Comparison of Beta RR 400 4-Stroke and Yamaha WR 450 F 2007

Attribute	Beta RR 400 4-Stroke ×	Yamaha WR 450 F 2007 ×
General
Production from (year)	2007	2007
Make	Beta	Yamaha
Model	Beta RR 400 4-Stroke	Yamaha WR 450 F
Category	Enduro / offroad	Enduro / offroad
Engine and transmission
Engine type	Single cylinder, four-stroke	Single cylinder, four-stroke
Fuel system	Carburettor. Keihin FCR-MX 39	-
Displacement (cm³)	398	449
Cooling system	Liquid	Liquid
Transmission type,final drive	Chain	Chain
Bore (mm)	89	95
Stroke (mm)	64	63.4
Gearbox	6-speed	5-speed
Fuel control	-	Double Overhead Cams/Twin Cam (DOHC)
Ignition	DC-CDI without trembler with variable ignition ming, Kokusan type	CDI
Clutch	wet multi-disc clutch	-
Lubrication system	2 oil pumps	-
Compression	11.0:1	12.3:1
Chassis
Front suspension	Hydraulic USD fork with ø45 mm shaft	Telescopic Fork, Coil spring/oil damper, 11.8´
Rear suspension	Monoshock with progressive compound lever	Swingarm (link, suspension), Coil spring/gas-oil damper, 12.0´
Front brakes	Single disc. Floating disc ø255 mm and double-piston floating caliper	Single disc
Rear brakes	Single disc. Disc ø240 mm and single-piston floating caliper	Single disc
Diameter (mm)	240	245
Frame type	Molybdenum steel with double cradle split above the exhaust port	-
Front tyre	90/90-21	80/80-M21
Rear tyre	140/80-18	110/90-M18
Front wheel travel (mm)	45	-
Dimensions
Wheelbase (mm)	1,500	1,486
Dry weight (kg)	117	112
Overall height (mm)	1,255	1,295
Overall length (mm)	2,270	2,174
Overall width (mm)	813	826
Seat height (mm)	940	978
Ground clearance (mm)	320	366
Performance
Reserve fuel capacity (l)	1	-
Fuel capacity (l)	8.5	7.94