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absoluteBLACK Premium 1X 104 & 64bcd Ovaltraction narrow wide chainrings are designed for any cranks that use 104bcdmounting interface. This is the most common mounting standard for Shimano andother 4 arm cranks. It is the most Premium oval chainring on the market withscientifically proven performance gains. 10/11/12spd compatible
Size (Mass +/-1g):
64BCD: 26T (35g), 28T (42g)
30T 104BCD: 36g - comes with special bolts andspacers
104BCD: 32T (41g), 34T (44g), 36T (53g)
Compatibility: All cranks with 4x 104BCD interface. Thatmeans Shimano XT / Zee / Deore / SLX / XTR, Race Face Sixc, RF Ride, RFChester, RF Respond, FSA, E13 and many more. 9, 10, 11 and 12spd Eaglecompatible.
Material: cnc machined 7075 Txxx Aluminum. Long-lasting construction.Type II anodizing
Chainline: 26&28T (64bcd) - 46mm ; 30T - 48mm ; 32T -48.5mm ; 34&36T - 50mm
Mounting holes: 4 x 104mm BCD (for 32T ring, bolts should bemin 6mm long)
Ovality: Optimized to each size separately. Range:10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) PatentPending
IMPORTANT:
*32T chainring has build-in 2mm spacers andthreaded holes (M8x0.75) to accommodate this size on spider. Other sizes haveregular 10mm holes.
*30T chainring has build-in 2.5mm spacers andthreaded holes (M8 / M5) to accommodate this size on spider. It also comes withbolts and spacers in the package: 2x M8 aluminium bolts T30 torx, 2x M5 steelbolts T25 torx and 2x eccentric spacers. This is a patent pending solution.
* 30T oval chainring will not fit some powermeters, like SRAM Quarq Dzero 104 BCD. If you are unsure whether it will fityour power meter, please contact our customer service team.
If you wish to check for frame clearance with newoval ring, below you can find measurement of biggest dimension of the oval (tipto tip of tooth):
26T: 118mm ; 28T: 127mm ; 32T: 143mm ; 34T: 151mm ;36T: 159mm
ADVANTAGES OF OUR SPECIAL 104 & 64BCD NARROWWIDE CHAINRINGS:
*We mastered our oval chainrings to perfection, soyou can get best possible advantage from the oval/elliptical shape.
*Finest design to provide excellent weight tostrength ratio
*One of a kind special oval shape (Patent Pending)
*Greatly improves traction and climbing abilities
*Unique Patent Pending narrow-wide teeth profilesto keep your chain in place for minimum 12 months!
*Special 3D teeth machining for ultimate mud reliefdecrease wear and noise dramatically
*Superb quality and great look.
*You will ride faster using ovals. If you keepusing round ring then others will get quicker.
*You will not "feel" the oval shape atall
*Reduces stress on knees
HOW TO MOUNT 104BCD ABSOLUTEBLACK OVAL NARROW WIDECHAINRING:
There is a small mark (triangle shaped) on theinner circumference of the chainring.
This mark Must sit behind the crank arm.
In 28T oval there is a dimple instead of thetriangle mark. That dimple must align with the crank arm and Must be visible toyou when mounting the chainring (recesses on the mounting holes face the cranktabs)
DON'T KNOW WHAT BOLTS TO USE WITH 32T OVALCHAINRING WITH INTEGRATED THREADS?
They are standard bolts. You can use a granny ringbolts (from 64bcd chainring) or use the ones that connect middle and big ringfrom 3X crank. You can also buy them from us in Bolts tab. Pick"Long" ones. Other sizes like 34 and 36T use "short" bolts.
It is ideal for 1x 9/10/11/12spd and Singlespeeds.Oval (elliptical) narrow wide chainring does not compromise the work of clutchmechanism in rear derailleur. It also does not require chain tensioner whenusing in singlespeed application. Riding out of saddle on the uphill willbecome more pleasant. These chainrings also help you to recover after kneeinjuries as pedaling becomes smoother and less exhausting. It is the mostadvanced oval chainring currently on the market.
The most advanced, Patent Pending narrow/wide toothprofile ever produced, guarantee minimum 12 months of excellent chain retentioncapabilities! We mean it. Always use a new chain with a new chainring.