absoluteBLACK Premium Oval Road 110BCD 5B 34t 2x Chainring Black

. Size (Mass +/-1g): 34T (30g), 36T (36g), 38T (41g), 50T (122g), 52T (135g) (53T coming soon) . Colour: Black, Racing Red, Grey (inner ring black only) . Compatibility: Shimano Dura-Ace 7950, Ultegra 6750, Shimano 105- 5750, Tiagra 4650, FSA, Rotor 3D & 3D+, S-works and many more older 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 Aluminium. Long-lasting construction, type II anodizing . Ovality: Optimized to each size separately. 34T- 6.5% ; 36T- 11.4%, 38T- 11.4%, 50/52 - 10.3% ; Timing of 108 -109.5 after TDC (top dead centre) - Ideal for road climbing. Patent Pending IMPORTANT: If you currently use 53/39T chainrings you have 130BCD cranks (not 110bcd). In this case please look at absoluteBLACK 130BCD chainrings as you will not be able to use anything smaller than 53/39T. ADVANTAGES OF ABSOLUTE BLACK ROAD OVAL CHAINRINGS: . One of a kind special oval shape that helps you climb easier and faster (Patent Pending) . Over 15% stiffer than Rotor Qrings due to thicker, 5mm construction . Bespoke Absolute Black 6 point ramp and recess shifting design shifts better than any other brand and model of oval chainring . Finest design that provides excellent strength to weight ratio . You will not "feel" the oval shape while pedalling . Your pedalling action will feel smoother . Helps reduce stress on knees and helping your legs remain fresher for longer . You will be able to maintain better cadence while climbing . Reduces possibility of leg cramps . You will reduce chainring/cog shifts by at least 15%