Radio Raceline Quartz Disc Frame Features
![](http://backbonebmx.com/cdn/shop/files/Radio_Sliding_Dropout_Disc_System_Adaptor_Example_Webres_1-2048x1366_{width}x.jpg?v=1718078262)
The Radio Quartz Disc race frame is here to solve problems - no more annoying adapters or weird issues when using disc brakes, thanks to their Sliding Dropout Disc System.
The Radio Quartz Disc frame finally solves the problem all race frames seem to have; disc brakes that require weird adapters, or don't seem to work quite right.
Not anymore.
Thanks to Radio's Sliding Dropout Disc System and use of a flat mount disc brake, the Radio Quartz frame has the most dependable and strong system yet.
With the Paradigm tubing, internal brake routing and the disc system, you'll have one of the lightest, and most stress free BMX race frames on the market!
Material: Hydroformed Paradigm 6061-T6 alloy
Sliding dropout disc system for use with flat mount disc brake
Forged and CNC machined dropouts with Integrated chain tensioners
Internal disc brake routing
Water transfer (no scratch) decals
Tapered 1-1/8" - 1.5" headtube
Enclosed dropout (including chain tensioners for 10 or 15mm axles only)
Suits 20 x 1.75" wheel size
GEOMETRY (All sizes)
74º Head tube angle
231 mm seat tube length
11.6" BB height
27.2mm seat post size
European Threaded BB
Weight: 1.655 kg
Designed for 120/140mm rotors with flat mount brakes
No V-brake mounts
TOP TUBE / CHAINSTAY LENGTH
Pro: 20.5" TT / 13.9" CS (Minimum)
Pro L: 20.9" TT / 13.9" CS (Minimum)
Pro XL: 21.25" TT / 14.5" CS (Minimum)
Pro XXL: 21.75" TT / 14.8" CS (Minimum)
Pro XXXL: 22.25" TT / 14.8" CS (Minimum)
Pro XXXXL: 22.5" TT / 15.2" CS (Minimum)
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