Weight reduction features are designed into the mold to stay true to the strength and weight optimization with less CNC time and cost.
e*thirteen Helix Crankset - 175mm, 73mm, 24mm Spindle with e*thirteen P3 Connect Interface, Black Lighter weight for improved acceleration and climbing Strong enough to shuttle run bike parks Durable 6066-T6 aluminum alloy for years of trust and confidence Compatible with 68/73mm frame bottom brackets Can be combined with either Shimano or SRAM drivetrains Includes: Crankset, BB/lockring tool, lockring, APS adjuster, User Manual, and sticker e*thirteen Helix Crankset - 175mm, 73mm, 24mm Spindle with e*thirteen P3 Connect Interface, Black Number of Chainrings: No Rings, No Spider Included keyword search: Helix Color: Black Pedal Spindle: 9/16" Crank Intended Use: Mountain Chainline/Hub Compatibility: 135/142 MTB Hubs , 141/148 Boost Hubs , 157 Super Boost Hubs Spindle Interface Type: e*Thirteen P3 Connect Defined Color: Black Chainring BCD: Direct Mount e*Thirteen BB Included: No e*thirteen Helix Crankset - 170mm, 73mm, 24mm Spindle with e*thirteen P3 Connect Interface, Black Number of Chainrings: No Rings, No Spider Included keyword search: Helix Color: Black Pedal Spindle: 9/16" Crank Intended Use: Mountain Chainline/Hub Compatibility: 135/142 MTB Hubs , 141/148 Boost Hubs , 157 Super Boost Hubs Spindle Interface Type: e*Thirteen P3 Connect Defined Color: Black Chainring BCD: Direct Mount e*Thirteen BB Included: No.The e*thirteen Helix crank combines the 6066-T6 aluminum alloy arms with a smaller 24mm heat treated chromoly spindle to do so.