Box One M30M Crankset
Best high performance upgrade for competitive BMX racers seeking maximum stiffness.
This is a serious drivetrain upgrade for junior racers that refuses to compromise on rigidity. By pairing a massive 30mm spindle with a hollow-forged design, it delivers pro-level power transfer in a package that’s actually easy to maintain. It’s a complete, no-nonsense solution for kids who are ready to ride harder.
$399.99
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Who it's for
- Competitive BMX racers seeking maximum efficiency during explosive gate starts.
- Performance-focused riders looking to reduce weight without compromising structural integrity.
- Serious athletes who need reliable components for intense competition seasons.
Who should skip it
- Mechanics and riders who prefer universal compatibility across different bike setups.
- Budget-conscious hobbyists who may find the cost prohibitive for casual riding.
- Home mechanics who lack specialized tools for proprietary spindle systems.
Performance breakdown
Power Transfer
The massive 30mm spindle ensures minimal flex during explosive gate starts.
Weight Efficiency
Hollow-forged construction keeps the rotating mass impressively low for junior racers.
Maintenance Ease
Self-extracting bolts make quick work of removal and routine servicing.
Structural Rigidity
7075 aluminum provides a stiff, reliable platform for aggressive BMX riding.
Installation Simplicity
Includes the necessary tools and bottom bracket for a seamless setup.
Durability
Built to withstand the high-impact demands of competitive youth racing.
Key Specs
Crank Arm Length
150 mm
Intended Use
BMX
Drivetrain Speed Compatibility
1x
Bottom Bracket Interface Type
Euro
Material
7075 Aluminum
Weight
509 grams
Bolt Circle Diameter
104 mm
Chainring Mount Type
4-Bolt
Number of Chainrings
1
Spindle Diameter
30 mm
Know before you buy
Still have a question?
Ask Metto anything about the Box One M30M Crankset before you decide.
