Beta RR 4T 390: history, specs, pictures
| Beta RR 4T 390 | |
| Manufacturer | |
|---|---|
| Production | 2018 |
| Class | Enduro |
| Engine | Single cylinder, 4-stroke, liquid-cooled |
| Bore / Stroke | 88.9mm x 88.9mm |
| Compression ratio | 12.48:1 |
| Fuel System | Synerject dual electronic injection |
| Transmission | Gear box: 6-Speed Final Drive: Chain |
| Suspension | Front: Hydraulic USD fork with 48 mm shaft Rear: Monoshock with progressive compound lever |
| Brakes | Front: Wave disc 260 mm and double-piston floating caliper Rear: Wave disc 240 mm and single-piston floating caliper |
| Front Tire | 90/90 - 21 |
| Rear Tire | 140/80 -18 |
| Wheelbase | 58.7 inches (1491 mm) |
| Length | 85.79 inches (2179 mm) |
| Width | 31.81 inches (808 mm) |
| Seat Height | 37.01 inches (940 mm) |
| Weight | 116.0 kg (wet) |
| Manuals | Service Manual |
The Beta RR 4T 390 was a Single cylinder, 4-stroke, liquid-cooled Enduro motorcycle produced by Beta in 2018.
Engine[edit | edit source]
A 88.9mm bore x 88.9mm stroke result in a displacement of just 385.6 cubic centimeters.
Drive[edit | edit source]
The bike has a 6-Speed transmission. Power was moderated via the Wet multi-disc.
Chassis[edit | edit source]
It came with a 90/90 - 21 front tire and a 140/80 -18 rear tire. Stopping was achieved via Wave disc 260 mm and double-piston floating caliper in the front and a Wave disc 240 mm and single-piston floating caliper in the rear. The front suspension was a Hydraulic USD fork with 48 mm shaft while the rear was equipped with a Monoshock with progressive compound lever. The wheelbase was 58.7 inches (1491 mm) long.
2018 Beta RR 4T 390[edit | edit source]
The 2018 Beta RR 390 comes with the new chassis. The front-end has been completely redesigned enabling an increase in the flexural and torsional rigidity characteristics compared to previous versions and with a notable reduction in weight thanks to an improved structural layout. This generates a consistent improvement in handling and riding precision.