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Box Two M30-P Crankset - 1
Box Two M30-P Crankset - 2
Box Two M30-P Crankset - 3
Box Two M30-P Crankset - 4
Box Two M30-P Crankset - 5
Box Two M30-P Crankset - 6
Box Two M30-P Crankset - 7

Box Two M30-P Crankset

Box
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$319.96 $399.95
  • 175mm / Black
  • 177.5mm / Black
  • 180mm / Black
  • 180mm / Silver
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About This Product: Box Two M30-P Crankset

The Box Two M30-P Cranks are engineered using Box’s Oversize Technology design philosophy to provide the ultimate in stiffness and the low end of the weight curve. These being Box Two they have not gone full zealot with the Oversize, but they have included a Praxis made 30mm aluminum alloy spindle with the aim of increasing pedaling stiffness to the max. Fun fact: the crank arms and spider are actually from the Box One M35 Crank, so you’ll have that going for you...which is nice.

FEATURES

  • Oversized Technology™ Hollow Forged Design
  • Oversized 30mm Alloy Spindle
  • Self-Extracting Crank Bolt System
  • 4-bolt 104 BCD Spider with Flex-Resistant Ring
  • External BSA 30mm BB Included

COMPATIBILITY

  • Box Two Chainring
  • Box One Chromoly Chainring Bolts
  • Box One 7075 Alloy Chainring Bolts
  • Box Two Oversized bottom bracket M30
  • Pedal Washers are not compatible

SPECIFICATIONS

Box Two M30-P Crankset Specifications
Arm Length BB Spindle Material Process Chainline Q Factor Weight
Arm Length: 172.5mm BB: BSA 30mm 1.37 Spindle: 30mm Alloy Material: 7075 T-6 Aluminum Process: Hollow-Forged Chainline: 44.5mm Q Factor: 163mm Weight: 890 g / 31.5 oz
Arm Length: 175mm BB: BSA 30mm 1.37 Spindle: 30mm Alloy Material: 7075 T-6 Aluminum Process: Hollow-Forged Chainline: 44.5mm Q Factor: 163mm Weight: 906 g / 32.0 oz
Arm Length: 177.5mm BB: BSA 30mm 1.37 Spindle: 30mm Alloy Material: 7075 T-6 Aluminum Process: Hollow-Forged Chainline: 44.5mm Q Factor: 163mm Weight: 920 g / 32.5 oz
Arm Length: 180mm BB: BSA 30mm 1.37 Spindle: 30mm Alloy Material: 7075 T-6 Aluminum Process: Hollow-Forged Chainline: 44.5mm Q Factor: 163mm Weight: 924 g / 32.6 oz

Crank Size Chart

Crank Size Chart
Inseam length Crank Length
Crank Size: Micro, Mini. Junior
Inseam length: 15 - 16 inch Crank length: 130 mm
Inseam length: 16 - 17.5 inch Crank length: 135 mm
Inseam length: 17.5 - 19 inch Crank length: 140 mm
Inseam length: 19 - 20 inch Crank length: 145 mm
Inseam length: 20 - 22 inch Crank length: 150 mm
Crank Size: Junior, Expert, Expert XL
Inseam length: 20 - 22 inch Crank length: 150 mm
Inseam length: 22 - 23 inch Crank length: 155 mm
Inseam length: 23 - 25 inch Crank length: 160 mm
Inseam length: 25 - 26 inch Crank length: 165 mm
Crank Size: Pro and Larger
Inseam length: 26 - 27 inch Crank length: 170 mm
Inseam length: 27 - 28 inch Crank length: 175 mm
Inseam length: 28 - 30 inch Crank length: 177.5 mm
Inseam length: 30 - 31 inch Crank length: 180 mm
Inseam length: 31 - 32 inch Crank length: 185 mm
Inseam length: 33+ inch Crank length: 190 mm

How To Measure Your Inseam

  1. Start with a pair of pants you already have that fit you well and lay them flat on the floor.
  2. Carefully measure the length from the crotch seam to the bottom of the leg.
  3. THIS NUMBER IS YOUR INSEAM. Use this number to help you choose your cranks.