Engineered by Beta for the enduro - offroad motorcycle segment, the 2008 Beta RR 4T 400 relies on a 398 cc (24.3 cu in) liquid-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 89.0 x 64.0 mm (3.5 x 2.5 inches) with a 11.0:1 compression ratio.
On the scales, the RR 4T 400 measures 117.5 kg (259 lbs) dry. Rider ergonomics and chassis geometry center around a 940 mm (37 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,500 mm (59.1 in) wheelbase engineered for balanced agility and highway composure. The 8.5-liter (2.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Beta archive, this model family spans 3 indexed model years from 2008 to 2020, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
940 mm (37 in)
Engine
Displacement398.0 ccm (24.29 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression11.0:1
Bore x Stroke89.0 x 64.0 mm (3.5 x 2.5 inches)
Fuel SystemCarburettor. Keihin FCR-MX 39
IgnitionDC-CDI without trembler with variable ignition timing, Kokusan type.
Lubrication2 oil pumps
CoolingLiquid
Transmission
Gearbox6-speed
Clutchwet multi-disc clutch
Chassis
Frame TypeMolybdenum steel with double cradle split above the exhaust port
Front SuspensionHydraulic USD fork with ø45 mm shaft
Rear SuspensionMonoshock with progressive compound lever
Wheelbase1500 mm (59.1 inches)
Ground Clearance320 mm (12.6 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre140/80-18
Front BrakesSingle disc. double-piston floating caliper
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
