2020
Thumpstar MX 50 JR - Specifications & Review
Article Complete Info
| Articleid | 781597 |
|---|---|
| Category | Minibike-cross |
| Make | Thumpstar |
| Model | MX 50 JR |
| Year | 2020 |
Chassis, Suspension, Brakes & Wheels
| Frametype | Central-tube frame with double-cradle |
|---|---|
| Frontbrakes | Single disc. Dual piston hydraulic disc |
| Frontbrakesdiameter | 190 mm (7.5 inches) |
| Frontsuspension | Fastace Adjustable Forks |
| Frontwheeltravel | 205 mm (8.1 inches) |
| Rearbrakes | Single disc. Single piston |
| Rearbrakesdiameter | 180 mm (7.1 inches) |
| Rearsuspension | Fastace Adjustable Shock |
| Rearwheeltravel | 185 mm (7.3 inches) |
| Wheels | Steel Rim |
Engine & Transmission
| Borexstroke | 39.5 x 40.0 mm (1.6 x 1.6 inches) |
|---|---|
| Clutch | Centrifugal |
| Displacement | 49.00 ccm (2.99 cubic inches) |
| Enginedetails | Single cylinder, two-stroke |
| Fuelsystem | Carburettor. Mikuni 19mm |
Other Specifications
| Coloroptions | Green/Black |
|---|---|
| Starter | Kick |
Physical Measures & Capacities
| Dryweight | 41.5 kg (91.5 pounds) |
|---|---|
| Fuelcapacity | 2.30 litres (0.61 gallons) |
| Groundclearance | 252 mm (9.9 inches) |
| Seatheight | 603 mm (23.7 inches) If adjustable, lowest setting. |
About Thumpstar
Country of Origin:
Australia (brand/design); manufacturing via Asia
Founder:
Established by Australian off-road enthusiasts
Best Known For:
Pit bikes, minis, and value off-roaders for training and play
Company History
Thumpstar built a global following with affordable, abuse-tolerant pit bikes and small off-roaders. The appeal is simple: tractable four-stroke singles, rebuildable suspension, and spares stocked by responsive distributors. Parents and track schools use them to teach clutch, braking, and body position; racers use them for cross-training. Iterative improvements to frames, hubs, and looms boosted durability, turning budget playbikes into trusted training tools.