The chainrings of Absolute Black are CNC machined from billet aluminum, creating the perfect combination of light weight and excellent durability for your bike. The oval shape smooths force peaks during the turn of the handle. Thereby you have, especially in the mountains, a smoother passage and the muscles tired less. The lower peak forces also reduce the burden on the knee.
intended use : 2 double road
Material: Aluminium 7075
bolt circle diameter : 110 mm Shimano asymmetrically
Mounting: 4-arm spider
Number of teeth: 50 or 52
Compatibility cranks : Shimano Dura-Ace 9000, Ultegra 6800 Shimano 105-5800, Tiagra 4700 and much more.
Compatibility chain: 9-fold, 10-speed or 11-speed
Ovalization: 10.3%; maximum diameter at 108 to 109.5 ° crank position after top dead center
50 teeth - 120g
52 teeth - 137g
Delivery: 1x chainring