Radio Race Quartz Carbonic Pro XXL 20" Complete BMX Bike
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Radio Race Quartz Carbonic Pro XXL 20" Complete BMX Bike

£2,449.00 £2,449.00
Colour Champagne Silver
Top Tube Length 21.75"

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About this product

Radio Race QUARTZ CARBONIC PRO XXL is a 20-inch BMX race bike built around a lightweight hydroformed 6061-T6 aluminium frame with tapered head tube, sliding forged dropouts, and flatmount disc brake compatibility. It uses a full carbon fork with tapered steerer and a sealed bearing cassette drivetrain system. The XXL configuration is intended for the largest riders in the range, paired with race-focused geometry and 24x1.75/1.6" Tioga FASTR tires.

  • Frame: Hydroformed 6061-T6 aluminium, tapered head tube, sliding forged dropouts, integrated chain tensioners, flatmount disc brake mounts
  • Fork: Carbon fork, 1-1/8"–1.5" tapered steerer, 32 mm offset, includes 10 mm adaptors
  • Handlebar: Radio Raceline Neon Pro 7.5", hydroformed, multi-butted heat-treated chromoly
  • Grips: Radio Raceline Xenon, diamond knurling, clamp-on, 139 mm
  • Stem: Arise Neon Pro toploader, CNC machined aluminium, 54 mm extension
  • Headset: Radio Raceline Pro integrated, sealed, 1-1/8"–1.5"
  • Brake lever: Arise Xenon disc brake lever
  • Brake: Arise Xenon disc brake, rear only
  • Crankset: Arise Argon 2-piece, cold forged CNC aluminium, 175 mm, 24 mm spindle
  • Bottom bracket: Radio Raceline BSA 24, external bearing cups, CNC machined, sealed
  • Pedals: Radio Raceline Xenon Slim, aluminium
  • Chain: KMC Z1eHX, 1/2 x 3/32"
  • Sprocket: Radio Raceline Xenon Pro, aluminium, 44T
  • Driver: Radio Raceline cassette driver, 16T, sealed, 1/2 x 3/32"
  • Front hub: Arise Echo, CNC aluminium, sealed, 36H, 3/8" female chromoly axle
  • Rear hub: Arise Echo, CNC aluminium, sealed, 36H, disc brake cassette, 15 mm thru axle
  • Rims: Arise Solar Pro Carbon, 36H carbon
  • Seat: Radio Raceline Seat & Seatpost combo
  • Seat clamp: Arise Helium Pro, quick-release aluminium
  • Tires: Tioga FASTR 24x1.75/1.6"

Need help choosing a BMX bike or finding the right BMX parts? You’re in the right place.

Visit our Waller BMX Guide for helpful advice on bikes, parts, sizing and compatibility. If you’re still unsure, call or email Waller BMX, or click the chat icon to speak to our knowledgeable BMX team.

In stock at Waller BMX

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Dispatch + delivery

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Ordering several items? We send everything together once all items are ready. The longest dispatch time in your basket applies.

Need an estimate or an alternative? Ask our BMX team →

  • Spend over £75 for free tracked UK delivery.
  • Spend over £249.99 for free next day UK delivery.*

*Excludes larger bikes and certain postcodes.

See our Shipping & Returns page for delivery and return details.

Ordering a larger bike? Read our larger bike delivery information.

For more information about Customs and Duties see our FAQ.

We now have an Estimated Import Costs calculator on our product and cart pages to help you estimate duties. Please be aware unless stated we ship all International Orders using the option DDU (Delivered Duties Unpaid).

For extra information about ordering to outside the UK see here.

Save up to 42% on a new complete bike or parts through a UK Cycle to Work scheme.

We accept major UK vouchers, including Cyclescheme and Green Commute Initiative.

How to order

  1. Choose your bike, parts or custom build.
  2. Request a voucher or certificate through your employer and scheme provider.
  3. Contact Waller BMX, or select Cycle to Work at checkout, to complete your order.

Read our Cycle to Work guide or Green Commute Initiative guide for the details.

Need help with your voucher? Contact our BMX team.

Before you buy

Your next bike. Your questions, answered.

The practical details to help you choose with confidence.

Does my bike arrive assembled?

Bikes arrive in the manufacturer’s box and need final assembly and a safety check before riding. Depending on the model, this may include fitting the front wheel, pedals, handlebars and seat, and setting up the brakes.

Our optional paid assembly service is available for 12″, 14″, 16″, 18″ and 20″ BMX bikes. These arrive approximately 99% assembled. An oversized delivery surcharge applies separately. View bike assembly.

What size BMX bike do I need?

Start with rider height and riding style. On 20″ freestyle BMX bikes, top-tube length matters as well as wheel size. Larger wheelie bikes fit and ride differently.

Read Waller’s BMX sizing guide for a starting point. For wheelie bikes, explore the Waller BMX Guide and ask us if you are between sizes.

Are all bikes delivered for free?

No. Larger bikes are excluded from free UK delivery. Larger-bike delivery is £22.99 for the standard eligible UK service; destination and oversized-parcel surcharges may apply.

Check the delivery charge at checkout and read our large-bike shipping policy. Some destinations need a manual quote, which we confirm before dispatch.

When will my bike arrive?

Check the dispatch estimate for your selected bike and colour above. This is the waiting time before it leaves Waller BMX. Courier delivery time comes after dispatch.

Supplier-stock bikes need time to reach us first. Mixed orders are sent together once everything is ready. Express delivery does not shorten supplier lead times. Contact us before ordering for a birthday or deadline.

What tools will I need to assemble my bike?

It depends on the model. You will typically need suitable Allen keys, a pedal spanner and a pump, but check the manufacturer’s instructions for the exact tools and torque settings. Do not assume assembly tools are included.

A lock, pump and suitable toolkit are useful extras. If you are unsure about assembly or adjustment, use a competent cycle mechanic and have the bike safety checked before riding.

Which bike suits the way I ride?

Choose around the rider’s height, experience and intended use. Freestyle BMX bikes are designed differently from larger wheelie bikes, cruisers and race bikes.

Check the product description and specifications, including wheel size, geometry and brake setup. Tell us the rider’s height, budget and riding style if you would like help choosing.

More for your BMX

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