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Absolute Black > Mountain chainrings > Oval narrow-wide > Absolute Black OVAL 104BCD Chainring N/W

Absolute Black OVAL 104BCD Chainring N/W

$99.99 CAD
Absolute Black
 

Absolute Black OVAL 104BCD Chainring N/W

Absolute Black OVAL 104BCD Chainring N/W

$99.99 CAD
Tooth Count
30T
32T
34T
36T
Colors
Quantity
30T Black
OV30BK
32T (integrated threads) Black
OV32BK
34T Black
OV34BK
36T Black
OV36BK
30T Green
OV30GN
32T (Integrated Threads) Green
OV32GN
34T Green
OV34GN
36T Green
OV36GN
30T Red
OV30RD
32T (Integrated Threads) Red
OV32RD
34T Red
OV34RD
36T Red
OV36RD
Options/Parts
Short, 4 bolts+ nuts
In stock
Short, 4 bolts+ nuts
BOLT4S
$25.99
Add to cart


Overview

Our Premium 1X 104 & 64bcd Oval traction chainrings are designed for any cranks that have 104bcd mounting interface. This is the most common mounting standard.

Advantages of our special 104 & 64bcd 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!
  • Superb quality and great look. 
  • You will ride faster using ovals. If you keep using a round ring then others will get quicker.
  • You will not "feel" the oval shape at all 
  • Reduces stress on knees
32T chainring has build-in 2mm spacers and threaded holes (M8x0.75) to accommodate this size on spider. Other sizes have regular 10mm holes.

The World's best oval (elliptical) narrow/wide 104bcd traction chainring - period. Non circular chainrings, Non-round chainrings.
Designed in UK. Manufactured in Poland (EU).
Not convinced yet? Read what other customers write in Reviews tab.

BikeJames about Oval chainring - review
PinkBike magazine Oval chainring - review
29inches magazine Oval chainring - review
OVAL rings - unfair advantage in singlespeed? MTBR forum reviews.
 
Specs
 
  • Size (Mass +/-1g): 64BCD: 26T (35g), 28T (42g), 104BCD: 32T (41g), 34T (44g), 36T (53g)
  • Color: Black, Racing Red, Cannondale Green
  • Compatibility: All cranks with 4x 104BCD interface. That means Shimano XT / Zee / Deore / SLX / XTR, Race Face, FSA, E13 etc
  • Material: cnc machined 7075 Txxx Aluminum. Long-lasting construction
  • Finish: type II anodizing
  • Mounting holes: 4 x 104mm BCD (for 32T ring, bolts should be min 6mm long)
  • Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3 after TDC (top dead center) Patent Pending
 

Frame clearance (biggest dimension of the oval tip to tip of tooth):

  • 26T: 118mm
  • 28T: 127mm
  • 32T: 143mm
  • 34T: 151mm
  • 36T: 159mm
 
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.

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.
 
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.

 
Installation
 

Don't know what bolts to use with 32T oval chainring with integrated threads?

They are standard bolts. You can use a granny ring bolts (from 64bcd chainring) or use the ones that connect middle and big ring from 3X crank. You can also buy them from us in Bolts tab. Pick "Long" ones. Other sizes like 34 and 36T use "short" bolts.

It is ideal for 1x 9/10/11 and Singlespeeds. Oval (elliptical) chainring does not compromise the work of clutch mechanism in rear derailleur. It also does not require chain tensioner when using in singlespeed application. Riding out of saddle on the uphill will become more pleasant. These chainrings also help you to recover after knee injuries as pedaling becomes smoother and less exhausting. It is the most advanced oval chainring currently on the market.

The most advanced, Patent Pending narrow/wide tooth profile ever produced, guarantee minimum 12 months of excellent chain retention capabilities! We mean it. Always use a new chain with a new chainring.

 

Chain options

  • 10 or 11spd chain for geared bike or 6-8 spd one for SS (1/8" also fits). If used in 1x9 drivetrain - 10spd chain must be used to obtain the performance. (yes - 10spd chain will work great on 9spd cassette)

Chainguide needed?

  • No. But if you want one then chain guide should have 2 teeth more capacity than nominal oval ring size.
 
FAQ
 
What size should I choose?
  • 26T (64BCD) Oval chainring has the ovality of 24/28T and is best for someone who uses currently 26T round ring.
  • 28T (64BCD) Oval chainring has the ovality of 26/30T and is best for someone who uses currently 27 or 28T round ring.
  • 32T oval ring will suit best someone who uses 30 or 32T chainring currently. While pedaling, you will feel quite similar effort to the one riding round 31T ring (as the smallest diameter of the oval is 30T), but you will gain the speed similar to riding 33/34T chainring.
  • 34T Oval chainring has the ovality of 32/36T and is best for someone who uses currently 33 or 34T round ring.
  • 36T Oval chainring has the ovality of 34/38T and is best for someone who uses currently 36 or 38T round ring.
 
 



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