This particular 104bcd oval chainring will ONLY work with CN-M9100, 8100 & 7100 HG+ 12spd chain due to different thickness and shape of the teeth. absoluteBLACK Premium 1X 104bcd Oval traction narrow wide chainrings are designed for any cranks that use 104bcd mounting interface. In particular suited for power meters.
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Size (Mass +/-1g): |
32T (41g), 34T (44g), 36T (53g) |
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Color |
Black |
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Compatibility |
All cranks with 4x 104BCD interface. That means all 104bcd power meter spiders, Shimano XT / Zee / Deore / SLX / XTR, Race Face Sixc, RF Ride, RF Chester, RF Respond, FSA, E13 and many more. ONLY Shimano 12spd HG+ chain |
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Material |
cnc machined 7075 Txxx Aluminum. Long-lasting construction. Type II anodizing |
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Chainline |
32T - 48.5mm ; 34&36T - 50mm |
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Mounting holes |
4 x 104mm BCD (for 32T ring, bolts should be min 6mm long) |
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Ovality |
Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending |
IMPORTANT:
*32T chainring has build-in 2mm spacers and threaded holes (M8x0.75) to accommodate this size on spider. Other sizes have regular 10mm holes.
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):
32T: 143mm ; 34T: 151mm ; 36T: 159mm