRAM and Shimano 11 and 12-speed drivetrains. Chainline is set by SRAM® Crank assembly.
  • Compatible with 4-bolt 107 BCD SRAM® cranks and Quarq® power meter cranks
  • M4 narrow-wide tooth profile provides Shimano and SRAM 11/12-speed chain compatibility (Including flattop chains) excellent chain retention and reduced wear
  • 4.8mm offset (Chainline is determined by SRAM® Crank assembly 45mm for normal width cranks 47.5mm for wide cranks)
  • Forged from premium 7075-T7 aluminum then extensively CNC optimized for light weight and technical aesthetics
  • Durable 7075-T7 construction for long wear-life stiffness and strength
    • TECH SPECS
    Ring Position/Type Chain Retaining Single RingTooth Count 40Drivetrain Speeds 11Drivetrain Speeds 12Round or Oval RoundChainring BCD 107Material AluminumColor BlackWeight 74Defined Color Black

    Shipping & Returns

    We offer a variety of shipping options based on the delivery location. Once you add items to your cart and enter a shipping address, you’ll see eligible options with pricing and estimated delivery dates. See below for frequently asked questions.

    Depending on the product shipping can take up to two-weeks? Please call if you need an item by a specific date as some of our products like bikes could be at different warehouse locations.


    Do you offer free shipping?
    Most orders over $50 ship free to the continental U.S. See our Free Shipping page for more information.  


    Do you ship internationally?
    Yes! Check out our International Shipping page for details.


    Can I pickup my order from one of Goodwynns stores?
    We offer in-store pickup at all our U.S. Store Locations. See more information on our In-store Pickups page.


    How quickly will my items ship?
    If your order is placed by 1pm (PT) Monday – Friday and you’ve selected an expedited (i.e. paid) shipping method, your items will ship same day if they’re in stock and ready to ship.

    Most other items ship within 1-2 business days. However, some products (e.g. bikes) require additional handling time up to 5 business days.


    How long will it take to receive my items?
    Shipping times vary based on delivery address and the shipping method selected in checkout.

    Once you add items to your cart and enter a shipping address, you can see estimated delivery dates by shipping method. After you’ve purchased, you can see the estimated delivery date on your order confirmation email.

    After your order has shipped, you can track your order via the tracking # provided in your shipping confirmation email and in your Order History.


    Can I use a package forwarder?
    Yes, but please be aware that Goodwynns and our partners cannot be held liable for damage that may occur after the items are delivered to the shipping address provided at the time of purchase.


    Does Goodwynns ship to PO boxes, APO, and FPO addresses?
    We happily ship to PO boxes, APO, and FPO addresses. However, shipping to these addresses can increase delivery time (up to 8 weeks in some cases) and free shipping offers do not apply.  Please note, products with lithium batteries cannot be shipped to APO/FPO addresses. 

    We can also ship to 3rd party boxes. Simply provide the address and box number when placing your order.


    How are larger items like skis, surfboards, and bikes shipped?
    Some products require special processing and shipping arrangements due to their large size. Pricing is set by product type and shipping service required.

    See our Freight and Oversized page for details.


    Do all brands ship outside the U.S.?
    Unfortunately, Goodwynns is unable to ship all products outside of the United States due to contractual restrictions. See all items that ship to Canada and Worldwide.  


    Do you require a signature for delivery?
    Most shipments are delivered without requiring a signature. Please Contact Us to request that a signature be required.

    Still need help? Contact Us

    Tech Specs

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