ethirteen Helix Race 107 BCD Chainring

ethirteen Helix Race 107 BCD Chainring Info

Helix Race 107 BCD Chainring is a performance-focused upgrade for gravel and road riders running modern 4-bolt 107 BCD cranksets. Designed to pair seamlessly with wide-range drivetrains, this chainring allows riders to downsize chainring tooth counts without sacrificing efficiency—unlocking easier climbing and better cadence control across mixed terrain.

Forged from long-wearing 7075 aluminum and CNC-optimized for stiffness and low weight, the Helix Race 107 BCD Chainring delivers confident power transfer with excellent chain security. Smaller 38T, 40T, and 42T options make it easy to take full advantage of wide-range e*thirteen cassettes, creating a drivetrain combination that’s equally capable on steep climbs and fast descents.

The tooth profile is cross-compatible across SRAM and Shimano 11- and 12-speed drivetrains, offering true build flexibility for riders running SRAM XPLR setups or power meter cranks such as Quarq Force or Rival.

Helix Race 107 BCD Chainring Specs at a Glance

• BCD: 107 BCD, 4-bolt standard.
• Intended Use: Gravel and road drivetrains.
• Chainring Sizes: 38T, 40T, 42T.
• Drivetrain Compatibility: SRAM and Shimano 11- and 12-speed systems.
• Material: Forged 7075 aluminum.

Chainline Information

• Standard Width SRAM Cranks: Approx. 45mm chainline.
• Wide SRAM Cranks: Approx. 47.5mm chainline.

Design Benefits

1. Optimized Gearing: Smaller ring sizes support steeper climbs and broader cadence range.
2. Wide Compatibility: Works seamlessly with SRAM and Shimano multi-speed drivetrains.
3. Durable Construction: 7075 alloy resists wear while maintaining lightweight stiffness.

Final Take

The Helix Race 107 BCD Chainring is a smart choice for gravel and road riders looking to fine-tune gearing for demanding terrain. With durable construction, broad drivetrain compatibility, and sizing that complements wide-range cassettes, it delivers efficient performance and long-term value.