ABSOLUTE BLACK Oval Road Chain Ring 2X 110/4 Shimano 9100/8000 (50T/52T/53T) – Rainbow Rainbow

Our Oval chainrings are designed to reduce strain on your knees by optimizing power delivery and minimizing dead spots in your pedal stroke. This results in smoother, more efficient pedalling, decreasing stress on your joints. Ideal for riders with knee concerns or those seeking a more comfortable, efficient ride. Whether you’re recovering from an injury or looking to enhance your performance, our Ovals provide the perfect solution.

absoluteBLACK Premium Shimano 110/4 bcd compatible oval chainrings in PVD Rainbow (oil slick) color are designed for new type of Shimano cranks Dura-Ace 9100, Ultegra 8000 & 105 R7000. Super fast shifting and amazing smoothness of pedaling. (They can be also retrofitted to 9000 and 6800 cranks). It is the most Premium oval chainring on the market with scientifically proven performance gains. 10/11/12spd compatible.

NOTE:Due to the nature of PVD process, every chainring is unique and color may vary. Not a single chainring is the same which makes your new ring completely individual. You can indicate to us, in comments section during the checkout, if you prefer more gold-purple or more blue/green-gold, but we can not guarantee to meet your request.

Advantages of absoluteBlack 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 pedaling
• 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%

Important:

• Ramps on big rings are specially configured for combinations: 50/34, 52/36, 52/38, 53/39T
• If you wish to use other configuration it will also work, but shifting will be slower and may require more “adjustments” of front drailleur to be acceptable. Also remember that front drailleur 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

How to mount 110/4 9100 / 8000 Oval Chainring: (Same instruction as for 9000/6800 Cranks)

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 oval 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 crank arm. If you are only switching the inner chainring to oval – use the original bolts that came with your crank. If you are switching to a pair of oval rings, you will need a set of regular double chainring bolts or our set of Bolt covers. Tighten all four bolts with force of about 5-7Nm. Mount your crank back to the bike. You may also need to adjust the front derailleur slightly.

Top Features:

• Colour Options: Black
• 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: CNC machined 7075 Txxx Aluminum. Long-lasting construction. Physical Vapour Deposition
• 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

Sizing Information

• Size – 34T, 36T
• Country of Origin – Poland

WORLD’S FINEST OVAL CHAINRINGS

British design at its best. absoluteBLACK is the largest manufacturer of oval chainrings in the World. We are devoted to extraordinary design, European manufacturing and production of parts that perform great & are made to last.

We believe anything out there can be made better, including chainrings. We made it our goal to improve riders pedaling efficiency by changing the way how torque from the crank is delivered to rear wheel. This is how absoluteBLACK oval chainrings found its way to general market and gained Worldwide recognition.

The companys foundation comes from our passion to cycling. absoluteBLACK is still a family-owned brand.

Our design office is based in London, England. All metal components are manufactured and dispatched from Poland (EU) using German aluminium, then skillfully anodized in the United Kingdom. Because of our attention to every detail, were proud to produce bicycle parts with an unbeatable combination of styling, performance, and precision.