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Absolute Black > Gravel & CX chainrings > Oval narrow-wide > Absolute Black OVAL CX 110/4 BCD

Absolute Black OVAL CX 110/4 BCD

$104.99 CAD
Absolute Black
 

Absolute Black OVAL CX 110/4 BCD

Item#PriceStock
38T red
#: CXOV38/110/4RD
Price: $104.99
Stock: In stock
CXOV38/110/4RD$104.99In stock
40T black
#: CXOV40/110/4BK
Price: $104.99
Stock: In stock
CXOV40/110/4BK$104.99In stock
40T red
#: CXOV40/110/4RD
Price: $104.99
Stock: In stock
CXOV40/110/4RD$104.99In stock
42T black
#: CXOV42/110/4BK
Price: $104.99
Stock: In stock
CXOV42/110/4BK$104.99In stock
42T red
#: CXOV42/110/4RD
Price: $104.99
Stock: In stock
CXOV42/110/4RD$104.99In stock

Options/Parts

Short, 4 bolts+ nuts
#: BOLT4S
Price: $25.99
Stock: Out of stock
BOLT4S$25.99Out of stock


Overview
 
Our Premium Cyclocross 110/4(bolt pattern) oval chainrings are designed for new Shimano cranks like Dura-Ace 9000, Ultegra 6800, Shimano 5800 and others. Ideal for 1X conversion of your road crank. Narrow-wide chainring.
 
Advantages of our special CX Oval chainrings:
  • Finest design to provide excellent weight to strength ratio
  • One of a kind special oval shape (Patent Pending)
  • Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! 
  • Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically 
  • Designed to handle mud and grass with easy
  • Superb quality and great look.
  • You will ride faster using ovals. If you keep using round ring then others will get quicker. 
  • Reduces stress on knees and helps to maintain your legs fresher for longer
  • You will not "feel" the oval shape at all
The most advanced, Patent Pending narrow/wide tooth profile currently produced, guarantee minimum 12 months of excellent chain retention capabilities! We mean it. Always use a new chain with a new chainring.
Not convinced yet? Read what other customers write.
Specs
 
  • Size (Mass +/-1g): 38T (65g), 40T (65g), 42T (71g)
  • Color: Black, Racing Red
  • Compatibility: Shimano Dura-Ace 9000, Ultegra 6800, Shimano 105 5800, Tiagra 4700 and similar
  • Material: cnc machined 7075 Txxx Aluminum. Long-lasting construction
  • Finish: type II anodizing
  • Ovality: 38T- 11.4% ; Timing of 110.5° after TDC (top dead center) - Patent Pending
Designed in United Kingdom, manufactured in Poland using German materials. Truly European products.
 
Why Oval

Why our oval chainrings work
Our traction Oval chainrings work because a rider does not produce power evenly through a pedal stroke; they maximize the part of the stroke where power is produced and minimize resistance where it isn't. Oval rings make the spin cycle a lot smoother and are easier on legs while climbing. Believe it (or not), but a round chainring doesn't transfer torque to your rear wheel as smoothly as an Oval one. You will actually feel your stroke to be more "round" with an Oval shape than with a round chainring.

Why it matters
Traction, Traction and Traction. With oval rings rear tire traction improves greatly on loose and slippery terrain. Smoother power delivery to your rear wheel means that you will be able to maintain better, constant cadence; get less stress on the joints (knees) and therefore be able to keep certain level of effort for longer. This results in higher average speed. Moreover, 11 studies made by various Universities in the World show that using oval chainrings human legs utilize more muscle groups (compared to round one), but each of them to lesser degree. Load from pedaling an oval chainring is spread over greater muscle mass which in effect gives you the feeling of fresher and more relaxed legs. It is world's finest oval chainring backed by tens of thousands of customers.
Technology
 
Word on BIOPACE
Please understand that this is not Biopace technology. Shimano created Biopace with the completely wrong orientation of the biggest radius of the oval. 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 generates least power. The result was that in power zone pedaling was too easy and in dead zone very difficult. Exactly opposite to how it should be.

Round rings do not optimize the way humans produce power

Other elliptical chainrings
Clocking (timing) and shape of the oval are the most crucial parts of the design. Ride quality of Absoluteblack Oval ring will be different to ovals from brand X or Y. 2 years of development of our ovals resulted in commercially most successful product of its kind. AbsoluteBlack is the First company who managed to successfully popularize ovals in mountainbike sport. Please note: Other manufacturers offer one timing and ovality setting for all chainring sizes, but pedaling behavior changes with each size considerably. To optimize for this, every chainring size needs to be a bit different. For example the smaller the chainring size the bigger the ovality has to be to help climb steeper hills more effectively. This is where we specialize in and optimize every size to particular pedaling style. This is also why we do not provide information about timing and exact ovality of the chainring as each one is different.

 

Shifting quality and technology
Both, inner and outer oval chainrings are optimized with smooth shifting in mind. This is why the back of the Absolute Black Oval road chainring does not feature cutouts, like other oval products on the market. Instead, we design smooth angled surfaces, to help chain to slide quickly and precisely between chainrings. Absolute Black outer oval chainrings have 6 up-shifting ramps, for easy and quick gear change, even under load. Each outer chainring also features 12 down-shifting points. Instead of steel shifting pins we use a CNC machined "ramp and recess" solution. Special raised ramps work in conjunction with the tooth recesses to stabilize the chain when shifting. Our oval chainrings DO NOT require any modification to the front dérailleur in order to work properly (apart from small standard adjustment)

How Absolute Black Oval Rings Shift
 
The importance of timing and shape with oval chainrings
The oval chainring movement across all cycling disciplines is growing rapidly, led by absoluteBLACK, the world leaders in this important product category.

However, not all oval chainrings share the same performance characteristics as absoluteBLACK. The 'clocking' (timing) and shape of the oval are the most crucial parts of any oval chainring design, absoluteBLACK spent three years in design development and have perfected both timing and shape design elements - ensuring the ride quality of absoluteBLACK oval ring will be different and superior to ovals from other brands (as many abosluteBLACK customers already realised).

Where most other brands retain the same timing (position of the crank arm relative to the oval) and shape of the oval across all their sizes - because it's cheaper and less time consuming. absoluteBLACK believe that each different size ring requires a bespoke, optimised, perfect pedalling solution. So that is what we do - for every chainring absoluteBLACK make. For example, the smaller the chainring size, the bigger the ovality has to be to help climb steeper hills more effectively. We keep our exact Patent Pending data a secret, to ensure we get the best possible absoluteBLACK advantage over other brands, and you get the best possible ride experience.
 
Installation
 
How to mount 110/4 Oval chainring:
First you need to remove crank from the bike. Once removed, unscrew 4 bolts that hold two rings together with T-30 torx key. Take off both original rings. Position Absoluteblack oval chainring in place where the small chainring was (inside position). Please note that small indicator on the chainring Must sit behind crank arm - same way as original chainring indicates its position. You will need new SHORT bolts to mount your new ring (available on our website or you can look for "single" bolts in local bike shop). Close back those four bolts with force of about 5-7Nm. Mount your crank back to the bike. Done
 
Absolute Black always recommends using a new chain when fitting new chainrings.
 
FAQ
 
​What size should I choose?

* 38T Oval ring will suit best someone who uses 37 or 38T round chainring currently. While pedaling, you will feel similar effort to the one riding round 37T ring, but you will gain the speed similar to riding 40T chainring.
* 40T Oval chainring has an ovality of 38/42T and is best for someone who uses currently 39 or 40T round ring.
* 42T Oval chainring has an ovality of 40/44T and is best for someone who uses currently 41 or 42T round ring.
* Do I have a perfect pedal spin?
This is an important one. Professionals and semi pro cyclists spin perfect "circles". The rest of us often struggle with our pedalling action, simply because we don't spend every day of every week on the bike, to master this skill. Switching to oval rings effectively correct an imperfect pedalling action – delivering the smooth power delivery the pros developed through thousands of hours of training. One of the key reasons the benefits of oval chainrings have historically proven hard to prove in lab tests, is because they were nearly always done using Professional riders – as a user group they are the least likely to gain a performance increase from a switch to oval, as their pedalling is already close to perfection. Where ovals shine however is with rest of us, who ride for pleasure and not for a job. Simply 99% of road cyclists will benefit from having oval chainrings on their bikes.
 
 
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