Helix Core e*spec Direct Mount Chainrings feature our narrow-wide tooth profile, for reliable chain retention and an extra long wear life. Helix Core e*spec rings are cold-formed from steel and then heat-treated to provide excellent durability and toughness, all at a price that's easy on your wallet.

Features
Long-lasting and economical steel construction.
M4 narrow-wide tooth profile for excellent chain retention and Shimano®/SRAM® drivetrain compatibility.
Compatible with SRAM® T-Type® chains.

Specifications
Chainline: Bosch®: 53/55mm options with included spacer; TQ®: 55mm; Shimano®: 55mm
Color: Black
Compatibility: Bosch® SX / Gen4 CX, TQ® HPR50, Shimano EP8®
Material: 4040 Steel
Size: Bosch®: 34T, 36T; TQ®: 32T; Shimano®: 32T

Mfr Claimed Weight
Bosch®: 189g
TQ®: 94g
Shimano®: 113g