Box One Os 31.8 Cromo 8.5" Handlebar

Box One OS 31.8 Cromo 8.5" Handlebar

Product Overview

The Box One OS is a professional-grade oversized chromoly handlebar featuring Box's proprietary Oversized Technology. At 8.5" rise with 31.8mm clamp and 28.25" width, it combines steering and pedaling stiffness through variable wall thickness tube construction optimized for elite BMX racing.

Key Features

• Oversized Technology – Strategic tube diameter and wall thickness variation optimizes stiffness while minimizing weight
• Dual-Purpose Engineering – Contributes to both steering stiffness and pedaling rigidity for comprehensive front-end performance
• 4130 Chromoly Steel – Toughest handlebar material available; proven durability for competitive racing
• Massive Clamp Interface – 31.8mm clamp diameter provides substantial stem contact area for steering stiffness
• 13 Butted Tubes – Variable wall thickness construction reduces weight without sacrificing strength
• Mandrel-Formed Construction – Precision tube forming ensures consistent geometry and performance
• Extruded Process – Professional manufacturing delivers precision and durability
• 8.5" Rise – 215.9mm height provides elevated hand position for modern BMX racing geometry
• 28.25" Width – 717.5mm width offers control and stability for racing applications
• 7° Back Sweep – Ergonomic sweep angle reduces wrist strain during extended riding
• 2° Up Sweep – Slight upward sweep provides natural hand position and comfort
• 22.2mm Grip Diameter – Compatible with standard BMX grip systems
• Color Options – Available in gloss black or chrome with pad printing
• Professional Racing Component – Elite-grade handlebar for competitive BMX racing

Technical Specifications

• Material: 4130 chromoly steel
• Construction: Extruded and mandrel-formed
• Clamp diameter: 31.8mm
• Bar bore/grip diameter: 22.2mm
• Rise: 8.5" (215.9mm)
• Width: 28.25" (717.5mm)
• Back sweep: 7°
• Up sweep: 2°
• Weight: 990g (1000g listed; slight variation typical)
• Tube construction: 13 butted with variable wall thickness
• Finish: Gloss black or chrome with pad printing
• Technology: Oversized Technology with strategic tube engineering

Compatibility & Ideal Use Cases

• 31.8mm Stem Systems – Requires 31.8mm stem clamp; not compatible with 22.2mm or other stem diameters
• Professional BMX Racing – Elite-grade component engineered for competitive racing
• Steering and Pedaling Stiffness – Oversized technology optimizes both steering precision and pedaling rigidity
• Standard 22.2mm Grips – Compatible with all standard BMX grip systems
• Modern BMX Geometry – 8.5" rise and 28.25" width match contemporary racing bar standards
• Elite Riders – Purpose-built for professional and national-level BMX racers
• Lightweight Racing Builds – 990g weight suitable for racing-focused setups
• Comfort and Control – Sweep angles reduce wrist strain during extended racing

Build Requirements & Compatibility

• 31.8mm Stem Required – MUST use 31.8mm stem clamp; incompatible with 22.2mm or other stem sizes
• Standard BMX Grips – Compatible with 22.2mm grip diameter grips
• Brake Lever Compatibility – Verify brake lever design accommodates 31.8mm bar clamp area
• Cable and Housing Routing – Verify adequate frame routing for brake cables and components
• Handlebar Stem Bolt Torque – Follow stem manufacturer torque specifications for proper clamping

Important Notes

• Ships direct from manufacturer in USA; may ship separately from other orders
• 31.8mm clamp diameter REQUIRES compatible 31.8mm stem; verify stem specification before ordering
• Oversized Technology strategically varies tube diameter and wall thickness for optimized stiffness
• Massive clamp interface provides substantial stem contact for superior steering stiffness
• 13 butted tubes with variable wall thickness balance weight and durability
• Mandrel-formed and extruded construction ensures precision and consistency
• 8.5" rise slightly higher than standard; provides elevated hand position for modern racing geometry
• 7° back sweep and 2° up sweep ergonomic angles reduce wrist strain
• 990g weight competitive for professional-grade oversized racing bars
• 4130 chromoly toughest handlebar material; proven for competitive racing durability
• Color options: Gloss black or chrome with pad printing for aesthetic customization
• Professional manufacturing and engineering ensure elite-level performance
• Suitable for professional and national-level BMX racing applications
• Verify stem compatibility before purchase; 31.8mm clamp exclusive to 31.8mm stems