Full seamless Japanese 4130 CrMo tubing with liquid post heat-treatment ensures the crank arms are as strong as possible

FRAME MATERIAL: 1020 Hi-Ten Steel

Tapered legs

Kink restrain brake lever & Kink linear Brake cable

most responsive and best performing Fly bikes brake to date

BSD Substance Cranks supplier_54521883263302 Full seamless Japanese 4130 CrMoBSD's Substance Cranks utilise a 2. 5 piece design for ease, securing the whole crank set with just one bolt. The arms are made from heat treated 4130 Chromoly with a rectangle cross section for extra stiffness and a beefy pedal boss for increased strength with an angled back for frame clearance. The heat treated spindle features a 22mm diameter and 48 splines. The BSD Substance Cranks are both RHD and LHD compatible and now come with a free