Description

Utilising a dual-stage transmission, the overdrive system enables the rider to achieve maximum pedalling speed, effectively simulating the use of a single 75T chain-ring.

The cranks are made from high-strength Cr-Mo steel with a tensile strength of 1200 N/mm² and are available in two lengths: 120 mm and 170 mm. The 120 mm cranks are designed for improved cornering and optimised for higher cadence pedalling, while the 170 mm cranks deliver greater torque transfer to the rear wheel but offer reduced ground clearance.

The cranks feature interlocking teeth for secure connection, fastened with an M10 fine-thread bolt. The fine threading prevents loosening, eliminating the need for thread lock. Ensure proper tightening to 35 Nm for optimal performance.

Product features

• Chain rings: 30T (crank) – 12T – 30T (on overdrive chain ring) for use with Q80/Q155/Q76/Q140 frame kits with 100 mm BB shells;
• Bottom bracket: This system fits only 100 mm BB shell width;
• Crank Arm Length: 120 or 170 mm;
• Material of Crank arms: Cr-Mo steel;
• Colour: Black powder coat;
• Weight (includes BB bearing, cranks and all nuts and bolts): 1400 g (120 mm), 1570 g (170 mm).