2011
GRC Moto Midimoto RR.04 - Specifications & Review

Article Complete Info
| Articleid | 965831 |
|---|---|
| Category | Minibike-sport |
| Make | GRC Moto |
| Model | Midimoto RR.04 |
| Year | 2011 |
Chassis, Suspension, Brakes & Wheels
| Frontbrakes | Single disc. Floating disk |
|---|---|
| Frontbrakesdiameter | 145 mm (5.7 inches) |
| Fronttyre | 90/65-6.5 |
| Rearbrakes | Single disc |
| Rearbrakesdiameter | 120 mm (4.7 inches) |
| Reartyre | 110/50-6.5 |
Engine & Transmission
| Borexstroke | 36.0 x 39.0 mm (1.4 x 1.5 inches) |
|---|---|
| Compression | 14.0:1 |
| Coolingsystem | Air |
| Displacement | 39.65 ccm (2.42 cubic inches) |
| Enginedetails | Single cylinder, two-stroke |
| Enginetype | Polini engine |
| Fuelsystem | Carburettor. SHA 14-14 |
| Ignition | electronic |
| Lubricationsystem | 2% mixture |
| Power | 4.20 HP (3.1 kW)) |
| Transmissiontypefinaldrive | Chain |
Other Specifications
| Comments | Italian pocket bike. |
|---|
Physical Measures & Capacities
| Fuelcapacity | 1.50 litres (0.40 gallons) |
|---|
About GRC Moto
Country of Origin:
Italy
Founder:
Italian mini-GP engineering team (founding leadership not widely publicized)
Best Known For:
MiniGP and pocket-race bikes used for youth development and kart-track training
Company History
GRC Moto specializes in serious small-scale race machines—mini-GP bikes and pocket racers that teach throttle control, body position, and line choice at kart tracks for a fraction of big-bike costs. Built with proper geometry, quality forks and brakes, and crisp engines (or increasingly, electric powertrains), GRC platforms are staples in European youth series that feed national and world championships. The bikes are robust enough for repeated crashes and quick to service between sessions, letting coaches focus on rider skill rather than wrenching. As MotoGP and national federations formalized MiniGP ladders, GRC’s role expanded, supplying spec series and evolving hardware to match modern safety and performance standards. Historically, GRC exemplifies Italy’s contribution to rider development: beautiful, functional kit that turns youngsters into racers and gives adults a high-rep tool for honing craft. Its impact isn’t measured in showroom counts but in the smoothness of future champions who first learned to trust a front tire on a GRC.
