Beta RR 400 4-Stroke - 2007 Specifications and Reviews

The 2007 Beta RR 400 4-Stroke is a competitive enduro machine designed for serious off-road riders seeking reliability and performance. Its liquid-cooled 398cc single-cylinder four-stroke engine delivers strong mid-range power with a 6-speed transmission, while the lightweight molybdenum steel frame ensures nimble handling on technical terrain. Known for durability and user-friendly characteristics, it appeals to both amateur and professional enduro competitors.

2007
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General information

CategoryEnduro / offroad
Year2007
ModelBeta RR 400 4-Stroke

Engine and Transmission Specifications

Clutchwet multi-disc clutch
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication system2 oil pumps
IgnitionDC-CDI without trembler with variable ignition ming, Kokusan type
Fuel systemCarburettor. Keihin FCR-MX 39
Bore x stroke89.0 x 64.0 mm (3.5 x 2.5 inches)
Compression11.0:1
Engine typeSingle cylinder, four-stroke
Capacity:398.00 ccm (24.29 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter240 mm (9.4 inches)
Rear brakesSingle disc. Disc 240 mm and single-piston floating caliper
Front brakes diameter255 mm (10.0 inches)
Front brakesSingle disc. Floating disc 255 mm and double-piston floating caliper
Rear tyre dimensions140/80-18
Front tyre dimensions90/90-21
Rear suspensionMonoshock with progressive compound lever
Front suspension travel45 mm (1.8 inches)
Front suspensionHydraulic USD fork with 45 mm shaft
Frame typeMolybdenum steel with double cradle split above the exhaust port

Physical measures and capacities

Reserve fuel capacity1.00 litres (0.26 gallons)
Fuel capacity8.50 litres (2.25 gallons)
Wheelbase1,500 mm (59.1 inches)
Ground clearance320 mm (12.6 inches)
Overall width813 mm (32.0 inches)
Overall length2,270 mm (89.4 inches)
Overall height1,255 mm (49.4 inches)
Seat height940 mm (37.0 inches) If adjustable, lowest setting.
Dry weight117.5 kg (259.0 pounds)
 
 

Other specs

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

Performance Profile & Rider Fit

Best For

Track25%
City20%
Cornering55%
Daily Riding20%
Touring15%
Passenger5%

Rider Profile

Best ForThis bike suits intermediate to experienced off-road riders comfortable with a tall seat height, light weight, and sharp enduro-focused handling.
PurposeBuilt purely for competitive enduro and technical off-road trail riding rather than street use or touring.
Rider FitThe very low dry weight and tall 940mm seat height favor taller, fit riders who can manage standing riding and aggressive terrain.
CharacterIt rewards an aggressive, active riding style with quick direction changes, technical climbs, and off-camber terrain over relaxed cruising.
Not Ideal ForThis is not a good fit for commuters, passengers, highway touring, or riders seeking a low, comfortable, road-oriented machine.

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

Rider Fit Visualizer

2007 Beta RR 400 4-Stroke Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 940mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2007 Beta RR 400 4-Stroke, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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