Mafiabikes Kush2 20-inch BMX bike, 20.4-inch TT — a complete setup for learning freestyle:

Key features

• Suggested rider height: Approx. 150 cm and taller
• Top tube length (TT / A): 20.4 in
• Wheel size: 20 x 2.4 in
• Cranks: Forged reinforced one-piece
• Weight: 11.79 kg
• Rider level: Beginner

The Mafiabikes Kush2 combines a 20.4-inch top tube with 20-inch wheels in a complete BMX for getting started. Lucky 6 grips, VP plastic pedals and a FAT vinyl-covered saddle provide the contact points, with a rear U-brake for managing speed.

Compare the frame with your stance

The suggested rider height starts at approximately 150 cm. Check reach and body proportions too: the 20.4-inch TT is the top tube length, separate from the wheel size. The chainstays measure 13.25 inches, and the bars are 9 inches high and 29.5 inches wide.

A straightforward drivetrain

A one-piece crank and USA bottom bracket are paired with a 25T sprocket and 9T rear gearing. The rear aluminium rim has a double-wall construction, while the front is single wall. LAGOS Crawler tyres measure 20 x 2.4 inches. Keep the crank adjustment, wheels and braking system checked as you practise.

Mafiabikes Kush2 20-inch BMX bike, 20.4-inch TT — specifications:

Sizing, weight and other details:

• Suggested rider height: Approx. 150 cm and taller
• Wheel size: 20 x 2.4 in
• Weight: 11.79 kg
• Rider level: Beginner

Frame geometry:

• Top tube length (TT / A): 20.4 in
• Chainstay length (CS / B): 13.25 in
• Head tube angle (HA / C): 75.5°
• Seat tube angle (SA / D): 71°
• Bottom bracket height (BB / E): 11.75 in
• Seat tube height (F, bottom bracket centre to top of seat tube): 9.5 in

Cranks:

• Cranks: Forged reinforced one-piece

Frame:

• Frame: Hi-Ten steel, 14 mm dropouts, integrated seat clamp

Fork:

• Fork: Hi-Ten steel, butted walls

Handlebars:

• Handlebar: Hi-Ten steel; height (G): 9 in; width (H): 29.5 in

Stem:

• Stem: Forged aluminium, front load

Wheels and rims:

• Front rim: Aluminium, single wall
• Rear rim: Aluminium, double wall

Tyres:

• Tyres: LAGOS Crawler, 20 x 2.4 in

Bottom bracket:

• Bottom bracket: USA BB

Chainring or sprocket:

• Sprocket: 25T

Drivetrain:

• Rear gearing: 9T

Chain:

• Chain: KMC

Brakes and controls:

• Rear brake: U-brake

Saddle and seatpost:

• Saddle: One-piece FAT, vinyl cover

Pedals:

• Pedals: VP, plastic

Grips and bar ends:

• Grips: Lucky 6

Safety while riding

Freestyle BMX riding puts high loads through the bike during tricks, jumps and landings. No bike is indestructible: parts can wear out or become damaged. Check the frame, fork, bars, wheels, axles, cranks, pedals, brakes and bolted connections before every ride. Inspect the bike after a hard impact and stop riding if you find looseness, cracks or damage. Have any problem checked and repaired before riding again.

Wear a properly fitted helmet and suitable protective pads. Read our important information before buying and riding a BMX bike for assembly, servicing and riding checks.

Important information about your new bike

• Read the instructions and warranty supplied with the bike before riding.
• The bike is delivered approximately 90% assembled for shipping.
• Before the first ride, fit the pedals, saddle and handlebars, and the front wheel where required. Follow the assembly instructions and check all components.
• Have a professional bike workshop carry out a pre-ride inspection. This is a paid service; keep the receipt as proof for the manufacturer’s warranty and follow the warranty terms supplied with your bike.

The manufacturer’s warranty is separate from your statutory consumer rights. Continue to inspect and service the bike throughout its use.

Frame geometry diagram

Use the letters in the specification to identify each measurement. TT is top tube length, CS is chainstay length, HA is head tube angle, SA is seat tube angle, BB is bottom bracket height and F is measured from the bottom bracket centre to the top of the seat tube. On the handlebar drawing, G marks bar rise and H marks bar width.