Campagnolo EKAR GT Crankset - 170mm 13-Speed 40t 123mm BCD Campagnolo Ultra-Torque Spindle Interface Black. The Campagnolo EKAR GT crankset features two aluminum cranks that are fitted with Ultra-Torque semi-axles in AISI 630 steel in line with the clever material combinations of the entire EKAR GT groupset with a view to producing components that are always light but deliver maximum efficiency and durability. ProTech™ technology joins the two semi axles inside the bottom bracket with a single sturdy screw. The oversize stainless steel bearing race is on the crank fitted onto the semi axle for maximum smoothness and resistance – and to make it easy to access for inspection and maintenance without having to dismantle the cups.

2-piece aluminum crank arms with Ultra-Torque semi-axles in AISI 630 steel for strength and light weight

Semi-axles with Hirth ProTech™ technology are strong efficient and self-aligning

Lightweight resistant chainrings in premium 7075 aluminum are easily interchangeable: simply unscrew them off the four arms of the crank with no need to dismantle the crankset

Optimized tooth design for efficient transmission and maximum chain reliability

The four arms are arranged symmetrically for optimum load distribution and have a 104 mm bolt circle diameter

47.5mm Chainline

151mm Q-factor