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.
10 or 11spd chain for geared bike or 6-8 spd for SS. If used in 1x9 drivetrain - 10spd chain must be used to obtain the performance. (yes - 10spd chain will work great on 9spd cassette)
No. But if you want one then chain guide should have 2 teeth more capacity than nominal oval ring size.
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.
Looking for 28T?
Please choose our Sram Boost version for this size. 28T is the only size which will clear the chainstays and create even better chainline on short BB30 axle.
Frame clearance (biggest dimension of the oval tip to tip of tooth):