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ENDURO - RR Race 390 4T
RR Race 390 4T
The 390 4T single-cylinder engine has been remapped to deliver more linear and usable power across the entire rev range. Its distinctive feature is its ability to transfer power to the ground with continuity, ensuring stability and control even on the most treacherous surfaces such as mud, technical climbs or slippery terrain, thanks to the excellent torque values delivered even at low revs.
| Displacement | Bore x stroke | Seat height | Dry weight |
|---|---|---|---|
| 385,6 cc | 88 x 63,4 mm | 950 mm | 107,5 kg |
ENGINE
Traction and smoothness
The 390 4T single-cylinder engine has been remapped to deliver more linear and usable power across the entire rev range. Its distinctive feature is its ability to transfer power to the ground with continuity, ensuring stability and control even on the most treacherous surfaces such as mud, technical climbs or slippery terrain, thanks to the excellent torque values delivered even at low revs.
Total balance on any terrain
The 390 is designed to always offer the right mix of handling and power. Kayaba racing suspension, compact vehicle and new maps make riding smooth and intuitive. Stability, safety and immediate confidence make the 390 the perfect companion for those who want to pick up the pace without sacrificing control.
In Detail
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Compact and lightweight frame
The molybdenum steel frame with micro-cast integrated into the headstock ensures rigidity and stability, keeping the bike light and easy to handle even in the tightest and most technical sections.
Kayaba AOS fork
Kayaba AOS closed cartridge fork, ø 48 mm has anodised internal parts and specific treatments that minimise friction. Compression and rebound adjustments allow you to always find the ideal setting.
Front wheel axle
Red anodised quick release front axle: essential for replacing the wheel in a matter of seconds and gaining precious seconds in the race.
Kayaba C46 RCU Mono
Fully customisable monoshock with external compression (high and low speed) and rebound adjustments. A benchmark for consistent performance and traction even in the most demanding conditions.
Ergal footpegs
Ergal racing footpegs with interchangeable steel pins. Narrower to facilitate foot movement, they offer superior grip for maximum control and feel with the bike.
Chain tensioners in red Ergal alloy
Anodised Ergal chain tensioner: lightweight, stable and reliable, it guarantees constant chain tension and greater reliability in enduro competitions.
Racing design
An aggressive and unmistakable look: the dedicated livery enhances the Race character with bold lines and exclusive colours, recalling the factory soul of Beta and making you stand out on the track.
HANDLEBAR MAP SWITCH
The map switch button located on the handlebar allows you to select two engine maps: Full Power, which offers all the power and responsiveness of the engine, and Soft, which softens the power delivery, making it more manageable on slippery surfaces or when greater traction is needed. The same button is also used to select the level of Traction Control intervention.
Gallery Collection
Technical Specifications
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CHASSIS
▼| FRAME | Molybdenum steel with double cradle split above the exhaust port |
| WHEELBASE | 1476 mm |
| MAX LENGHT | 2180 mm |
| MAX WIDTH | 830 mm |
| MAX HEIGHT | 1275 mm |
| SEAT HEIGHT | 950 mm |
| GROUND CLEARANCE | 335 mm |
| FOOTREST HEIGHT | 427 mm |
| DRY WEIGHT | 107,5 kg (front 52,7 kg; rear 54,8 kg) |
| FUEL TANK CAPACITY | 9,0 l |
| RESERVE | 2,3 l |
| COOLING SYSTEM CAPACITY | 1,4 l |
| FRONT SUSPENSION | Hydraulic usd fork with Ø 48 mm shaft |
| REAR SUSPENSION | Monoshock with progressive compound lever |
| SHOCK ABSORBER STROKE | 130 mm |
| FRONT WHEEL TRAVEL | 300 mm |
| rear WHEEL TRAVEL | 287 mm |
| FRONT BRAKE | Wave disc Ø260 mm and double-piston floating caliper |
| rear brake | Wave disc Ø240 mm and single-piston floating caliper |
| front rim | 21 x 1,6 – 36 holes |
| rear rim | 18 x 1,85 – 36 holes |
| front tyre | 90/90 – 21 |
| rear tyre | 140/80 -18 |
ENGINE
▼| type | Single cylinder, 4-stroke, liquid-cooled |
| bore | 88 mm |
| stroke | 63,4 mm |
| displacement | 385,6 cc |
| compression ratio | 12,48:1 |
| valve train | Dohc finger follower / 4 titanium valve |
| starter | Electric |
| acg | Kokusan |
| spark plug | NGK LKAR 8A-9 |
| lubrication | 2 oil pumps |
| fuel system | Elldor dual electronic injection |
| throttle body | Ø 42 mm – Synerject |
| clutch | Wet multi-disc clutch |
| primary drive | Z.23/76 |
| transmission | 6 gears |
| FINAL TRANSMISSION | Chain |
| engine oil | SAE 10W/50 0,8 l. + SAE 10W/40 0,8 l. |
| consumption l/100km | 3,3 |
| pollution Co2 [g/km] | 79 |