Cult Gateway 2026 20-inch BMX bike, 20.5-inch TT — compare the fit for your next sessions:

Key features

• Suggested rider height: Over approx. 160 cm
• Top tube length (TT / A): 20.5 in
• Wheel size: 20 x 2.4 in
• Cranks: Three-piece chromoly, 170 mm
• Bar: 9 in rise (G), 30 in width (H)
• Weight: 11.4 kg

The Cult Gateway pairs a 20.5-inch top tube with 20-inch wheels and three-piece 170 mm chromoly cranks. The frame uses chromoly in the head tube, top tube and down tube, with Hi-Ten elsewhere.

Sealed hubs already fitted

Both hubs have sealed cartridge bearings to help keep dirt out. The rear hub uses a 9T cassette driver, paired with a 25T sprocket. The wheels and drivetrain still need regular checks and servicing.

A rear aluminium U-brake lets you manage speed during practice. Nylon pedals, 170 mm grips and a Combo saddle complete the contact points, so you can prepare the bike as a complete setup.

Compare the frame fit

The suggested rider height is above approximately 160 cm. Compare the 20.5-inch top tube, 13.65-inch chainstays and 30-inch bar width with your proportions and a position you know. The wheels measure 20 inches; TT refers to the frame’s top tube length.

Cult Gateway 2026 20-inch BMX bike, 20.5-inch TT — specifications:

Sizing, weight and other details:

• Suggested rider height: Over approx. 160 cm
• Wheel size: 20 x 2.4 in
• Weight: 11.4 kg
• Rider level: Beginner to intermediate

Frame geometry:

• Top tube length (TT / A): 20.5 in
• Chainstay length (CS / B): 13.65 in
• Head tube angle (HA / C): 75°

Cranks:

• Cranks: Three-piece chromoly, 170 mm

Handlebars:

• Bar: 9 in rise (G), 30 in width (H)
• Handlebar: 9 in rise, 30 in width

Frame:

• Frame: Cult Gateway, 4130 chromoly head tube, top tube and down tube; remaining tubing: 1020 Hi-Ten

Fork:

• Fork: Hi-Ten steel

Stem:

• Stem: Aluminium, top load

Wheels and rims:

• Rims: 20 in, 36H

Tyres:

• Tyres: 20 x 2.4 in

Bottom bracket:

• Bottom bracket: Mid BB, 19 mm

Chainring or sprocket:

• Sprocket: 25T

Rear hub and driver:

• Driver: 9T
• Rear hub: Cassette, sealed cartridge bearings

Chain:

• Chain: Cult 410

Front hub:

• Front hub: Sealed cartridge bearings

Brakes and controls:

• Rear brake: Aluminium U-brake

Saddle and seatpost:

• Saddle and seatpost: Combo
• Seat clamp: Integrated

Pedals:

• Pedals: Nylon

Grips and bar ends:

• Grips: 170 mm

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 SO is standover height. On the handlebar drawing, G marks height and H marks width.