e*thirteen Helix Race e*spec Chainring

Helix R e*spec Chainring for Bosch CX/SX - 32T, 13mm Offset, Black

Helix R e*spec Chainrings merge cutting-edge design and performance. Designed as an upgrade for most popular ebike motor systems, they're available for Bosch CX Gen4/Gen5, Bosch SX, TQ HPR50, Fazua Ride 60, Shimano EP8, DJI Avinox, as well as Specialized SL1.1 and 2.1/2.2 motors. The 1-piece direct mount chainring, forged and machined from 7075 AL, boasts lightweight durability, impressive stiffness, and a standout technical aesthetic. Bosch rings come in two offset options; 13mm for 53mm chainline on CX Gen4/SX and 55mm chainline on CX Gen5 bikes, or 15mm offset for 55mm chainline on CX Gen4/SX, and 57mm chainline on CX Gen5.

Upgrade chainrings for Bosch CX/SX, TQ HPR50, Fazua Ride 60, Shimano EP8, DJI Avinox, and Specialized SL1.1 and 2.1/2.2 motors

New M4 narrow-wide profile delivers enhanced chain retention and cross compatibility with Shimano, Sram, and TRP 11/12s drivetrains, incl. T-Type

Forged-CNC 7075 AL for ultralight weight, with high strength, stiffness, and wear-life