Radio Darko XL 21 TT BMX Bike – Key Features

• Recommended rider height: approximately over 180 cm
• Frame: 21"
• Handlebar: 9" rise / 29.5" width
• Gyro ready
• Weight: 12.15 kg

Looking for a Street BMX Bike?

The Radio Darko XL 20" is a solid, well-designed BMX bike built for street riding.

This model features a Fat Combo seat, a short 13.2" chainstay and geometry designed for technical street riding. The brake system can be completely removed if you prefer a brakeless setup. Extra-long XL grips provide additional comfort, while the distinctive colour options make this bike stand out wherever you ride.

The frame is also ready for Gyro installation, allowing full handlebar rotation without cable tangling.

The Radio Darko is available in two frame sizes: 20.5" and 21".

Radio Bikes is a well-established German BMX brand with more than 20 years of experience designing freestyle BMX bikes. Every model is carefully developed and tested before reaching riders around the world.

Who Is the Radio Darko XL For?

• Recommended for riders approximately 180 cm and taller.
• 21" top tube designed for taller BMX riders.
• Easy assembly with the supplied tools.
• Your new BMX is ready to ride in just a few simple steps.
• Free shipping.

Radio Darko XL 21 TT – Full Technical Specification

Handlebar

*Geometry chart below. 1" = 2.54 cm

• Rise: 9"
• Width: 29.5"
• Radio Darko
• 1020 Hi-Ten steel

Fork

• 1020 Hi-Ten fork legs
• 4130 Cr-Mo steerer tube
• Tapered fork legs
• Radio AM 20"

Stem

• Salt Pro
• Aluminium
• Top Load

Wheels

• Salt Fraction rims
• 20"
• 36H

Tyres

• SaltPlus Burn
• 20" × 2.35"

Headset

• Salt Pro
• Integrated

Crankset

• Radio AM Tubular
• 4130 Cr-Mo
• 3-piece
• 170 mm

Sprocket

• Radio Vision
• 25T

Front Hub

• Radio AM
• 10 mm (3/8") Cr-Mo axle
• 36H

Rear Hub

• Radio AM
• Cassette
• 14 mm Cr-Mo axle
• 36H
• 9T Driver
• Sealed bearings

Bottom Bracket

• MID BB
• Sealed bearings
• 19 mm

Brake

• Brake lever: Radio AM
• Rear brake: Radio AM
• Radio Slic cables
• Aluminium

Chain

• Salt AM
• WZ1

Seat

• Radio Century Fat Combo
• Seat clamp: Radio Slim
• Forged aluminium

Pedals

• Radio Pro
• Nylon / Fibreglass
• 9/16"

Grips

• Radio AM XL
• Flangeless
• 160 mm

Frame

*Geometry chart below. 1" = 2.54 cm

• 4130 Cr-Mo top tube and down tube
• 1020 Hi-Ten steel
• Top Tube (TT): 21"
• Chainstay (CS): 13.2"
• Head Angle (HA): 75°
• Seat Angle (SA): 71°
• Bottom Bracket Height (BB): 11.7"
• Standover Height (SO): 8.9"
• Compatible with a brakeless setup
• Gyro ready

BMX bikes are designed for jumps, tricks and repeated impacts. No freestyle bike is indestructible. Every component can wear out or become damaged during use. Regular inspections and routine maintenance help improve safety and extend the lifespan of your bike.

Important Information About Your New BMX Bike

• Read the warranty information supplied with your bike before your first ride.
• Your BMX bike is delivered approximately 90% assembled.
• Before riding, install the pedals, seat, handlebar and, on some models, the front wheel.
• The manufacturer recommends having the bike inspected by a professional bicycle workshop before the first ride. This paid service is required to maintain the manufacturer's warranty. Keep your service receipt.