Absolute Black Oval Road Chainring 2X 110/4 Shimano 9100/8000 (50T/52T/53T)-PVD Rainbow

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 spd 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 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

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.

Key Features

• Compatibility: Shimano Dura-Ace 9100, Ultegra 8000, 105 R7000 (also compatible with 9000 and 6800)

• BCD: 110/4 bolt circle diameter

• Chainring Type: Oval road chainring (2x setup)

• Available Sizes: 50T, 52T, 53T

• Speed Compatibility: 10 and 11 speed drivetrains

• Construction Thickness: 5mm for increased stiffness

• Finish: PVD Rainbow oil slick coating

• Pedaling Efficiency: Reduces dead spots for smoother power delivery

• Shifting Design: Absolute Black 6-point ramp and recess system

• Durability: High strength-to-weight ratio aluminum construction

Product Specifications

• Brand: Absolute Black

• Product Type: Road bike oval chainring

• BCD Standard: 110/4

• Compatible Cranks: Shimano Dura-Ace 9100, Ultegra 8000, 105 R7000, also 9000 and 6800

• Tooth Options: 50T, 52T, 53T

• Recommended Pairing: 50/34, 52/36, 52/38, 53/39 combinations

• Speed Compatibility: 10/11 speed

• Material: CNC machined aluminum

• Thickness: 5mm

• Finish Type: PVD Rainbow (Oil Slick)

• Mounting Torque: 5–7 Nm

Performance Engineering

The Absolute Black oval design is engineered to improve cycling efficiency and comfort. Its patented oval shape helps riders generate more power during the strongest part of the pedal stroke while reducing resistance in weaker phases. This results in smoother cadence, especially during steep climbs or high-intensity efforts.

• Climbing Advantage: Oval shape helps riders climb faster and more efficiently

• Stiff Construction: Over 15% stiffer than many competing oval chainrings

• Smooth Pedaling: Minimizes dead spots in the pedal stroke

• Cadence Stability: Helps maintain consistent cadence during climbs

• Reduced Fatigue: Helps keep legs fresher for longer rides

• Knee Comfort: Reduces stress on knee joints during pedaling

• Cramp Prevention: Helps reduce the possibility of leg cramps

Easy Operation / Usage

Installing the chainring is straightforward with standard tools and proper alignment.

• Step 1: Remove the crankset from the bike

• Step 2: Unscrew the four chainring bolts using a T-30 Torx key

• Step 3: Remove the existing chainrings

• Step 4: Position the inner oval chainring with the triangular timing indicator behind the crank arm

• Step 5: Ensure recessed bolt holes face outward for proper bolt seating

• Step 6: Install the outer chainring in its correct orientation

• Step 7: Tighten bolts to 5–7 Nm torque

• Step 8: Reinstall crankset and adjust front derailleur if necessary

Note: Using a new chain is recommended when installing new chainrings.

Why Choose This Product

• Premium oval chainring with scientifically proven performance gains

• Unique PVD Rainbow finish ensures every chainring is visually different

• Improves climbing efficiency and pedaling smoothness

• Advanced ramp design provides faster and smoother shifting

• High stiffness construction for improved power transfer

• Compatible with modern Shimano road cranksets

• Reduces unnecessary chainring shifts by up to 15%

In the Box

• Absolute Black Oval Road Chainring 2X 110/4 PVD Rainbow