AbsoluteBLACK MTB Oval Chainring 104BCD

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OVAL 104BCD Chainring N/W -BLACK

Available Options:

26 T 64BCD

28T 64BCD

 

absoluteBLACK Premium 1X 104 & 64bcd Oval traction narrow wide chain rings are designed for any cranks that use 104bcd mounting interface. This is the most common mounting standard for Shimano and other 4 arm cranks.

Size (Mass +/-1g): 64BCD: 26T (35g), 28T (42g)

30T 104BCD: 36g – comes with special bolts and spacers

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 Sixc, RF Ride, RF Chester, RF Respond, FSA, E13 and many more. 9, 10, 11 and 12spd Eagle compatible.
Material cnc machined 7075 Txxx Aluminum. Long-lasting construction. Type II anodizing
Chainline 26&28T (64bcd) – 46mm ; 30T – 48mm ; 32T – 48.5mm ; 34&36T – 50mm
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

 

Important:

*32T chainring has build-in 2mm spacers and threaded holes (M8x0.75) to accommodate this size on spider. Other sizes have regular 10mm holes.

*30T chainring has build-in 2.5mm spacers and threaded holes (M8 / M5) to accommodate this size on spider. It also comes with bolts and spacers in the package: 2x M8 aluminium bolts T30 torx, 2x M5 steel bolts T25 torx and 2x eccentric spacers. This is a patent pending solution.

 

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):

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

 

Advantages of special 104 & 64bcd narrow wide 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
*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

 

How to mount 104bcd Absoluteblack oval narrow wide chainring:

There is a small mark (triangle shaped) on the inner circumference of the chainring.

This mark Must sit behind the crank arm.

In 28T oval there is a dimple instead of the triangle mark. That dimple must align with the crank arm and Must be visible to you when mounting the chainring (recesses on the mounting holes face the crank tabs)

How to mount 104BCD OVAL chainring to 104bcd crank from absoluteblack on Vimeo.

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 9/10/11/12spd and Singlespeeds. Oval (elliptical) narrow wide 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, 11 or 12spd chain for geared bike or 6-8 spd one for SS (1/8″ also fits). If used in 1×9 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.

 

 

 

 

 

Why choose Premium absoluteBLACK Oval chainrings

AbsoluteBLACK believe that using oval chainrings bring significant efficiency advantages to cyclists. Oval chainrings do not produce more power, they allow you to unleash your true potential. They achieve this by optimising the pedalling torque you generate, reducing your effort on the climbs and increasing your speed at the same time – so you can be faster and more efficient. Naturally, we’re obsessed with making the finest oval chainrings in the world. We do this by spending countless hours refining the design and detail of each product. Then we use the best possible materials and high-tech, state-of-the-art CNC milling machines to produce oval chainring perfection.

All AbsoluteBLACK chainrings are compatible with 10 and 11 speed drivetrains.

Our premium, Patent Pending Oval chainrings let you achieve higher average speed during the ride, reduce muscle fatigue, prevent cramps and reduce peak loads on your knees.

 

Six machined up-shift ramps on the backside of these rings help keep shifting relatively crisp and smooth.

http://www.vimeo.com/152897512

OPTIONS

26T 64BCD, 28T 64BCD, 30T (bolts and spacers included), 32T (integrated threads), 34T, 36T

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