e*thirteen's lightest direct mount chainring, machined from 7075-T6 aluminium with bold anodised colour options to match the rest of the Helix range.

Highlights

  • 7075-T6 aluminium
  • Flip-flop ring: 52mm (Boost) or 55mm (Super Boost) chainline
  • M4 narrow-wide tooth profile for chain retention
  • QuickConnect direct mount
  • Several colours and tooth counts

Compatibility & fit

Fits e*thirteen Helix R Direct Mount, Helix, TRS, LG1 and XCX direct mount cranks (some applications need spacers), and runs on both Shimano and SRAM chains. Flip the ring to switch between a 52mm Boost and 55mm Super Boost chainline on the same crank. The Tune workshop can fit it as part of a drivetrain service.

Options

ColourTeethWeight
Bronze28T48g
Bronze30T50g
Bronze32T52g
Bronze34T54g
Black28T48g
Black30T50g
Black32T52g
Black34T54g
Silver30T50g
Silver32T52g
e*thirteen's standard warranty covers this product for 10 years against manufacturing and material defects; normal wear, crash damage and misuse aren't covered, though e*thirteen's Infinite Ride programme offers a discounted replacement after a crash. For warranty support, return the product to Tune Cycles and we'll manage the claim with e*thirteen's Australian distributor. This is in addition to your rights under the Australian Consumer Law, so keep your proof of purchase.
  • 7075-T6 aluminium
  • Flip-flop 52mm/55mm chainline
  • M4 narrow-wide tooth profile
  • QuickConnect direct mount
  • Bronze, Black or Silver; 28T–34T
Brande*thirteen
ModelHelix R Direct Mount
Material7075-T6 aluminium
ChainlineFlip-flop 52mm (Boost) / 55mm (Super Boost)
MountQuickConnect direct mount
CompatibilityHelix R Direct Mount, Helix, TRS, LG1, XCX direct mount cranks
Colour optionsBronze / Black / Silver
Teeth options28T / 30T / 32T / 34T (by colour, see Options)
SKU DTW-ETG-CR4HRA-1-PAR
Brand e*Thirteen