The Fit Bike Co PRK 20 Inch Bike, a maroon BMX park bike with a short top tube, black tires, black seat, and handlebars, is displayed on a white background.

The Fit Bike Co PRK 20 Inch Bike is a blue BMX park bike featuring a short top tube, black tires, silver spokes, black handlebars, and red brake cables, shown on a white background.

Close-up of the Fit Bike Co PRK 20 Inch Bike, highlighting its maroon frame, headset, stem, brake cables with gyro for barspins, and part of the handlebar.

Close-up of the Fit Bike Co PRK 20 Inch Bike’s blue handlebars, headset, and stem with red cables, a gyro for barspins, and a geometric red decal on the short top tube.

Close-up of a crankset, chainring, and black pedal on a blue Fit Bike Co PRK 20 Inch BMX with "FITBIKECO" text and a short top tube.

Description

This solid bike is built for shorter riders who want to ride skateparks. Tight geometry, gyro for barspinds, low standover and a short top tube makes this beast an absolute ripper!

The PRK model from FIT starts with a dedicated frame and fork built specifically for transition park riding. Designed with a slightly shorter 12.6” rear end, a lower 7.25” standover height, and a more relaxed 75.3° head angle than FIT’s all-around S1 geometry, the PRK delivers enhanced control and flow in park settings.

The custom PRK fork features a responsive 25mm offset, peg clearance cutouts, and a longer 172mm steerer tube to allow for Gyro compatibility. Riders can choose between two top tube lengths—20” and 20.5”—each paired with size-specific 8.7” bars and cranks (160mm and 165mm, respectively) for optimal fit and feel.

With features like Pivotal seat, alloy sprocket, and double-wall rear wheel, the PRK is a purpose-built machine, ready for the great indoors or anywhere else a responsive, dialled-in bike is needed to push the limits.

Specifications
Frame: Cro-Mo Front Tri
Geometry: Park w/12.6” CS 75.3° HA
Headset: Integrated w/Gyro Holes
BB: Sealed Mid
Bars: 2-Piece 8.7” x 29”
Fork: Cro-Mo Steerer, Tapered Legs w/ Peg Cut, 25mm Offset, Welded Insert
Stem: FIT Top Load
Seat: FIT Pivotal Seat/200mm Post
Cranks: Tubular Cro-Mo. 20"TT 160mm, 20.5TT 165mm
Sprocket: FIT Alloy Key 25T
Pedals: FIT PC
Front Wheel: FIT S1W Rim w/Sealed Hub
Rear Wheel: FIT Double Wall w/Sealed 9T Cassette
Tyres: FIT OEM 2.4”
Brakes: U-Brake w/Low Tension Springs, Two Finger Lever, Linear Cable
Misc: Gyro, Longer 172mm Steerer Tube