e*thirteen Helix R 107 BCD 4-Bolt Chainring - 42t 11/12-Speed 107BCD Black
$79.95
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e*thirteen Helix R 107 BCD 4-Bolt Chainring - 42t 11/12-Speed 107BCD Black
Alert me if this item is restocked.
We often restock popular items or they may be returned by the other customers.
We have cancelled your request.
Key Features
- Material: Aluminum*
- Weight: 0.38 lb*
Learn More About This Product
e*thirteen doesn’t make filler parts. Every component is designed to be an upgrade from stock, whether it's increasing gear range or increasing durability.
e*thirteen Helix R 107 BCD 4-Bolt Chainring - 42t 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, they’re 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
Details
| Ring Position/Type | Chain Retaining Single Ring |
| Tooth Count | 42 |
| Drivetrain Speeds | 11 |
| Drivetrain Speeds | 12 |
| Round or Oval | Round |
| Chainring BCD | 107 |
| Material | Aluminum |
| Color | Black |
| Weight | 81 |
| Defined Color | Black |
Product Identifiers
- SKU: CR4212
- Barcode: 4711280340996
- Manufacturer Part Number (MFPN/MPN): CR4HRA-150
- Model Number: D1449
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At the end of the day, we’re mountain bikers. We spend our weekends on the dirt, chasing turns, and geeking out over gear. We sell the brands we ride and love, and we care about every build like it’s headed into our own garage. Our goal is simple: to make buying your bike such a good experience that when we see you out on the trail, it feels like seeing a friend.
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*Disclaimers
- While every effort is made to ensure the accuracy of the above information, it is entered by real live humans and humans make mistakes. The majority of the bikes on our website are specced exactly as they come from the manufacturers. Any upgrades or customizations will be listed separately. Please confirm with Airpark Bike Co if there are any questions about the included specification for the bike you are looking at.
- Bike component specifications including (but not limited to) suspension, drivetrain, brakes, tires, and wheels are subject to change by the manufacturer without notice.
- Any indicated component upgrades included or purchased in conjunction with a bike will be replacements for OEM components on the bike. The bike will ship with the upgraded components installed, but will not include the OEM components. Credit for the OEM components are factored into the pricing for upgrades.
- Weights, where provided, are based on manufacturer estimates for the model and are not a guarantee. The actual delivered weight may vary between build kits or spec levels of the same product, as well as between sizes. It may also vary due to upgraded components, variation in amounts of lubricants and sealants, and other factors.
- The list of materials in automatically generated. It's intended to give a general overview of key materials and is not necessarily complete or accurate. Products may also contain other materials not listed. Contact us if you have questions about a particular product.