e*thirteen Helix R 107 BCD 4-Bolt Chainring
Sale price
$79.95
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Only 12 in stock
The e*thirteen Helix Race 107 BCD Chainring designed for 4-bolt 107 BCD 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
| Ring Position/Type | Chain Retaining Single Ring |
| Tooth Count | 40, 42 |
| Drivetrain Speeds | 12 |
| Round or Oval | Round |
| Chainring BCD | 107 |
| Material | Aluminum |
| Color | Black |
| Weight | 74, 81 |
| Defined Color | Black |
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