BOX

One Top Load BMX Stem - 31.8mm

BOX One Top Load BMX Stem is a modern BMX race stem built for riders who want a stiff, dependable front end without unnecessary weight. Cold-forged and CNC-machined from high-quality 6061-T6 aluminum, it delivers precise bar and fork interface control for hard gate starts, sprints, and repeated impacts on the track.

• Top Load design - simplifies handlebar installation and makes it easier to dial in bar height and cockpit setup
• Cold-forged + CNC-machined construction - improves stiffness and strength for more direct steering feel under high load
• 31.8mm handlebar clamp - built for oversized 31.8 bars and a solid, secure clamp interface
• ±5° rise (flip to adjust) - offers practical bar-height tuning without changing parts
• 28mm stack height - compact profile for a clean, race-focused front-end fit
• Reach + weight options - 48mm (234g / 8.3oz) or 53mm (240g / 8.5oz) to match preferred steering speed and body position