![GT Mach One Pro 20″ BMX Bike [Black] (2017)](https://www.urbnbike.com/wp-content/uploads/2025/9/1758958724/gt-mach-one-pro-20-bmx-bike-black-2017-1758958728.webp)
A product of dedication and innovation entwined, the Mach One from GT has been designed to perfection, built to suit every need.FEATURES:GT Mach One Race Aluminum FrameGT Power SEries Cro-Mo 3 pc cranksGT Race Steel HandlebarSPECIFICATIONS: Sizes:20" wheel
A product of dedication and innovation entwined, the Mach One from GT has been designed to perfection, built to suit every need.
| Sizes: | 20″ wheel / 20″ top tube |
| Frame: | GT Mach One Race, 6061 AL, Euro BB, Reverse Dropouts, 1-1/8″ Integrated H/T |
| Fork: | GT Mach One Race, 1-1/8″ Steerer, 31.8mm Legs, 3/8″ Dropouts |
| Chain: | KMC Z410 |
| Crankset Chainwheel: | 15 |
| Crank: | GT Power Series Cr-Mo 175mm 3pc, 19mm x 8T Cr-Mo Spindle, GT 36T Steel Sprocket |
| Crank Option 1: | GT Power Series Cr-Mo 175mm 3pc, 19mm x 8T Cr-Mo Spindle, GT 36T Steel Sprocket |
| Bottom Bracket: | Euro Sealed |
| Pedals: | GT Low Profile Platform |
| Rims: | Alloy Single Wall, 20″ 36 Hole (F/R) |
| Tires: | GT Wing, 20″ x 1.75″ (F/R) |
| Hubs: | Steel Body, (F) 28H, 3/8″ Axle, (R) Freewheel, 28H, 3/8″ Axle |
| Spokes: | 14G |
| Nipples: | Steel |
| Brake: | Alloy V-type |
| Brake Levers: | Alloy V-type |
| Handlebar: | GT Race, Steel, 8.25″H x 29″W, 11? Back, 3? Up, 19mm O.D. Cross Bar |
| Stem: | GT Top Load 1-1/8″ Aluminum, 50mm Length |
| Grips: | GT Statement |
| Headset: | 1-1/8″ Integrated Design, 45X45 Degree Sealed Bearings |
| Saddle: | GT Uni Pro padded |
| Seat Post: | AL integrated w/ Saddle, 27.2 x 250mm |
| Seat Clamp: | Alloy, 31.8mm Single Bolt |
| Extras: | N/A |
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