MR30 Spindles

Product Description

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