Helix Race 107mm BCD Chainring 38T e*thirteen
CR4HRA-148
e*thirteen Helix Race Chain ring 107BCD 38T Shimano/SRAM 11/12 speed …
The Helix Race 107 BCD Chainring is a high-value quality upgrade for Gravel and Road Cyclists using 4-bolt 107 BCD cranks such as SRAM® XPLR or Power Meter Cranks like Quarq Force or Rival. Take full advantage of e*thirteen’s widest range cassettes by dropping 2 teeth or more in chainring size with our smaller 38, 40, and 42T sizes. A combo that supports steeper climbs and faster descents.
Helix Race 107 BCD rings are forged from long wearing 7075 alloy and CNC optimized for stiffness, lightweight, and chain retaining performance. Black & grey color options to coordinate with e*thirteen 9-45T and 9-50T cassettes. Like all e*thirteen chainrings, they feature cross compatible tooth profiles, switching seamlessly between SRAM® or Shimano® 11 and 12 speed drivetrains for absolute build freedom. Chainline is determined by SRAM® crank assembly, 45mm for normal width cranks, 47.5mm for wide cranks.
SRAM® is a Registered Trademark of SRAM LLC.
PRODUCT SPEC
Color Black, Grey
Compatibility Compatible with 4-bolt 107 BCD SRAM® cranks and Quarq® power meter cranks
Material 7075 AL
Size 38T, 40T, 42T
Weight
38T: 66g
40T: 74g
42T: 80g
Product Fitment
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