ABSOLUTE BLACK Oval Winter 2x 110 BCD chainring

Absluteblack silver series line of shimano 110/5 bcd oval chainrings are designed for pre-2014 cranks like shimano dura-ace fc7900, ultegra fc6750, shimano 105 -5750 and many more with 5 bolt fitting. this is a simplified version of our premium line. same aluminium, teeth and shifting ramps, but less material machined out on the outer side for easy maintenance and cleaning. specifications: weight: - 150g compatibility: - shimano dura-ace 7900, 7950, ultegra 6750, shimano 105- 5700, tiagra 4650, fsa, rotor 3d & 3d+, s-works and many more cranks. also fits sram force and red but not compatible with sram cranks that have 1 hidden chainring bolt (force22, red22). compatible with di2 bolts: - for outer chainring please order long bolts - changing inner chainring to oval only? use original bolts material & finish: - cnc machined 7075 txxx aluminum. long-lasting construction. type ii anodizing ovality: - optimized to each size separately. 34t- 6.5% ; 36t- 11.4%, 50/52 - 10.3% ; timing of 108 -109.5° after tdc (top dead center) - ideal for road climbing. patent pending