DESCRIPTION
Featuring oversized hollow-forged crank arms and a massive 30-millimeter Praxis™ M-30 spindle cold-forged from 7075 aluminum and precision ground to extremely tight tolerances, Box Two™ M30-M cranks fit frames with European bottom brackets, paired with the same oversized, hollow-forged arms and 104 BCD spider with a flex-resistant ring as our Box One™ M35 cranks.
Each crankset includes a Praxis™ M30-BSA Threaded Bottom Bracket that is compatible with all BSA European style bottom brackets. For frames with BB86 or BB30/PF30 bottom bracket shells, compatible adapters can be purchased separately from Praxis ™.
- Oversized Technology™ Hollow Forged Design
- Oversized 30mm Alloy Spindle
- Self-Extracting Crank Bolt System
- Top-Load Clamp Design
- 4-bolt 104 BCD Spider
- External BSA 30mm BB Included
- Box Two Chainring
- Box One Chromoly Chainring Bolts
- Box One 7075 Alloy Chainring Bolts
- Box Two Oversized bottom bracket M30
For compatibility questions, please click here.
FAQ
No. These cranks are designed to not use pedal washers. Installing pedal washers can damage the crank as the pedal will not be threaded in sufficiently.
Yes, but you will need a BB86 conversion bottom bracket available from Praxis Cycle Works.
The cranks are designed to specifically for 68mm wide BMX bottom bracket shells and require no spacers. Spacers may be required if your frame has a bottom bracket shell that is less than 68mm wide.
No. A chainring can only be installed on the inside of the spider.
No. A loose pedal will damage the crank and can cause injury. Always ensure that your pedals are tightened correctly.
Notes:
| 145mm | 150mm | 155mm | |
|---|---|---|---|
| BB (Included) | BSA 30mm 1.37 | BSA 30mm 1.37 | BSA 30mm 1.37 |
| Spindle | 30mm Alloy | 30mm Alloy | 30mm Alloy |
| Material | 7075 T-6 Aluminum | 7075 T-6 Aluminum | 7075 T-6 Aluminum |
| Process | Hollow-Forged | Hollow-Forged | Hollow-Forged |
| Chainline | 44.5mm | 44.5mm | 44.5mm |
| Q Factor | 153mm | 153mm | 153mm |
| Weight | 498g/17.6oz | 509g/17.9oz | 518g/18.3oz |
Due to the complexity of hollow-forged manufacturing, the weights may vary +/- 10%