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

60-Day Returns · Family Owned Since 1973 · Ships From Wisconsin
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e*thirteen Helix R 107 BCD 4-Bolt Chainring - 40t, 11/12-Speed, 107BCD, Black
About This Item
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.
Key Features
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
Specifications
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
Specifications
Brand e*thirteen
Condition New
Model D1449
Colour Black
Manufacturer part number CR4HRA-149
UPC 4711280340989
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Wheel & Sprocket has been family owned since 1973, with shops across Milwaukee, the Fox Valley, Madison and Chicagoland. Every order is picked and packed by people who ride, and if something is not right a mechanic will answer you — not a script.
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Wheel & Sprocket Outlet · Item 4711280340989

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