WTP Swamp Master 20-inch full-suspension BMX bike, 21.5-inch TT — choose a setup around your riding:

Key features

• Top tube length (TT / A): 21.5 in
• Wheel size: 20 x 2.6 in
• Frame: WTP Swamp Master, full 4130 chromoly
• Fork: Manitou Machete J-UNIT Expert, air sprung, 100 mm travel; 15 x 110 mm Boost thru-axle
• Cranks: WTP Logic, three-piece 4130 chromoly, 175 mm arms, 22 mm axle
• Weight: 14.5 kg

The Swamp Master brings suspension to a 20-inch BMX setup. A 100 mm air fork and RockShox Monarch RL rear shock give you suspension at both ends, with hydraulic disc brakes front and rear to manage speed.

BMX dimensions with suspension

The full 4130 chromoly frame has a 21.5-inch top tube and 14.1–14.8-inch chainstay range. It combines BMX components such as WTP Logic cranks and a Pivotal saddle with a Manitou fork and Kenda Kaos 20 x 2.6-inch tyres.

Set the fork and shock for the rider according to their instructions before riding. Suspension adds setup and service requirements: check air pressure, settings, seals and pivots as directed by the component manufacturers.

Check the complete geometry

Compare the 71° head angle, 12.15-inch bottom bracket height and 9.5-inch standover with your usual bike. The bars have an 8-inch rise and 29.15-inch width. Choose terrain and features that suit your ability and the bike’s intended use.

WTP Swamp Master 20-inch full-suspension BMX bike, 21.5-inch TT — specifications:

Frame geometry:

• Top tube length (TT / A): 21.5 in
• Chainstay length (CS / B): 14.1–14.8 in
• Head tube angle (HA / C): 71°
• Seat tube angle (SA / D): 70°
• Bottom bracket height (BB / E): 12.15 in
• Standover height (SO / F): 9.5 in

Sizing, weight and other details:

• Wheel size: 20 x 2.6 in
• Weight: 14.5 kg

Frame:

• Frame: WTP Swamp Master, full 4130 chromoly

Fork:

• Fork: Manitou Machete J-UNIT Expert, air sprung, 100 mm travel; 15 x 110 mm Boost thru-axle

Cranks:

• Cranks: WTP Logic, three-piece 4130 chromoly, 175 mm arms, 22 mm axle

Rear suspension:

• Rear shock: RockShox Monarch RL, 152 x 31 mm

Handlebars:

• Handlebar: WTP Swamp Master, 4130 chromoly; 8 in rise (G), 29.15 in width (H); backsweep: 11°; upsweep: 2.5°

Stem:

• Stem: Eclat Burns, CNC aluminium, top load

Headset:

• Headset: WTP Compact, integrated, cartridge bearings

Wheels and rims:

• Rims: Eclat Bondi, 20 in, 36H, 38 mm wide, double wall

Tyres:

• Tyres: Kenda Kaos, 20 x 2.6 in

Chainring or sprocket:

• Sprocket: WTP Patrol, CNC aluminium, 28T

Bottom bracket:

• Bottom bracket: WTP Compact, press fit, 22 mm axle, cartridge bearings

Front hub:

• Front hub: Eclat Exile Disc, Boost 110 mm, 15 mm thru-axle, 36H, cartridge bearings

Rear hub and driver:

• Rear hub: Eclat Exile Disc cassette, 3/8 in female bolts, 36H, cartridge bearings, 120 points of engagement
• Driver: One-piece cassette driver, cartridge bearings, six pawls, 120 points of engagement

Brakes and controls:

• Brakes: Bengal Ares 3 hydraulic disc brakes, front and rear; 160 mm rotors

Chain:

• Chain: Eclat Diesel

Saddle and seatpost:

• Saddle: Eclat Bios Slim, Pivotal
• Seatpost: WTP Team, aluminium, Pivotal, 200 mm

Pedals:

• Pedals: WTP Logic

Grips and bar ends:

• Grips: Salt EX, 154 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.