2008
Beta REV 50 - Specifications & Review
Article Complete Info
| Articleid | 660422 |
|---|---|
| Category | Trial |
| Make | Beta |
| Model | REV 50 |
| Year | 2008 |
Chassis, Suspension, Brakes & Wheels
| Frametype | Steel |
|---|---|
| Frontbrakes | Single disc. 2-opposed pistons |
| Frontbrakesdiameter | 175 mm (6.9 inches) |
| Frontsuspension | Hydraulic fork with ø38 mm shaft |
| Fronttyre | 2.50-19 |
| Rearbrakes | Single disc. 2-opposed pistons |
| Rearbrakesdiameter | 150 mm (5.9 inches) |
| Rearsuspension | Monoshock with adjustable spring preload |
| Reartyre | 3.5-17 |
Engine & Transmission
| Borexstroke | 39.5 x 40.8 mm (1.6 x 1.6 inches) |
|---|---|
| Clutch | Wet multi-disc clutch |
| Compression | 14.5:1 |
| Displacement | 49.90 ccm (3.04 cubic inches) |
| Enginedetails | Single cylinder, two-stroke |
| Fuelsystem | Carburettor. Dell´ orto PHBG 21 |
| Gearbox | 6-speed |
| Ignition | AET |
| Lubricationsystem | Mix with fuel 1,5 % (synthetic oil) |
Other Specifications
| Modificationscomparedtopreviousmodel | 2008 Technical Modifications New and more evolved engine with combustion parts and exhaust developed for trials use, with the objective of inspiring more confidence in the very young. 6-speed gearbox designed for trials use engine can be started with the bike in gear, to facilitate starting in all situations water cooling with electric fan to ensure better reliability and consistency of performance exhaust assembly modified to optimise match with the new engine components New ø 21 mm Dell’Orto carburettor Final drive ratio of front/rear sprockets revised and optimised to make full use of the new motor New frame with the same geometry as the larger Rev-80 and high-strength steel construction New shockabsorber to match the bike’s new geometry Completely new exhaust assembly to optimise the performance of the new engine New design of the silencer Hydraulic clutch for greater riding precision New colours and graphics to match the Rev-3 |
|---|
Physical Measures & Capacities
| Dryweight | 60.0 kg (132.3 pounds) |
|---|---|
| Fuelcapacity | 2.50 litres (0.66 gallons) |
| Groundclearance | 300 mm (11.8 inches) |
| Overallheight | 1,070 mm (42.1 inches) |
| Overalllength | 1,850 mm (72.8 inches) |
| Overallwidth | 720 mm (28.3 inches) |
| Reservefuelcapacity | 0.50 litres (0.13 gallons) |
| Seatheight | 620 mm (24.4 inches) If adjustable, lowest setting. |
About Beta
Country of Origin:
Italy
Founder:
Giuseppe Bianchi & Arrigo Tosi (Betamotor S.p.A.)
Best Known For:
Trials and enduro dominance; RR/RS enduros and Evo trials line
Company History
Betamotor began in 1905 building bicycles in Florence and evolved into one of the world’s premier off-road motorcycle makers. The company’s DNA is balance and traction—first in observed trials, where featherweight control and throttle finesse matter, and later in enduro, where day-long reliability meets special-stage speed. Beta’s modern RR/RS enduros are renowned for chassis that communicate clearly, engines with tractable midrange, and suspension valving that works out of the crate for real riders, not just pros. The Evo trials line continues to win at the highest levels, feeding lessons about weight distribution and clutch feel back into the enduro range. Unlike some rivals, Beta embraces rider-scale adjustability—map switches, power valve tweaks, and ergonomic options that let owners tailor bikes without a race truck. Historically, Beta personifies Italian craftsmanship aimed at dirt: elegant castings, tidy looms, and field-friendly service. Club racers and trail riders praise how Betas turn fatigue into flow; the bikes reward precise inputs yet forgive mistakes. In a category where specs are loud, Beta’s quiet confidence—how the bike feels between trees—has built a fiercely loyal following.