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Box Two Oversized M30 Cranks

Brand: Box

Code: CKBX2M30JK

Code: CKBX2M30KK

Call us on 01942 826 598 for availability or an alternative!

Code: CKBX2M30LK

Code: CKBX2M30MK

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Brand: Box

All Box One and Two cranksets are engineered and crafted using our Oversized Technology. we all know that there is no use pushing hard on your pedals if you can’t deliver most of that power to the rear wheel. During the creation of our cranks, we were obsessed with Power delivery AKA pedaling stiffness. To reduce lateral deflection at the bottom bracket we chose to enlarge the spindle and the crank arm’s interfaces. We robbed material from unloaded sections to reinforce these zones of high stress. Not only are you going to be more efficient with power delivery, but you’ll also feel the instant response of acceleration. Seen through another lens, less energy will be required to achieve the same elapsed time.

Key differences: The Box Two M30-P crankset is a slightly less acute embodiment of our Oversized technology for cranksets. We squeeze in a show-stopping Praxis™ made 30mm that’s been cold-forged from 7075 T6 aluminum and then painstakingly ground to precision. You’ll be relieved to know this will all fit in a European bottom bracket. The crank arms and spider are poached from the Box One M35 model and as a result, you get all that hollow-forged generosity to help you put that power down. These cranks are engineered for the larger-sized racers.


BB86 frames require Praxis™ part 86-4001B or 86-4001W.
BB30/PF30 frames require Praxis™ part 68-4001R or 68-5401R.
T47 frames require Praxis™ part 47-0000.
Do not use pedal washers when installing pedals onto these cranks. M30-P cranks were designed to be used without pedal washers.


• Arms: 7075 T-6 Aluminum
• Spindle: 7075 T-6 Aluminum
• Arms: Hollow-Forged & CNC
• Spindle: CNC Turned
Finish: Anodized w/Laser-Etched Graphics
Chainline: 44.5mm
Q Factor: 163mm
Spindle: 30mm Included
Bottom Bracket: BSA 30mm 1.37 Included
• Chainring: 4-bolt 104 BCD
Size & Weight:
• 172.5mm / 800 grams / 28.2 ounces
• 175mm / 810 grams / 28.6 ounces
• 177.5mm / 820 grams / 28.9 ounces
• 180mm / 830 grams / 29.3 ounces

*Weight does not include BB
**Due to the complexity of hollow-forged manufacturing, the weights may vary +/- 10%