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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.
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
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
Weight
Bosch: 189g
TQ: 192g
Shimano: 227g
Collapsible content
Helix Core e*spec Chainring
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