UL Chainring


UL Chainrings are the lightest 1x XC/Gravel chainrings on the market. Using the SL Chainring as the platform, we tweaked the arm design and strategically machined the chainring so that only minimal sacrifice was made in impact strength for large gains in weight reduction.

UL Chainrings are -5mm (Boost) offset for use with XCX Race MTB cranks on Boost bikes. If you're installing XCX Race MTB Cranks onto a non-Boost (142mm) bike, please use SL Chainrings. ALL XCX Gravel applications will use the UL ring.

UL Chainrings are not compatible with Helix cranks. Helix cranks require Helix rings available soon. 

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Product Spec

Chain retention
Updated M3 narrow-wide tooth profile eliminates chain noise, and decreases overall system wear.
TRS/LG1 Cranks: UL Chainring for SuperBoost chainline. SL Chainring for non-Boost and Boost chainline.

XCX Mountain Cranks: UL Chainring for Boost chainline. SL Chainring for non-Boost chainline.

XCX Gravel Cranks: UL Chainring for non-Boost chainline (142mm rear hub spacing)

10/11/12 speed. Compatible with both Shimano™ and SRAM™ 12 speed drivetrains.

Compatible with: Legacy e*thirteen cranks with direct mount interface, All TRS Cranks, All LG1 cranks.

Not compatible with: Helix
Lightest 1x chainring on the market. Ultralight design, minimal aesthetics, and updated M3 tooth profile.
7050 Aluminum
30-42t options
30t: 52g
32t: 54g
34t: 58g
36t: 64g
38t: 70g
40t: 79g
42t: 86g

Tech Info

Frequently Asked Questions

Guaranteed to be free from
defects in materials or workmanship
for 5 years after original purchase