Absoluteblack oval road 110 4 chainring for shimano dura-ace r9100 ultegra r8000

Product Description The absoluteBLACK Oval Road 110/4 chainring for Shimano Dura-Ace R9100 and other 4-arm cranks This oval 2-speed chainring by absoluteBLACK was developed for the Shimano Dura-Ace R9100 and Ultegra R8000 road bike cranks, which have four asymmetrically arranged arms and a bolt circle diameter of 110 mm. It also fits the 105 R7000 crank. The chainring is designed for super-fast and smooth shifting. It is made of premium quality aluminium and is characterised by particular rigidity. Thanks to the oval shape, you optimise your pedalling movement, reduce the strain on your knees and move forward faster. Specifications:Application:RoadMount:110 mm bolt circle diameter, 4-arm asymmetricalTeeth:34 T, 36 T, 38 T, 39 T, 50 T, 52 T, 53 TGearing:2x10-speed, 2x11-speedType:Oval 6.5% (34 T), 11.4% (36/38/39 T), 10 - 11.2% (50/52/53 T)Technical Information:Combinations:34-50 T, 36-52 T, 38-52 T, 39-53 TMaterial:aluminium (7075)Compatibility:Crank:Shimano Dura-Ace R9100 (also R9120, R9150, R9170 groupsets), Ultegra R8000 (also R8020, R8050, R8070 groupsets), 105 R7000 (also R7020, R7070 groupsets), also fits Dura-Ace 9000 and Ultegra 6800Chain:10-speed or 11-speedNote from the manufacturer:Combinations other than those listed above are also possible, but these slow down the shifting process and require further adjustments to the front derailleur. Please note the maximum permissible difference of 16 teeth. The 34 T chainring is not compatible with power meters that have a circular spider (e.g. SRAM QUARQ, Power2Max). Use long bolts or bolt covers for the outer chainring. If you are only replacing the inner chainring, continue to use the original bolts. Features:oval shape for improved traction and performance uphillfaster, looser riding with a natural pedalling motion with reduced strain on the kneesovality and timing (108 - 110.5°) matched to chainring size (TDC technology, Top Dead Center)15% less shifting operations needed5 mm thick and 15% stiffer than comparable chainrings6 shift ramps, 12 downshifting points and design with cutouts for fast, smooth shiftingexcellent weight to stiffness ratiodurable construction, CNC-machinedanodisedpremium quality" rainbow" version with unique rainbow finish from PVD coating process: each piece is unique due to individual colour gradationdesigned in Great Britain, manufactured in PolandTechnology:Oval Chainrings Oval chainrings follow the natural physiology of humans. They maximise pedalling power the moment it is developed and minimise resistance when it is not. As a result, oval chainrings allow the rider to pedal more smoothly and stay loose on the climb. In fact, your pedal stroke will feel " rounder" with an oval chainring than with a round chainring. Compared to round chainrings, oval chainrings address more muscle groups - but each of them to a lesser degree. The total load of pedalling is therefore distributed over a larger muscle mass and the knees are less strained. This has three advantages: 1. The legs remain fresher and more relaxed. 2. You can go uphill faster. 3. Spreading the load over more muscles reduces the susceptibility to cramps, even with great effort. Ultimately this will increase your riding pleasure. For MTB applications, the rear wheel traction is increased on loose and slippery surfaces, allowing you to make better progress on demanding terrain. Manufacturer Numbers:black 34 tooth:ROV9100/34/4BKblack 36 tooth:ROV9100/36/4BKblack 38 tooth:ROV9100/38/4BKblack 39 tooth:ROV9100/39/4BKblack 50 tooth:ROV9100/50/4BKblack 52 tooth:ROV9100/52/4BKblack 53 tooth:ROV9100/53/4BKgrey 50 tooth:ROV9100/50/4GRgrey 52 tooth:ROV9100/52/4GRgrey 53 tooth:ROV9100/53/4GRrainbow 34 teeth:ROV91/34/4RBrainbow 36 teeth:ROV91/36/4RBrainbow 39 teeth:ROV91/39/4RBrainbow 50 teeth:ROV91/50/4RBrainbow 52 teeth:ROV91/52/4RBrainbow 53 teeth:ROV91/53/4RBContents:1 x absoluteBLACK Road 110/4 BCD Shimano Dura-Ace R9100 Oval chainringOrder Together:Chainring Bolt Covers for Dura-Ace R9100 orChainring Bolt Covers for Ultegra R8000 orChainring Bolt Set for 4-arm Weight: black | 34 : 31 g black | 36 : 37 g black | 38 : 41 g black | 39 : 42 g black | 50 : 120 g black | 52 : 137 g black | 53 : 139 g Manufacturer: absoluteBLACK Ltd. Unit 6 88 Peterborough Rd. London SW6 3HH United Kingdom info@absoluteblack.cc Distributor: bc GmbH Carlo-Schmid-Straße 12 52146 Würselen Germany info@bike-components.de