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absolute Black XX1 Direct Mount ovales Kettenblatt short spindle BB30 32 Zähne schwarz

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The absoluteBLACK oval BB30 traction chainring for sram cranks

Absoluteblack Premium Sram compatible Direct mount 1X Oval BB30 chainrings are designed for BB30/PF30 SHORT spindle cranks. Chainring is flat (0mm offset). Fits BB30 XX1, X01, Eagle 12spd and others.

Why absoluteBLACKs' oval chainrings work
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?
- 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 similar effort to the one riding round 31T ring, but you will gain the speed similar to riding 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 Oval to Sram BB30 cranks
You need to unscrew these 3 torx t-25 bolts from the crank. Then remove the spider+chainring combo you currently have there. Clean the splines and put some grease on them. Position the chainring in place (note there is only one way to fit this Sram compatible chainring so you don't have to worry how to do it. Note that there are recesses for the bolts on one side). Close all 3 bolts to about 5-7Nm.


  • 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
  • absoluteBLACK mastered their oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape


weight30T: 52g
32T: 57g
34T: 66g
compatibilitySRAM XX1, XX1 Eagle, X01, X01 Eagle, X0, X9, X7, S2210, S1400 and Truvativ AKA cranks
BB30 short spindle only
Also fits for Fatbikes with GXP spindle!
9, 10, 11 and 12spd Eagle compatible.
material7075 Txxx Aluminum
Mud optimized
finishtype II anodizing
chainline49mm. 0mm offset
productioncnc machined

Scope of delivery

  • 1 x absoluteBLACK oval BB30 traction chainring for sram cranks (see item description for details)

Product video

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