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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
e*thirteen Helix R 107 BCD 4-Bolt Chainring - 40t, 11/12-Speed, 107BCD, BlackThe 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*thirteens 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
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
Product Specifics
- Ring Position/Type: Chain Retaining Single Ring
- Tooth Count: 40
- Drivetrain Speeds: 11
- Drivetrain Speeds: 12
- Round or Oval: Round
- Chainring BCD: 107
- Material: Aluminum
- Color: Black
- Weight: 74
- Defined Color: Black
Today's Stock Status
UPC: Not available
EAN: 4711280340989
Manufacturer Part Number: CR4HRA-149
CR4211
183056-Q0-L
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 237 reviews
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Product Reviews
★★★★★ 5
Great moisturizer
I tried this after demaplaning and it worked great. I have decided to not keep up with dermaplaning so I now use this after shaving my legs to moisturize them. It works great for post shave moisturizing on the legs and face.
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Perfect Post-Dermaplaning Hydration!
After dermaplaning, this serum is my go-to! It’s lightweight, non-greasy, and instantly locks in moisture without feeling heavy. The hyaluronic acid gives my skin a plump, fresh glow, and I love how it soaks in without any residue. Perfect for keeping skin hydrated and healthy-looking!
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Reviewed in the United States on March 15, 2025
★★★★★ 5
I got Venus cleanser bottles are awesome items!
I got Venus cleanser bottles are awesome items!
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Reviewed in the United States on April 23, 2026
★★★★★ 4
Not the best product for post dermplaning
I was really looking forward to trying this as post care for dermaplaning, but not impressed. It just felt like a basic serum. It does feel moisturizing but it is similar to every other HA serum out there.
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Reviewed in the United States on May 13, 2024
★★★★★ 5
Smooth
This serum is very hydrating and it feels very good on my face. I would absolutely try this again.
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Reviewed in the United States on September 29, 2025