|30T Black +bolts|
|OVXT8000SH/30BK||$103.99||out of stock|
|32T Black +bolts|
|OVXT8000SH/32BK||$103.99||out of stock|
|34T Black + Bolts|
|OVXT8000SH/34BK||$103.99||out of stock|
|36T black + Bolts|
|OVXT8000SH/36BK||$103.99||out of stock|
Size (Mass +/-1g): 30T (44g), 32T (50g), 34T (60g), 36T (69g)
Compatibility: Fits Shimano XT M8000, SLX M7000 and MT700 cranksets 1X and 2X only. Boost and non-boost. ONLY Shimano 12spd HG+ chain
Material: cnc machined 7075 Txxx Aluminum. Long-lasting construction! Type II anodizing
Chainline: perfect 49mmMounting holes: 4 x 96mm BCD Asymmetrical design. Use stock boltsOvality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending
All 4 sizes have built-in standoffs to provide the ideal 1X chainline.
IMPORTANT - Use provided bolts to mount the 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): 30T: 134mm ; 32T: 143mm ; 34T: 151mm
The World's lightest oval (elliptical) RaceFace spiderless traction chainring - period!. Non circular chainrings, Non-round chainrings. Asymmetrical chainrings. Traction 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):
30T: 134mm ; 32T: 143mm ; 34T: 151mmDifference between Boost148 and non-boost chainrings is in the offset/dish of the chainring itself only. You would use same crank in both boost and non-boost bikes, but chainring offset has to be different to accommodate chainstay clearance. Boost chainrings have only 3mm offset while non-boost ones 6mm.
Word on BIOPACE
Please understand that this is not Biopace technology. Shimano created Biopace with the completely wrong orientation of the biggest radius of the oval. Instead of positioning it in power zone which is slightly below the level of the crank, they clocked it to the dead zone where human generates least power. The result was that in power zone pedaling was too easy and in dead zone very difficult. Exactly opposite to how it should be.
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.
Our main/recommended clocking position is a fantastic setup for everyone. However some more seasoned riders may like a bit more aggressive clocking position. RaceFace oval chainring allows you to change clocking position by 22deg both ways from initial setup. This is the only chainring in our line offering this adjustability.
It is ideal for 1x 9/10/11 system and Singlespeeds!. Oval (elliptical) chainring does not compromise the work of clutch mechanism in rear derailleur(video at the bottom). It also does not require chain tensioner when using in Singlespeed application. It is the most advanced oval chainring currently on the market.
The most advanced, Patent Pending narrow/wide tooth profile on the Market guarantee minimum 12 months of excellent chain retention capabilities! We mean it. Always use a new chain with a new chainring.