104 & 64bcd Chainrings

Premium 1X, 104 & 64bcd Oval traction chainrings designed for any cranks with a 104bcd interface. This is the most common MTB crank mounting interface. 32T chainring has build-in 2mm offset/threaded holes (M8x0.75) to accommodate this size on a 104bcd spider. Other sizes have regular 10mm holes that use your stock bolts/nuts. Size (Mass +/-1g): 64BCD: 26T (35g), 28T (42g) 104BCD: 30T (39g), 32T (41g), 34T (44g), 36T (53g) Color Black, Racing Red , Cannondale Green Compatibility All cranks with 4x 104BCD interface, such as Shimano XT / Zee / Deore / SLX / XTR, Race Face, FSA, E13 etc Material CNC machined 7075 Txxx Aluminum Finish type II anodizing Mounting holes 4 x 104mm BCD (for 32T ring, bolts should be a minimum of 6mm long) Ovality Optimized per individual chainring size. Range: 10.2-14.4% and Timing of 110.5-116.3å¡ 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. 30T chainring has build-in 2.5mm spacers and threaded holes (M8 / M5) to accommodate this size on spider. It also comes with bolts and spacers in the package: 2x M8 aluminium bolts T30 torx, 2x M5 steel bolts T25 torx and 2x eccentric spacers. This is a patent pending solution. 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 ; 32T: 143mm ; 34T: 151mm ; 36T: 159mm Designed in UK. Manufactured in Poland (EU).