Based upon Radio's headlining aftermarket aluminium Quartz frame, their complete race bike is ready to win straight out of the box. This frame has seen six world championships and is constructed from super-lightweight alloy with no details spared.
Radio's designers took this frame and draped it in only the very best components, creating a full PRO build that will hold its own in any level of competition. This alloy frame is no poor cousin to any carbon frames, it's a legit title contender.
New for 2026, the Quartz Disc frame features the new sliding disc dropouts with flat mount brakes and super stealthy cable routing.
Specs Snapshot:
Top tube length - 21.75"
Head tube angle - 74°
Bottom bracket height - 11.6"
Chain stay length - 15.25"
Seat tube angle - 71°
Bar Spec:
Width - 29"
Rise - 8.5"
Upsweep - 2.5"
Backsweep - 6.5°
Detailed Specs:
| Length | 21.75TT |
| Frame | Radio Raceline Quartz Disc frame, lightweight hydroformed 6061-T6 alloy, tapered headtube, sliding forged dropouts, with int. chain tensioners, flatmount disc brake |
| Fork | Radio Raceline Alloy fork, 20mm offset |
| Headset | Radio Raceline Pro integrated headset, sealed, threadless, 1-1/8" – 1.5" |
| Stem | Arise Neon Pro toploader stem, ext. 54mm, CNC machined, alloy |
| Handlebar | Radio Raceline Neon Pro hydroformed bar, multiple butted & heat-treated cromoly |
| Grips | Radio Raceline Xenon grips, diamond knurling, clamp-on grip, 139mm length |
| Brake | Arise Race brake lever/rear flat-mount disc calliper |
| Crank | Arise Xenon Pro, 2pc crank, cold forged / CNC, alloy, 175mm length, 24mm spindle |
| Chainring | Sprocket - Arise Xenon Pro sprocket PRO XL/XXL 44T. Alloy |
| Chainring Bolts | Alloy |
| Bottom Bracket | Radio Raceline BSA 24 bb set, external bearing cups, CNC machined, sealed |
| Pedals | Radio Raceline Xenon Slim pedal, alloy |
| Chain | KMC Z1eHX chain, 1/2" x 3/32" |
| Front Hub | Arise Bravo front hub, alloy CNC, fully sealed, 36h, 3/8" female crmo axle |
| Rear Hub | Arise Bravo rear hub, alloy CNC, fully sealed, 36h, disc brake cassette, 6 pawl, 3/8" female crmo axle |
| Spokes | Stainless |
| Rear Cog | Radio Raceline driver, 16T, 1/2" - 3/32", sealed cassette |
| Front / Rear Rim | Arise Argon Pro rim, flash welded, 36h, tubeless ready, alloy |
| Tyres | Tioga Fastr tires, front: 20" x 1.75" and rear: 20" x 1.6" |
| Seat / Post | Radio Raceline Seat & Seatpost Combo |
| Seat Clamp | Arise Helium Pro seat clamp, quick-release, alloy |
| Gearing / Ratio | 44x16 / 53.48" |
| Weight | Weight - 9.2kg (Pro) |
