Quartz Pro L Complete Bike

Built around our six-time World Championship-winning Quartz frame, the Quartz Pro L represents the pinnacle of our BMX race range. This super-lightweight alloy chassis is paired with a no-compromise Pro-level specification, bringing together the very best components we've developed to create a bike built for one thing—winning races. Featuring our Solar Carbon fork, Argon rims, Bravo hubs, and the latest hydraulic disc brake system, the Quartz Pro L delivers elite-level performance straight out of the box. Fast, responsive, and race-proven, it's a bike designed for riders chasing podium finishes. The latest Quartz Disc frame introduces sliding disc dropouts with flat-mount brake compatibility, alongside clean internal cable routing for a refined, race-focused finish. Developed through championship success and engineered for modern BMX racing, the Quartz Pro L is ready to perform when it matters most. FRAME: RADIO RACELINE "QUARTZ DISC" frame, lightweight hydroformed 6061-T6 alloy, tapered headtube, sliding forged dropouts, with int. chaintensioners, flatmount disc brake FORK: ARISE "QUARTZ PRO" fork, 1-1/8" - 1.5" tapered steerer, 31mm offset, inc. 10mm adaptors HANDLEBAR: RADIO RACELINE "NEON PRO 7.5" hydroformed bar, multiple butted & heattreated crmo GRIPS: RADIO RACELINE "XENON" grips, diamond knurling, clamp on grip, 139mm length STEM: ARISE "NEON PRO" toploader stem, ext. 53mm, cold forged/cnc alloy HEADSET: RADIO RACELINE "PRO" integrated headset, sealed, threadless, 1-1/8" - 1.5" BRAKE LEVER: ARISE "XENON" disc brakelever BRAKE: ARISE "XENON" hydraulic disc brake, 120mm rotor, rear, flatmount CRANK: ARISE "XENON PRO" 2pc crank, cold forged/cnc, alloy, 175mm length, 24mm spindle BB: RADIO RACELINE "BSA24" bb set, external bearing cups, cnc machined, sealed PEDALS: RADIO RACELINE "XENON SLIM" pedal, alloy CHAIN: KMC "Z1eHX" chain, 1/2" x 3/32" SPROCKET: ARISE "XENON PRO" sprocket, 43T, alloy DRIVER: RADIO RACELINE driver, 16T, 1/2"- 3/32", sealed cassette 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 FRONT RIM: ARISE "ARGON PRO" rim, flash welded, 32 / 36h, tubeless ready, alloy REAR RIM: ARISE "ARGON PRO" rim, flash welded, 32 / 36h, tubeless ready, alloy SEAT: RADIO RACELINE Seat- & Seatpost Combo SEAT CLAMP: ARISE "XENON" seat clamp, quick-release, alloy TIRES: TIOGA "FASTR" tires, front: 20" x 1.75" and rear: 20" x 1.6" Weight: 8.7kg / 19.18lbs Frame Geometry: Top Tube Length 20.9" Chain Stay Length 14.25" Head Tube Angle 74° Seat Tube Angle 71° Bottom Bracket Height 11.6" Handlebar Geometry: Rise 7.5" Width 28" Backsweep 6.5° Upsweep 2.5°