Product arrived quickly, was well packed, and works as described. A positive experience.
Vintage GT Mach One 4130 Chromoly BMX Race Bike
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Browse available bikesTraveling Ground Certified
- Frame integrity verified
- Components inspected & cleaned
- Parts replaced as needed
- Drivetrain cleaned & tuned
- Wheels trued
- Suspension tuned & dialed
We're a mission-driven bike shop based in Colorado. Every sale helps refurbish and donate bikes to those in need through Bicycles for Humanity Colorado. Each item has been professionally inspected, thoroughly cleaned, carefully refurbished, and is ready for immediate use.
The GT Mach One is a classic BMX race bike built on a full 4130 chromoly steel frame and fork — the same high-tensile alloy used in aerospace tubing — giving it a lively, responsive ride that's noticeably lighter and stiffer than hi-ten steel entry-level bikes. The polished chrome finish is iconic GT racing livery, complemented by bold red and yellow 'GT Racing' wing graphics and a 'World Champions' roundel decal that speaks to GT's dominant BMX pedigree. The drivetrain runs a GT-branded 4-arm alloy crankset with a 44T black anodized chainring and KMC chain to a single-speed freewheel rear, which is exactly what you want on a race or park bike. Braking is handled by a rear U-brake (red hardware) with a front brake cable run — clean, minimal, and race-appropriate. Chrome GT rims are laced to unsealed hubs with Kenda/JAAPRO Race Compound knobby tires. The cockpit sports a classic two-piece riser bar setup with a threaded stem, black GT seatpost, and GT-branded saddle. The saddle shows minor wear at the nose, and the drivetrain has light surface patina consistent with casual use, but the chrome frame and fork remain bright and structurally sound. This is a standout collector-grade or ready-to-ride BMX that will appeal to nostalgic riders, collectors, or anyone wanting a legitimate race-bred BMX.
| Condition | Great - Light Signs Of Use |
| Condition Notes | Chrome frame and fork present in great condition — bright and clean with only minor surface marks and very light scuffs consistent with normal use. No dents, cracks, or structural damage observed. GT Racing decals are intact and vivid. Saddle shows minor wear/cracking at the nose tip. Drivetrain (chain, chainring, crankset) shows light surface patina and minor grime. Rims are straight and bright. Brake hardware is functional with red caliper showing normal use. Overall a clean, solid example ready to ride. |
| Discipline | Mountain |
| Brand Compatibility | Universal |
| Speed Compatibility | 1x |
| Material | Steel |
| Make | GT |
| Model | Mach One |
| Suspension Type | Rigid |
| Brake Standard | Rim Brake (direct mount) |
| Tire Type | Clincher |
| Crankset | GT 4-Arm Alloy Crankset W/ 44T Black Anodized Chainring |
| Cassette | Single Speed Freewheel |
| Chain | KMC |
| Brakes | GT U-Brake Rear, Front Brake Caliper |
| Wheelset | GT Chrome Rims, 36-Spoke |
| Tires | AAPRO Race Compound Knobby 20" |
| Handlebar | GT Two-Piece Riser Bar |
| Stem | GT Threaded Stem |
| Seatpost | GT Black Alloy Seatpost |
| Saddle | GT BMX Saddle |
| Front Fork | GT 4130 Chromoly Fork |
| Condition Notes | Chrome frame and fork present in great condition — bright and clean with only minor surface marks and very light scuffs consistent with normal use. No dents, cracks, or structural damage observed. GT Racing decals are intact and vivid. Saddle shows minor wear/cracking at the nose tip. Drivetrain (chain, chainring, crankset) shows light surface patina and minor grime. Rims are straight and bright. Brake hardware is functional with red caliper showing normal use. Overall a clean, solid example ready to ride. |
Every item from Traveling Ground is fully refurbished, professionally inspected, and ships next business day.
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