ABSOLUTEBLACK Premium Oval Road 9100/8000 Chainring
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PREMIUM ROUND ROAD 2X FOR R9100 & ULTEGRA R8000 & 105 R7000
AbsoluteBLACK Premium Shimano 110/4 bcd compatible oval chainrings are designed for new type of Shimano cranks Dura-Ace 9100, Ultegra 8000 & 105 R7000 only. These are finest oval chainrings on the market in terms of shifting, smoothness of pedaling and manufacturing quality. (They can be also retrofitted to 9000 and 6800 cranks). 10/11/12spd compatible.
SPECIFICATIONS
| Size (Mass +/-1g) | 34T (31g), 36T (37g), 38T (41g), 39T (42g), 50T (120g), 52T (137g), 53T(139g) |
| Color | Black, Grey, Champagne (inner ring in black only) |
| Compatibility | Shimano Dura-Ace 9100, R9120, R9150 & R9170 Di2 and Ultegra 8000, R8020, R8050 & 8070 Di2, 105- R7000, R7020, R7070. They can also retrofit all 9000 and 6800 series cranks but use bolt covers for best appearance. 10 / 11 / 12spd compatible. |
| Bolts | For Outer chainring please order "Long bolts" from us OR Bolt Covers / 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, 38T, 39T- 11.4%, 50/52/53T - 10-11.2% ; Timing of 108 -110.5° after TDC (top dead center) - Ideal for road climbing. Patent Pending |
IMPORTANT
Ramps on big rings are specially configured for combinations: 50/34, 52/36, 52/38, 53/39T
34t Premium Series inner chainring is not compatible with power meters which use circular spider (SRAM Quarq, Power2Max, etc) . For those power meters please choose our Silver Series 34t inner oval.
If you wish to use other configuration it will also work, but shifting will be slower and may require more "adjustments" of front dérailleur to be acceptable. Also remember that front dérailleur can only accept max 16T difference between 2 chainrings - this is how Shimano and SRAM designed them.
Absolute Black always recommends using a new chain when fitting new chainrings.
ADVANTAGES OF ABSOLUTEBLACK ROAD OVAL CHAINRINGS:
One of a kind look
Super stiff design due to thicker, 5mm construction
Bespoke Absolute Black 4 / 6 point ramp and recess shifting design shifts as crisp as original
Finest design that provides excellent strength to weight ratio
HOW TO MOUNT 110/4 ABSOLUTEBLACK ROUND CHAINRINGS
First, you need to remove your crank from your bike. Once removed, unscrew the 4 bolts that hold two chainrings together with a T-30 torx key. Remove both original rings.
Locate the new inner chainring with the triangular timing indicator positioned behind crank arm. The bolt holes on the small chainring are recessed – so the nut heads will sit flush with the surface of the chainring - these recesses should face you when mounting the bolts.
Absolute Black outer chainring has a specific shape of mounting tabs so it will only fit one way on the new version of cranks arms (for older cranks locate the recess on the chainring behind the crank arm).
If you are only changing the inner chainring - use the original bolts that came with your crank. If you are replacing a pair of rings, you will need a set of regular ‘double’ chainring bolts or our set of Bolt covers (buy bolt covers that are right for your crank model).
Tighten all four bolts with force of about 5-7Nm. Mount your crank back to the bike. If you were changing outer ring size - you need to also adjust front dérailleur. (SEE VIDEO)
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