Box One Oversized Chromoly Handlebar

The Box One Oversized Chromoly Handlebars are designed for BMX racers who demand maximum stiffness, strength, and power transfer. Constructed from premium 4130 chromoly steel and engineered around Box’s Oversized™ Technology, these handlebars deliver exceptional steering precision while reducing flex during hard sprint efforts.

Unlike traditional handlebars, Box Oversized™ bars utilize a larger 31.8 mm clamp interface and strategically optimized tubing profiles to increase both steering and pedaling stiffness. By relocating material from low-stress areas to high-load zones, Box engineers have minimized handlebar twist and improved responsiveness under load.

For larger and more powerful riders, the chromoly construction allows for greater variation in wall thicknesses, increasing strength while maintaining a competitive weight.

Features

• Premium 4130 chromoly steel construction
• Oversized™ 31.8 mm clamp interface for maximum front-end stiffness
• 13-butted tubing with variable wall thicknesses for optimized strength-to-weight ratio
• Increased steering precision and reduced handlebar flex
• Enhanced power transfer during sprinting and gate starts
• Designed specifically for higher rider loads and aggressive BMX racing

Oversized™ Technology

• Massive 31.8 mm clamp area increases steering stiffness
• Reduces handlebar twist and flex under load
• Improves rider input and front-end responsiveness
• Provides a more direct connection between rider and bike
• Complements other Box Oversized™ components for maximum performance

Specifications

• Material: 4130 Chromoly Steel
• Manufacturing Process: Extruded & Mandrel Formed
• Clamp Diameter: 31.8 mm
• Grip Area Diameter: 22.2 mm
• Width: 28.25” (718 mm)
• Backsweep: 7°
• Upsweep: 2°

Available Sizes

• 5.5” Rise — 920 g (32.5 oz)
• 6.5” Rise — 920 g (32.5 oz)
• 7.5” Rise — 970 g (34.2 oz)
• 8.0” Rise — 990 g (34.9 oz)
• 8.5” Rise — 1000 g (35.3 oz)

Finish Options

• Gloss Black with Pad Printing
• Chrome with Decal Graphics

Compatibility

• Stem Clamp Diameter: 31.8 mm
• Grip Compatibility: Standard 22.2 mm BMX grips

Standards

• Meets or exceeds EN BMX Category 1 and Category 2 standards.