The Helium Pro XXXXL frame from RADIO RACELINE is a hydroformed aluminum BMX race frame with forged dropouts and disc brake compatibility.

Features

• Hydroformed 6061 aluminum race frame
• Forged and CNC-machined dropouts with integrated chain tensioner bolts
• 20 mm thru-axle dropouts with adaptors for 15 mm and 10 mm axles
• Removable V-brake mounts, disc brake compatible with the Helium PRO Disc Brake Mount

Specifications

• Material: Hydroformed 6061 aluminum, forged and CNC-machined dropouts
• Wheel size: 20" (406 mm) x 1.75"
• Head tube: Tapered 1-1/8" – 1.5" for integrated headset, 125 mm (4.9")
• Seat post: 27.2 mm
• Seat clamp: 31.8 mm ID
• Bottom bracket: BSA, 68 mm wide
• Dropouts: 20 mm slots, adaptors for 15 mm and 10 mm (3/8") included, integrated chain tensioner bolts
• Brakes: Removable V-brake mounts (88 mm pivot-to-pivot); disc brake compatible with optional Helium PRO Disc Brake Mount
• Colors: Black, Metallic Caribic Blue, Galactic Ice Purple
• Weight: 1,860 g

Geometry

• Top tube: 22.5" (572 mm)
• Chainstay: 15.2" (386 mm)
• Rider area: 22.47" (570.9 mm)
• Head tube angle: 74°
• Seat tube angle: 71°
• BB height: 11.6" (295 mm)
• Seat tube height: 9.1" (231 mm)