absoluteBLACK Oval Cinch Narrow Wide BOOST 30t Chainring Black

absoluteBLACK premium 1X RaceFace Boost 148 direct mount compatible Oval chainrings are designed for CINCH system RaceFace uses to mount chainring directly to the crank. This version is for BOOST 148 specific bikes and FAT BIKES (when reversed). Size (Mass +/-1g): 26T (52g), 28T (54g), 30T (58g), 32T (62g), 34T (69g), 36T (75g)
Colour: Black
Compatibility: RaceFace Cinch system cranks. RF Next SL G4, Next SL, Next R, RF SIXC, RF Turbine, RF Atlas, AEFFECT, RIDE CINCH cranks. 9, 10, 11 and 12spd Eagle compatible.
Material: cnc machined 7075 Txxx Aluminium. Long-lasting construction
Finish: Type II anodizing
Chainline: 52mm. 3mm offset
Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3 after TDC (top dead centre) Patent Pending

Difference 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.

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 ; 36T: 159mm

ADVANTAGES OF OUR SPECIAL DIRECT MOUNT CHAINRINGS:
We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape.
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 narrow-wide 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.