Our Premium 1X 104 & 64bcd 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.
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.
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):
How to mount 104 BCD Absolute Black 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)