e*thirteen Helix R Chainring
Best high performance upgrade for riders seeking lightweight durability and precision.
This is the upgrade for riders who want to squeeze more precision out of their drivetrain without overhauling the entire system. It trades stock simplicity for a rigid, CNC-machined build that locks the chain in place, giving you a noticeably more responsive feel on every climb.
$79.95
at
Airpark Bike Co
More Helix options
Who it's for
- Weight-conscious cross-country and trail riders seeking maximum efficiency
- Cyclists looking for a high-quality alternative to stock drivetrain components
- Aggressive mountain bikers demanding reliable performance on rough descents
Who should skip it
- Detail-oriented owners who prioritize long-term pristine component aesthetics
- Budget-focused commuters or casual riders seeking simple replacement parts
- Riders with standard 104 BCD or direct-mount crank systems
Performance breakdown
Chain Retention
The M4 narrow-wide profile keeps your chain locked in during rough rides.
Material Durability
7075-T7 aluminum offers exceptional resistance to wear over long-term use.
Power Transfer
Rigid CNC-machined construction ensures every pedal stroke translates directly to speed.
Drivetrain Compatibility
Seamlessly integrates with most modern 11 and 12-speed SRAM and Shimano setups.
Weight Efficiency
Optimized alloy structure balances lightweight performance with necessary structural integrity.
Installation Versatility
Standard 107 BCD mounting makes swapping onto power meters straightforward and simple.
Key Specs
Number of Teeth
40
BCD
107 mm
Material
7075-T7 Aluminum
Weight
172 g
Mounting Type
4-bolt
Chain Compatibility
11/12-speed
Offset
4.8 mm
Shape
Round
Intended Use
Gravel, Road
Surface Finish
CNC Machined
Know before you buy
Still have a question?
Ask Metto anything about the e*thirteen Helix R Chainring before you decide.