Radio Race QUARTZ PRO XXXL Frame

The Quartz Pro XXXL Frame is a world championship-winning BMX race frame, now redesigned with a cutting-edge disc-brake-specific platform. Featuring the advanced Sliding Dropout Disc System (SDDS), internal cable routing, and ultra-lightweight hydroformed 6061 alloy construction, this frame delivers exceptional stiffness, precision, and performance for modern BMX racing.

Features

• NEW disc-brake-specific design with clean internal cable routing
• Forged and CNC-machined Sliding Dropout Disc System (SDDS)
• Integrated chain tensioner for easy setup and adjustment
• Ultra-lightweight hydroformed 6061 alloy construction
• Proven race geometry with x10 world championship victories
• Paradigm superior tubing for optimized strength and stiffness
• Flat mount disc brake only (not compatible with v-brakes)
• Designed for 140mm and 120mm rotors

Frame Specifications

• Color: Black / Spectral Space Green / Spectral Abyss Purple
• Toptube Length: 22.25” (565mm)
• Chain Stay Length: 14.8” (376mm)
• Rider Area: 564.2mm
• Head Tube Angle: 74°
• Seat Tube Angle: 71°
• BB Height: 11.6" (294.64mm)
• Seat Tube Height: 9.1" (231mm)
• Wheel Size: 20" (406mm) x 1.75”
• Weight: 1.77kg (3.90lbs)

Technical Details

• Tubing: Hydroformed 6061 Alloy, Paradigm Tubing
• Head Tube Size: Tapered 1-1/8” - 1.5” Integrated
• Head Tube Length: 4.9" (125mm)
• Bottom Bracket: BSA, 68mm Wide
• Seat Post Size: 27.2mm
• Seat Clamp Compatibility: 31.8mm ID Seat Clamp
• Dropouts: SDDS for 10mm & 15mm Axles (hardware included)
• Brake Compatibility: Flat Mount Disc Brake Only

Brake & Rotor Compatibility

• Compatible with flat mount disc brake systems only
• Designed for 140mm and 120mm rotors
• 120mm rotor fitment should be verified with an authorised dealer depending on hub and brake calliper dimensions