shimano OVAL XTR M9000 traction chainring

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$66.00
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In Stock !

 

Our Premium 1X Oval 96BCD traction chainring is designed for Shimano XTR M9000 and M9020 cranks Only. They feature exactly same oval shape as rest of our oval chainring portfolio. They are not compatible with XT M8000 cranks.

Size (Mass +/-1g):

30T (44g), 32T (53g), 34T (63g)

Color

Black only

Compatibility?

Fits only Shimano XTR M9000 and M9020 cranksets. 9, 10, 11 and 12spd Eagle compatible.

Material

cnc machined 7075 Txxx Aluminum. Long-lasting construction! Type II anodizing

Chainline

Perfect 49mm

Mounting holes

4 x 96mm BCD Asymmetrical design. Original M7 bolts only

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

All 3 sizes have built-in M7 threaded standoffs to provide the ideal 1X chainline. They improve stock Shimano chainline by 1mm.You can only use Original Shimano M7 bolts with these chainrings(they come with crank).

Advantages of our special Shimano XTR M9000 oval chainrings:

*We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape.
*Finest design to provide excellent weight to strength ratio
*One of a kind special oval shape (Patent Pending)
*Greatly improves traction and climbing abilities
*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
*All rings have built in threads for easy of mounting and reduction in weight
*Superb quality and great look.
*You will ride faster using ovals. If you keep using round ring then others will get quicker.
*You will not "feel" the oval shape at all
*Reduces stress on knees

What size should I choose?

* 30T Oval chainring has an ovality of 28/32T and is best for someone who uses currently 28 or 30T round ring.

* 32T oval ring will suit best someone who uses 31 or 32T chainring currently. While pedaling, you will feel quite similar effort to the one riding round 31T ring ( the smallest diameter of the oval is 30T), but you will gain the speed similar to riding 33/34T chainring.

* 34T Oval chainring has an ovality of 32/36T and is best for someone who uses currently 33 or 34T round ring.

How to mount Absoluteblack oval chainring:

There is a small mark (triangle shaped) on the inner circumference of the chainring. This mark Must sit behind the crank arm.

absoluteblack oval chainring XTR M9000 mounting instruction. How to mount oval chainring to XTR M9000

It is ideal for 1x 10/11 and Singlespeeds. Oval (elliptical) chainring does not compromise the work of clutch mechanism in rear derailleur(video at the bottom). It also does not require chain tensioner when using in singlespeed application. Riding out of saddle on the uphill will become more pleasant.

Ovality of the chainring is in range of 10-14% (dependent on size) and feels perfectly round when riding. 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, 11 or 12spd chain for geared bike or 6-9 spd one for SS (1/8" also fits). 

Chainguide needed?

No. But if you want one then chain guide should have 2 teeth more capacity than nominal oval ring size.

MSRP: £45,99 only ......

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Designed in UK. Manufactured in Poland (EU). The World's best Shimano oval chainring.

If you wish to check for frame clearance with new oval ring, below you can find measurement of biggest dimension of the oval (tip to tip of tooth):

30T: 134mm ; 32T: 143mm ; 34T: 151mm 

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.

Other elliptical chainrings on the market


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.

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 slightly 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 exact figures about timing and ovality of the chainring as each one is special and we need to protect our Patent Pending solutions. Due to our Global popularity and success there are now more companies releasing "similar" products. But "similar" is not the same. Even very small change in parameters of the oval shape and timing gives entire different feeling and performance. We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape.

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