Metallic teal Radio Raceline Quartz 2025 Pro Frame BMX race frame with Quartz branding on the top tube, featuring a Sliding Dropout Disc System for optimal performance.

The Radio Raceline Quartz 2025 Pro Frame flaunts its bold "Radio" branding on a black BMX race frame. Made with 6061-T6 hydroformed tubing, it features a sleek design and innovative Sliding Dropout Disc System for enhanced versatility and performance, set against a white background.

Three Radio Raceline Quartz Disc Pro XXXL frames in black, green, and blue are aligned diagonally. Crafted with a lightweight alloy frame for agility, they come with a note indicating potential variations in final appearance.

The Radio Raceline Quartz Disc Pro XXXL Frame is a blue bicycle frame with "Rapid" and "Quartz" labels, featuring a lightweight alloy design. Please note: Final product appearance may vary.

Description

Radio have been quietly chipping away at development on their Quartz frame since its introduction a few years back to a point where it's one of the most advanced aluminium race frames available.

For 2025 one of the innovations is the Sliding Dropout Disc System (SDDS) which utilises a flat mount style calliper and internal cable routing. This not only gives the frame a clean look, the flat mount caliper system is in our opinion one of the best disc brake designs for BMX frames. BMX race bikes don't require large rotors to dissipate heat after repeated braking efforts, meaning that a small 120mm rotor can be utilised, keeping weight low and hardware tucked away from harms way.

Speaking of dropouts, the 2025 Quartz frame can be built up with either a 10mm bolt-up rear hub, or a 15mm thru-bolt hub.

The frames are manufactured from 6061-t6 hydroformed Paradigm superior tubing, which means that Radio can dial in where the frames require strength and beef up the tubing thickness, and shave that wall thickness right down in areas that don't require it. Leading to a class leading lightness for an aluminium pro frame.

Features

Sliding dropout disc system. The 2025 SDDS runs a flat mount calliper with internal cable routing, so the brake hardware sits tucked away out of harm's way.
Runs 10mm or 15mm rear hubs. Build it with a 10mm bolt-up or a 15mm thru-bolt rear hub: all the dropout hardware is included.
1.73 kg hydroformed 6061 frame. Paradigm tubing is thickened where the frame needs strength and shaved down where it doesn't, for class leading lightness in an aluminium pro frame.
A small 120mm rotor is plenty. Race efforts don't build the heat that demands a big rotor, so you can run a 120mm rotor and keep weight low.
Race fittings sorted. Tapered 1-1/8" to 1.5" integrated head tube, BSA 68mm bottom bracket, 27.2mm seat post and a 31.8mm ID seat clamp.

Specifications

Sizes: Pro
Bottom bracket height: 11.6" (294.64mm)
Bottom bracket: BSA, 68mm wide
Material: 6061-T6 aluminium
Tubing: Hydroformed 6061 alloy, Paradigm tubing
Dropouts: Sliding dropout disc system (SDDS) for 10 & 15mm axles, includes all hardware
Brake mounts: Flat mount disc brake only, not compatible with V-brakes
Cable routing: Internal
Head tube: Tapered 1-1/8" to 1.5" for integrated headset (125mm)
Seat tube: 9.1" (231mm), 27.2mm seat post
Seat clamp: For 31.8mm ID seat clamp
Wheel size: 20" (406mm) x 1.75"
Weight: 1.73kg