Box Two M30-P Crankset

Box Two M30-P Crankset

Product Overview

The Box Two M30-P crankset is a premium performance drivetrain component engineered for competitive BMX racing. The cold-forged 30mm Praxis spindle with oversized hollow-forged 7075 aluminum crank arms delivers exceptional stiffness and power transfer comparable to premium racing systems without weight compromise.

Key Features

• Cold-forged 30mm Praxis™ M30 spindle – Super-stiff 7075 aluminum alloy spindle precision-engineered for maximum rigidity; independent testing confirms market-leading stiffness only 10% less than premium M35 systems
• Oversized hollow-forged crank arms – 7075-T6 aluminum construction with hollow forging process maximizes stiffness while minimizing weight; identical arms to Box One™ M35 for exceptional strength-to-weight ratio
• 104 BCD four-bolt spider – Standard modern pattern compatible with Box Two chainrings and other contemporary sprockets; proven attachment system without adapter hardware
• Available lengths – 172.5mm, 175mm, 177.5mm, or 180mm options accommodate different rider sizes and proportions; extended sizing suitable for larger or adult riders
• Matte black anodized finish – Professional corrosion-resistant coating with laser-etched graphics maintains appearance and performance in wet conditions
• Praxis™ M30-BSA external bottom bracket included – Quality sealed bearing system compatible with European-style threaded BB shells; BB86 or BB30/PF30 adapters available separately
• M30 BB installation tool included – Specialized tool simplifies bottom bracket installation without additional purchases
• Compact Q-factor – 163mm Q-factor geometry optimizes pedaling mechanics and frame clearance without excessive width
• Independent stiffness testing – Verified market-leading stiffness through third-party laboratory testing; confirmed performance across all comparable cranks
• Direct manufacturer shipping – Shipped directly from Box Two; ensures product authenticity and quality

Technical Specifications

• Type: 2-piece BMX crankset
• Material: 7075-T6 aluminum (cold-forged spindle, hollow-forged crank arms)
• Crank lengths: 172.5mm, 175mm, 177.5mm, or 180mm
• BCD: 104mm
• Spindle: 30mm Praxis™ M30 (cold-forged, super-stiff)
• Axle diameter: 24mm
• Finish: Matte black with laser-etched graphics
• Q-factor: 163mm
• Bottom bracket: Praxis™ M30-BSA external threaded (included)
• BB compatibility: European-style threaded shells; BB86 or BB30/PF30 adapters available separately
• Included hardware: Praxis™ M30-BSA BB, M30 BB installation tool
• Weights by length:
  • 172.5mm: 753g (26.6oz)
  • 175mm: 755g (26.6oz)
  • 177.5mm: 768g (27.1oz)
  • 180mm: 771g (27.2oz)
  • BB only: 115g (4.1oz)
• Application: Competitive BMX racing and performance riding
• Shipping: Direct from manufacturer (USA); separate shipment from other brands

Compatibility and Ideal Use Cases

Compatible with 104 BCD chainrings and European-style threaded bottom bracket shells; BB86 or BB30/PF30 frame adaptability available through separate Praxis adapters. Ideal for competitive BMX racers seeking market-leading stiffness and performance without weight compromise. Suitable for high-level racing applications where drivetrain rigidity and power transfer efficiency matter. The four length options accommodate different rider sizes from 172.5mm to 180mm without committing to single geometry. Works with any standard 3/32" BMX chain and compatible chainrings. The included bottom bracket and installation tool provide complete drivetrain solution without additional purchases. Recommended for competitive BMX racers, performance-focused riders, and anyone prioritizing aerospace-grade materials, verified stiffness testing, and professional racing-grade crankset engineering. Note: Ships directly from manufacturer; may require additional lead time and ships separately from other brand orders.

Includes:

• Praxis™ External BSA Bottom Bracket
• M30 BB Installation Tool

Weight:

• 172.5mm: 753 grams / 26.6 ounces
• 175mm: 755 grams / 26.6 ounces
• 177.5mm: 768 grams / 27.1 ounces
• 180mm: 771 grams / 27.2 ounces
• BB only: 115 grams / 4.1 ounces