Absolute Black Oval Road Chainring 2X 110/4 Shimano 9100/8000 (34T/36T/38T/39T)-Black

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 DA9000, Ultegra 6800, 105 5800 and Tiagra 4700  cranks). 10/11 spd compatible.

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 R9100, Ultegra R8000, and 105 R7000 cranksets

• Retrofit Compatibility: Works with Dura-Ace 9000, Ultegra 6800, 105 5800, and Tiagra 4700

• BCD Standard: 110mm 4-bolt Shimano asymmetric pattern

• Chainring Sizes: 34T, 36T, 38T, and 39T options available

• Oval Design: Special oval shape helps improve climbing efficiency and pedaling smoothness

• Stiffness: Over 15% stiffer compared to many other oval chainrings due to 5mm thick construction

• Shifting Technology: Absolute Black 6-point ramp and recess design for smooth and reliable shifting

• Pedaling Feel: Designed so the oval shape feels natural and unnoticeable while riding

• Cadence Efficiency: Helps maintain a more consistent cadence during climbs

• Rider Comfort: Reduces knee stress and helps keep legs fresher for longer rides

• Drivetrain Efficiency: Reduces frequent chainring and cassette shifts by up to 15%

Product Specifications

• Product Type: Oval Road Inner Chainring

• Brand: Absolute Black

• BCD: 110mm 4-bolt Shimano asymmetric

• Speed Compatibility: 10 / 11 Speed drivetrains

• Material: CNC machined premium aluminum

• Construction Thickness: 5mm

• Color: Black

• Chainring Options: 34T / 36T / 38T / 39T

• Designed For: Shimano 9100 / 8000 / R7000 cranksets

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

Performance Advantages

The Absolute Black Oval Road Chainring is engineered to enhance pedaling biomechanics and drivetrain efficiency for road cyclists.

• Optimized Power Phase: Oval profile maximizes power during the strongest part of your pedal stroke

• Improved Climbing Ability: Helps riders climb hills faster with better torque delivery

• Smooth Pedaling Dynamics: Reduces dead spots in the pedal rotation for a fluid pedal stroke

• Reduced Muscle Fatigue: More efficient power transfer helps keep legs fresher during long rides

• Lower Risk of Leg Cramps: Consistent pedaling motion reduces strain on muscles

• Better Cadence Control: Supports smoother cadence transitions when riding uphill

Easy Operation / Usage

• Remove the crankset from the bike before installation

• Unscrew the existing chainrings using a T-30 Torx key

• Position the oval inner chainring so the triangular timing indicator sits behind the crank arm

• Ensure recessed bolt holes face outward when mounting bolts

• The outer chainring fits only one orientation due to the shaped mounting tabs

• Tighten the bolts to 5–7 Nm torque for proper installation

• Reinstall the crankset and adjust the front derailleur if required

• Using a new chain is recommended when installing new chainrings

Why Choose This Product

• Premium oval chainring engineered for Shimano road cranksets

• Advanced shifting ramps provide smooth gear changes

• Strong 5mm construction offers excellent stiffness and durability

• Helps improve climbing efficiency and pedaling performance

• Reduces knee strain and muscle fatigue during long rides

• High precision CNC manufacturing ensures perfect drivetrain compatibility

• Trusted upgrade for performance-focused road cyclists

In the Box

• Absolute Black Oval Road Chainring 2X 110/4 (selected size)