Beta REV-3 125 - 2007 Specifications and Reviews

The 2007 Beta REV 3-125 is a lightweight trial motorcycle designed for riders developing their skills in competitive trials riding. Powered by a 124cc liquid-cooled single-cylinder engine with electronic ignition, it delivers precise control and agility needed for navigating obstacles. Known for its responsive handling and reliable performance, this model is ideal for amateur and intermediate trial competitors seeking an affordable, manageable platform.

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General information

CategoryTrial
Year2007
ModelBeta REV 3 - 125

Engine and Transmission Specifications

ClutchWet multi-disc clutch with cush-drive rubber
Transmission typefinal driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemmix with fuel 1,5 % (synthetic oil)
IgnitionElectronic AET 12V - 85W
Fuel systemCarburettor. Mikuni VM26/208
Bore x stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Compression11.8:1
Stroke2
Engine typeSingle cylinder
Capacity:124.00 ccm (7.57 cubic inches)

Physical measures and capacities

Wheelbase1,310 mm (51.6 inches)
Ground clearance310 mm (12.2 inches)
Overall width850 mm (33.5 inches)
Overall length1,990 mm (78.3 inches)
Overall height1,120 mm (44.1 inches)
Seat height660 mm (26.0 inches) If adjustable, lowest setting.
Dry weight72.0 kg (158.7 pounds)
 
 

Beta REV-3 125 dimensions and frame

Rear brakes diameter150 mm (5.9 inches)
Rear brakesSingle disc. disc 165 mm with 2 piston caliper
Front brakes diameter185 mm (7.3 inches)
Front brakesSingle disc. disc 185 mm with 4 piston caliper
Rear tyre dimensions4.00-18
Front tyre dimensions2.75-21
Rear suspensionHydraulic monoshock
Front suspension travel38 mm (1.5 inches)
Front suspensionHydraulic fork with 38 mm shaft
Frame typeDouble wave aluminium beam
 
 

Speed and acceleration

Reserve fuel capacity1.00 litres (0.26 gallons)
Fuel capacity3.20 litres (0.85 gallons)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track5%
City10%
Cornering60%
Daily Riding5%
Touring3%
Passenger0%

Rider Profile

Best ForThis is a specialist trial machine best suited to riders with dedicated off-road or trial competition experience, not general road riders.
PurposeBuilt purely for technical trial competition, obstacle negotiation, and ultra-low-speed balance and control rather than any kind of speed or distance riding.
Rider FitIts extremely light dry weight and tall, narrow trial-focused ergonomics demand active standing, balance, and leg strength rather than seated comfort.
CharacterA featherweight, high-revving 2-stroke trial tool with razor-sharp low-speed responsiveness and no concession to comfort or cruising ability.
Not Ideal ForNot suitable for riders wanting highway speed, passenger carrying, touring range, or everyday street commuting.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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