Absoluteblack premium 1x 104 & 64bcd oval traction narrow wide 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.
specifications:
size (mass +/-1g):
– 64bcd: 26t (35g), 28t (42g)
– 30t 104bcd: 36g – comes with special bolts and spacers
– 104bcd: 32t (41g), 34t (44g), 36t (53g)
compatibility:
– all cranks with 4x 104bcd interface. that means shimano xt / zee / deore / slx / xtr, race face sixc, rf ride, rf chester, rf respond, fsa, e13 and many more. 9, 10, 11 and 12spd eagle compatible.
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 be min 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) patent pending





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