AB OVAL 104 & 64BCD N/W CHAINRING

Absolute Black Premium 1X 104 & 64 bcd oval traction chainrings are designed for any cranks that use 104bcd mounting interface. This is the most common mounting standard for Shimano and other 4 arm cranks.

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35,51 €

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39,45 €

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The sizes 28-32T are not compatible with the Oval Guide. The spider would collide with the chain guide.

FEATURES:

  • 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 alternate wide and narrow 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
  • They save weight because they don't need the spider and chainring bolts.
  • The ability of installation of a smaller ring sizes that can't be mounted on regular spider.
  • 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 
  • We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape.

SPECS:

Size (Weight):

26T (35g) (64BCD)

28T (42g) (64BCD)

30T (36g) (104BCD) comes with special bolts and spacers

32T (41g), 34T (44g), 36T (53g) (104BCD)

Compatibility: All cranks with 4x 104BCD interface. That means Shimano XT / Zee / Deore / SLX / XTR, Race Face, FSA, E13 and many more. 9, 10, 11 & 12spd compatible

Material: CNC machined 7075 Txxx Aluminum. Long-lasting construction. Mud optimized.

Chainline: 28T (64bcd) - 46mm ; 30T - 48mm ; 32T - 48.5mm ; 34 and 36T - 50mm

Chain: 10 SPD / 11 SPD / 12 SPD

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

Color: BLACK

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.

Why Oval Chainrings Work

Our 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.

What size should I choose?

Basically the same size you use with round rings but if you feel you are in between two sizes we recommend to choose the bigger one.

How to mount the Oval chainring:

absoluteBlack Chainrings are not Bio Pace:

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 ; 30T: 134mm ; 32T: 143mm ; 34T: 151mm

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