e*thirteen's 8-bolt direct-mount chainring upgrades any 8-bolt drivetrain — forged from 7075 aluminium for a stiff, durable ring at a real weight saving over the alternatives.

Highlights

  • 8-bolt direct mount, 3mm offset for a 55mm Boost chainline on Helix Race Carbon cranks
  • M4 narrow-wide tooth profile for chain retention and cross-compatibility with Shimano, SRAM and TRP 11/12-speed drivetrains, including T-Type
  • Unique 4-bolt locking interface cuts weight and eases fitting/servicing
  • Forged-CNC 7075-T6 aluminium
  • Sterling Silver, 32T or 34T

Compatibility & fit

8-bolt direct mount for 8-bolt cranks and e*thirteen's Helix Race Carbon crank. 3mm offset gives a 55mm (Boost) chainline. Cross-compatible with Shimano, SRAM and TRP 11/12-speed drivetrains, including SRAM T-Type.

Options

TeethWeight
32T49g
34T54g
e*thirteen covers this product for 10 years against manufacturing and material defects from the date of purchase; crash, impact or misuse damage qualifies for a discounted replacement under e*thirteen's Infinite Ride crash-replacement programme. This is in addition to your rights under the Australian Consumer Law, so keep your proof of purchase. For warranty support, return the product to Tune Cycles and we'll manage the claim with e*thirteen's Australian distributor.
  • 8-bolt direct mount, 3mm offset (55mm Boost chainline)
  • M4 narrow-wide profile, Shimano/SRAM/TRP cross-compatible
  • Forged 7075-T6 aluminium
  • Sterling Silver, 32T or 34T
Bolt pattern8-bolt direct mount
Offset3mm (55mm Boost chainline)
Material7075-T6 aluminium
Tooth profileM4 narrow-wide
DrivetrainShimano/SRAM/TRP 11/12-speed, incl. T-Type
ColourSterling Silver
Teeth32T, 34T (see Options)
SKU DTW-ETG-CR5HAA-10-PAR3
Brand e*Thirteen