WINTER OVAL ROAD 2X 110/5 BCD chainring

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$94.95
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Our Winter line of Shimano 110/5 bcd oval chainrings are designed for pre-2014 cranks like Shimano Dura-Ace FC7900, Ultegra FC6750, Shimano 105 -5750 and many more with 5 bolt fitting. This is a simplified version of our Premium line. Same aluminium, teeth and shifting ramps, but less material machined out on the outer side for easy maintenance and cleaning on winter training bikes. Weight is increased on these chainrings as compared to our Premium line for that reason. Ideal for your training bike.

Size (Mass +/-1g):

34T (39g), 36T (43g), 50T (150g), 52T (160g)

Color

GREY only

Compatibility

Shimano Dura-Ace 7900, 7950, Ultegra 6750, Shimano 105- 5700, Tiagra 4650, FSA, Rotor 3D & 3D+, S-works and many more cranks. Also fits Sram Force and Red but NOT compatible with Sram cranks that have 1 hidden chainring bolt (Force22, Red22). Compatible with Di2

BOLTS

For Outer chainring please order Long bolts

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- 11.4%, 50/52 - 10.3% ; Timing of 108 -109.5° after TDC (top dead center) - Ideal for road climbing. Patent Pending

 

To find more information about our oval chainrings please navigate to our Premium ring offer. Winter line chainrings are a simplified version of our state-of-the-art Premium line. They use same aluminium, teeth and shifting ramp design. However they are less machined out from the front for easy maintenance and cleaning when used on winter bikes. This chainring is designed for your winter/training bike where weight is not an issue, but easiness of cleaning is.

Advantages of Absolute Black Winter 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 AbsoluteBlack 6 point ramp and recess shifting design shifts better than any other brand and model of oval chainring
*30% heavier than our Premium chainirngs, but very easy to clean after winter training.
*You will not "feel" the oval shape while pedaling
*Your pedaling 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%

What size should I choose?

* 34T inner chainring should be used with 50T outer ring. It has 6.5% ovality. Use a 34T to help with spinning higher cadence and hilly terrain.

* 36T inner chainring can be used with 50 or 52T outer ring. It has 11.4% ovality. Use a 36T if you’re a strong rider or for rolling terrain.

* 50T outer chainring – Choose this size if you ride for pleasure or sportive events. This is the most versatile and comfortable size.

* 52T outer chainring - if you race and feel strong, it's the classic outer chainring size and a great option for experienced riders.

Remember when selecting your chainring sizes - it's not about what others use, but about ensuring YOUR ability to maintain a comfortable and effective cadence across the terrain you ride most often. If you ride chainrings that are too large (round or oval), your cadence will be lower. This can affect your performance by prematurely tiring your legs and possibly lead to stress injury in your knee joints.

How to mount Winter line 110/5 Oval chainring:

First, you need to remove crank from your bike. Once removed, unscrew the 5 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. AbsoluteBlack Outer chainring has a dimple mark - position the outer chainring to line up that dimple with 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 chainrings, you will need a set of regular ‘double’ chainring bolts (Long bolts in our offering). Tighten all five bolts with force of about 5-6Nm. Mount your crank back to the bike. You may also need to adjust the front derailleur upwards by 2-4mm.

absoluteblack oval chainring mounting instruction. How to mount oval chainring to Dura-ace 9000

Absolute Black always recommends using a new chain when fitting new chainrings.

All Absolute Black products are designed in UK and manufactured in Poland (EU) to the highest standards of quality.

Word on BIOPACE - Please understand Absolute Black’s oval design IS NOT ‘Biopace’ technology. Shimano created their non-round Biopace chainrings with a completely different orientation of the biggest radius of the oval. Their ring orientation has since been widely accepted as being fundamentally wrong. Instead of positioning it in power zone - which is slightly below the level of the crank - they clocked it to the dead zone where human physiology generates least power. The result was that in power zone pedalling was too easy and in dead zone too hard, causing knee pain and lumpy pedalling cadence. Exactly opposite to how it should be. The opposite of how it is with an Absolute Black oval chainring fitted to your bike.

 

Cranks visible on the photos are not included to the purchased chainrings.

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