Description

There's very few options in the complete race bike segment that offer a brand's full suite of aftermarket parts, let alone offering carbon rims along with carbon forks. Radio's Quartz Carbonic has taken it right up to the custom bike market and disses the notion that you need to spend twice this amount to access a high end frame and components.

Arise is Radio's new component brand and comes out swinging with a solid track record of wins on the board. The Arise hubs have already already proven their reputation here at the shop, being the basis for several wheel builds since being released. The cold-forged Arise cranks will be up for any amount of horsepower to, with a 24mm cromo spindle a well proven component in high end cranks.

The bike is based upon Radio's aftermarket Quartz super-lightweight alloy frame, a x6-time world championship winning frame no less! It features a new sliding disc dropout with flat mount brakes and super stealthy cable routing.

Save yourself thousands on building a ground up custom bike by throwing one of these into your cart. No waiting, straight to your door, or from the showroom to the gate. They look cool as hell, and will no doubt be as fast as hell. Numbers are limited, so hit that add to cart button now.

Features

Carbon fork and carbon rims. An Arise carbon fork with a tapered 1-1/8" to 1.5" steerer and 32mm offset, laced to 36h Arise Solar Pro carbon rims.
Six-time world championship alloy frame. The Quartz Disc frame is hydroformed 6061-T6 aluminium with a tapered head tube, sliding forged dropouts, internal chain tensioners and internal cable routing.
Arise hydraulic flat-mount disc brake. A 120mm rotor with a lever you can flip for left or right hand.
Sealed bearings throughout the bike. Arise Echo hubs run fully sealed on 36 holes, with a high-engagement 6-pawl cassette and a 15mm rear thru axle.
Cold forged Arise Argon cranks. 175mm arms on a 24mm spindle driving a 44T alloy Pro sprocket, a KMC Z1eHX chain and a 16T sealed cassette.

Specifications

Size: Pro L, 20" wheels
Frame: Radio Raceline Quartz Disc, lightweight hydroformed 6061-T6 alloy, tapered head tube, sliding forged dropouts with internal chain tensioners, flat mount disc brake, internal cable routing
Top tube: 20.9"
Fork: Arise carbon, 1-1/8" to 1.5" tapered steerer, 32mm offset
Headset: Radio Raceline Pro integrated, sealed, threadless, 1-1/8" to 1.5"
Stem: Arise Neon Pro toploader, 54mm extension, CNC machined, alloy
Bars: Radio Raceline Neon Pro 7.5" hydroformed, multiple butted and heat-treated chromoly
Grips: Radio Raceline Xenon, diamond knurling, clamp-on, 139mm
Brakes: Arise Xenon hydraulic flat-mount disc, 120mm rotor
Brake lever: Arise Xenon, left or right hand flippable
Cranks: Arise Argon 2-piece, cold forged and CNC, alloy, 175mm, 24mm spindle
Bottom bracket: Radio Raceline BSA 24 set, external bearing cups, CNC machined, sealed
Sprocket: Arise Pro, alloy, 44T, with alloy chainring bolts
Chain: KMC Z1eHX, 1/2" x 3/32"
Pedals: Radio Raceline Xenon Slim, alloy
Front hub: Arise Echo, CNC alloy, fully sealed, 36h
Rear hub: Arise Echo, CNC alloy, fully sealed, 36h, disc brake cassette, 6 pawl, 15mm thru axle
Rear cog: 16T, 1/2" x 3/32", sealed cassette
Spokes: Steel
Rims: Arise Solar Pro Carbon, 36h, front and rear
Tyres: Tioga Fastr-X, front: 20" x 1.75", rear: 20" x 1.6"
Seat: Radio Raceline seat and seat post combo
Seat clamp: Arise
Gearing: 44T sprocket, 16T driver

Assembly information

Your race bike ships mostly assembled in the box. Finishing it takes most people 10 to 20 minutes with basic tools, and the video above walks through every step.

Fit the handlebars and line them up with the front wheel
Fit the front wheel, pedals and seat post
Spin the rear wheel and check the rotor runs clear of the calliper
Check the brake and tyre pressure before the first ride

Disc brakes: keep your fingers off the rotor and pads, because oil from your skin contaminates the braking surface and takes the bite away. If the rotor rubs, loosen the two calliper bolts, squeeze the lever, then tighten them again with the lever held on. Bed the brake in with a few firm stops before you race it.

Tools: Allen key set and a 15mm spanner for the pedals. Check your axle hardware, since race bikes vary between bolt-on nuts and a thru-axle.

Rather have it done? Ask us about extra assembly before you order, or any local bike shop can finish the build for a small fee.

Radio Quartz Carbonic Pro L Bike (2026)

Name: Radio Quartz Carbonic Pro L Bike (2026)
Brand: Radio Raceline
SKU: RABK254-26-SIL
Price: 3499.99 AUD
Availability: InStock

Brand: Radio Raceline SKU: Click to copy the SKU and show the pick location

$3,499.99 AUD

Or 4 payments of $874.99 AUD with

Colour - Champagne

Top Tube Length - 20.9

Race frames are sized by class, and the class you ride is set by rider height rather than age.

Size	Rider height	Top tube
Micro (18" wheels)	Under 120cm	16.25"
Mini (20" wheels)	110 to 140cm	17 to 18"
Junior	120 to 150cm	18.25 to 18.75"
Expert	130 to 170cm	19.5 to 19.75"
Expert XL	145 to 170cm	20 to 20.75"
Pro	150 to 175cm	20.25 to 20.75"
Pro XL	165 to 180cm	21 to 21.25"
Pro XXL	170 to 185cm and up	21.5 to 21.85"
Pro XXXL	175cm and up	22"
Pro XXXXL	180cm and up	22.5"
Cruiser (24" wheels)	175cm and up	21.5" and up

Heights overlap between classes on purpose. Where you land in two, a growing rider is usually better on the larger, and a rider who wants the bike to turn faster on the smaller. Some brands label the Pro size Pro L, with the same fit.

How to measure

Stand your rider against a wall in the shoes they ride in, heels flat, and mark the top of their head. Measure from the floor to the mark.

Between two sizes and still growing? Take the larger size.
Racing gates and wanting the bike to turn faster? Take the smaller size.
Top tube is the number that actually changes the fit, so compare it against the bike they ride now.

Not sure? Send us their height and we will tell you what we would put them on.

Read the full buying guide