MR30 Spindles

These are replacement spindles for our MR30 series cranks that use a 30mm spindle.  Refer to the chart below to see which spindle will work for your configuration. Specs Made from 2024-T365 aluminum Anodized black, then bearing surfaces precision ground Comes in four lengths Compatibility Compatible with White Industries MR30 series crank arms Not compatible with any other brands of cranks R30/G30 spindle is for 68mm or 86mm bottom bracket shells Spindle 126.2mm total length M30/A30 spindle is for 68mm/73mm or 86mm/92mm bottom bracket shells Spindle is 131.2mm total length Fat Bike -100mm spindle is for 100mm bottom bracket shells only (will not fit 120mm shells) Spindle is 158.2mm total length For 177mm rear axle spacing with 66.5mm chainlines Fat Bike -100mm/120mm spindle is for 100mm or 120mm bottom bracket shells Spindle is 178.2mm total length For 197mm rear axle spacing with 76.5mm chainlines M30/A30/R30/G30 Crank Comparison Chart Mountain M30 Adventure A30 Road R30 Gravel G30 Crank arm M30  Mountain arms R30 Road arms R30 Road arms M30 Mountain arms Spindle M30 Mountain spindle M30 Mountain spindle R30 Road spindle R30 Road spindle 1x chainline (3mm offset ring, facing inward) 49mm 49mm 46.5mm 46.5mm 1x Boost chainline  (0mm offset/flat ring) 52mm 52mm 49.5mm 49.5mm 1x chainline  (3mm offset ring flipped outward)  *55mm *55mm 52.5mm 52.5mm 2x chainline (measured between the 2 rings) 47.5mm 47.5mm 45mm 45mm Q factor 176mm 163.5mm 158.5mm 171mm Width between inside of arms (for chainstay clearance) 149.6mm 137mm 132mm 144.6mm Weight 575g (175mm w/spindle) 565g (170mm w/spindle) 560g (170mm w/spindle) 570g (175mm w/spindle) BB shell widths 68mm/73mm  or  86mm/92mm 68mm/73mm  or  86mm/92mm 68mm or 86mm 68mm or 86mm **OBW  (outer bearing width) 96mm (+/- 1mm) 96mm (+/- 1mm) 91mm (+/- 1mm) 91mm (+/- 1mm) *55mm chainline for Rohloff and Super Boost hubs **This is the allowable outside-to-outside measurement of your BB bearings (with seals) when they are mounted to your frame.  The bearing preload collar on the crank is adjustable and can accommodate slightly wider or narrower widths (+/- 1mm) than the target number. What’s In The Box One spindle No mounting bolts included  Technical Documents MARG30 Crank Assembly MARG30 Crank and Bottom Bracket Compatibility Chart Bottom Bracket Tool Compatibility MARG30 Crank and Chainring Dimensional Drawings