e*thirteen Helix Chainrings - MTB & Gravel

A chainring for (almost) every crank

e*thirteen Helix chainrings are machined from 7075-T6 aluminium (the Helix steel ring is, well, steel) with a narrow-wide tooth profile for strong chain retention, low noise and long wear. They work with SRAM and Shimano 11 and 12-speed chains.

Choose from direct mount rings for e*thirteen cranks (flip-flop for 52 or 55mm chainline), 3-bolt rings for SRAM cranks, 8-bolt rings for Helix Race Carbon cranks, gravity-specific GR rings, and 107 BCD rings for gravel cranks like SRAM XPLR.

The Inside Line:
The chainring is the easiest way to make your bike look faster. Whether it actually is depends on your legs.

Features:

7075-T6 aluminium (Helix steel ring: steel)
Narrow-wide tooth profile
SRAM and Shimano 11/12-speed chain compatible
Direct mount: flip-flop 52/55mm chainline
28 to 42T
Colours to match Helix cassettes

Notes:

Some colours are run-out stock, available while they last.
Variants without a stock code are ordered in on request.

Which ring?

Helix Race / Plus / steel direct mount: e*thirteen Helix, TRS, LG1 and XCX direct mount cranks.
Helix Race 3-bolt: SRAM 3-bolt direct mount cranks.
Helix Race 8-bolt: Helix Race Carbon and other 8-bolt cranks (Helix rings need only 4 bolts; other brands' rings need all 8).
Helix Race GR: Helix Race GR cranks; required on 83mm GR cranks.
Helix Race 107 BCD: 4-bolt 107 BCD gravel and road cranks, e.g. SRAM XPLR and Quarq power meters.

Matching parts:

Cranks: Helix Race Alloy, Helix Race Carbon, Helix Race GR, Helix Core. Bolts: chainring bolts. Chainline spacers: crank spares.