14 August. Friday 2026
Beta RR Racing 4T 390 - 2024 Specifications and Reviews
The 2024 Beta RR Racing 4T 390 is a modern enduro bike engineered for serious off-road competitors seeking lightweight performance and reliability. Its 385cc liquid-cooled four-stroke engine features advanced tech including titanium valves, dual electronic injection, and a 12.4:1 compression ratio for aggressive trail capability. Designed for experienced riders tackling technical terrain, it excels in competitive enduro racing and demanding backcountry adventures.
General information | |
| Type | Enduro / offroad |
| Year of manufacture | 2024 |
| Model | Beta RR Racing 4T 390 |
Engine and Transmission Specifications | |
| Greenhouse gases | 90.2 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel consumption | 3.89 litres/100 km (25.7 km/l or 60.47 mpg) |
| Clutch | Wet multi-disc |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | 2 oil pumps |
| Ignition | Kokusan |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. Synerject dual electronic injection |
| Valves per cylinder | 4 |
| Bore x stroke | 88.0 x 63.4 mm (3.5 x 2.5 inches) |
| Compression | 12.4:1 |
| Engine details | Titanium valves |
| Type of engine | Single cylinder, four-stroke |
| Capacity: | 385.1 ccm (23.50 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Single disc. 1-piston calipers |
| Diameter | 255 mm (10.0 inches) |
| Front brakes | Single disc. 2-piston calipers |
| Rear tire | 140/80-18 |
| Front tire | 90/90-21 |
| Rear wheel travel | 290 mm (11.4 inches) |
| Rear suspension | KYB monoshock with progressive compound lever |
| Front wheel travel | 295 mm (11.6 inches) |
| Front suspension | KYB hydraulic USD fork with 48mm shaft |
| Frame type | Molybdenum steel with double cradle split above the exhaust port |
| | |
Physical measures and capacities | |
| Reserve fuel capacity | 2.30 litres (0.61 US gallons) |
| Fuel capacity | 9.00 litres (2.38 US gallons) |
| Wheelbase | 1490 mm (58.7 inches) |
| Ground clearance | 320 mm (12.6 inches) |
| Overall width | 815 mm (32.1 inches) |
| Overall length | 2180 mm (85.8 inches) |
| Overall height | 1270 mm (50.0 inches) |
| Seat height | 940 mm (37.0 inches) If adjustable, lowest setting. |
| Dry weight | 107.5 kg (237.0 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Update specs | |
| Comments | Traction control. |
| Starter | Electric |
| Color options | Red/blue/white |
Performance Profile & Rider Fit
Best For
Track20%
City25%
Cornering70%
Daily Riding20%
Touring20%
Passenger5%
Rider Profile
| Best For | This is a competition-focused enduro machine best suited to riders with genuine off-road skill and experience, not newcomers to dirt riding. |
| Purpose | Built purely for serious enduro racing and technical trail riding, with no concession to street comfort or long-distance touring. |
| Rider Fit | Its extremely light dry weight and tall 950mm seat height demand an agile, fit rider comfortable standing on pegs and manhandling the bike over rough terrain. |
| Character | A razor-sharp, high-revving single-cylinder enduro weapon with premium KYB suspension and titanium valves, designed to attack trails and technical sections with minimal weight and maximum control. |
| Not Ideal For | This bike is not for riders seeking a comfortable commuter, a passenger-friendly ride, or a relaxed long-distance tourer. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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