Radio Race Helium Expert XL Frame

The Helium Expert XL Frame is a super lightweight BMX race frame designed for riders who demand speed, precision, and modern race performance. Built from hydroformed 6061 alloy tubing with forged CNC-machined dropouts, this premium frame delivers exceptional stiffness, responsive handling, and full race-ready durability. Compatible with both V-brakes and disc brakes (with optional mount), the Helium remains one of the most advanced and visually striking BMX race frames available.

Features

• Super lightweight alloy BMX race frame
• Hydroformed 6061 alloy tubing construction
• Forged & CNC-machined dropouts
• Integrated chain tensioner bolts
• Compatible with 20” x 1.4” tires
• Disc brake compatible with optional Radio Helium Expert Disc Brake Mount
• Removable V-brake mounts
• Race-proven geometry for high-speed performance

Specifications

• Color: Black / Galactic Ice Purple
• Toptube Length: 20.5” (521mm)
• Chain Stay Length (Min): 13.2” (335mm)
• Rider Area: 20.7” (526.6mm)
• Head Tube Angle: 73.5°
• Seat Tube Angle: 71°
• BB Height: 10.8” (274mm)
• Seat Tube Height: 8.42” (214mm)
• Wheel Size: 20” (406mm) x 1.4”
• Head Tube Size: 1” integrated headset
• Seat Post Size: 22.2mm
• Seat Clamp Size: 25.4mm ID
• Tubing: Hydroformed 6061 alloy
• Bottom Bracket: BSA, 68mm wide
• Head Tube Length: 4.72” (120mm)
• Dropouts: 10mm (3/8”) slots
• Brake Mounts: Removable V-brake mounts, 77mm pivot-to-pivot
• Disc Brake Compatibility: Yes, with additional mount
• Weight: 1.59kg (3.50lbs)