Beta Alp 4.0 (2005-06) vs Beta Euro 350 (2003-06) vs Beta Alp 4.0 (2003-04) vs Beta Alp 125 4T (2008) vs Beta RS 520 (2013)

Comparison technical specifications

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Make:	Beta	Beta	Beta	Beta	Beta
Model:	Alp 4.0	Euro 350	Alp 4.0	Alp 125 4T	RS 520
Years:	2005-06	2003-06	2003-04	2008	2013
Engine:	Four stroke, single cylinder, SOHC, 4 valves	Four stroke, single cylinder, SOHC, 4 valves	Four stroke, single cylinder, SOHC, 4 valves	Four stroke, single cylinder, SOHC, 2 valves per cylinder	Four stroke, single cylinder,4 valve
Capacity:	349 cc / 21.3 cu in	349 cc / 21.3 cu in	349 cc / 21.3 cu in	124 cc / 7.6 cu in	497.4 cc / 30.4 cu in
Bore x Stroke:	79 x 71.2 mm	79 x 71.2 mm	79 x 71.2 mm	54 x 54 mm	100 x 63.4 mm
Compression Ratio:	9.5:1	9.5:1	9.5:1	10.0:1	12.1:1
Cooling System:	Air cooled	Air cooled	Air cooled	Air cooled	Liquid cooled
Induction:	Mikuni BST 33	Mikuni BST 33	Mikuni BST 33	Mikuni UCAL, 26 mm Ø	Keihin FCR-MX Ø 39mm
Ignition:	Electronic	Electronic	Electronic	Electronic	DC-CDI with variable ignition timing, Kokusan.
Starting:	Electric	Electric	Electric	Electric & kick	Electric and kick
Transmission:	6 Speed	6 Speed	6 Speed	5 Speed	6 Speed
Final Drive:	Chain	Chain	Chain	Chain	O-ring chain, DID
Front Suspension:	Hydraulic fork, 48mm Ø	Hydraulic fork, 48mm Ø	Hydraulic fork, 48mm Ø	Hydraulic forks, 38 mm Ø	Sachs USD fork, Ø 48 mm, adjustable compression and rebound, TFX technology,
Front Wheel Travel:	200 mm / 7.9 in	120 mm / 4.7 in	200 mm / 7.9 in	170 mm / 6.7 in	290 mm / 11.4 in
Rear Suspension:	Single shock adjustable spring preload	Single shock adjustable spring preload	Single shock adjustable spring preload	Single shock adjustable spring preload	Sachs shock w/adjustable rebound and hi/low speed compression,
Rear Wheel Travel:	220 mm / 8.7 in	100 mm / 3.9in	220 mm / 8.7 in	180 mm / 7.1 in	290 mm / 11.4 in
Front Brakes:	Single 260 mm Ø disc, 2-piston caliper	Single 300 mm Ø disc, 2-piston caliper	Single 260 mm Ø disc, 2-piston caliper	Single 245 mm Ø disc, 2-piston caliper	Single Ø 260 mm floating disc, 2 piston caliper, Nissen
Rear Brakes:	Single 220 mm Ø disc, 2-piston caliper	Single 220 mm Ø disc, 2-piston caliper	Single 220 mm Ø disc, 2-piston caliper	Single 220 mm Ø disc, 1-piston caliper	Single Ø 240 mm disc, 1 piston caliper, Nissen
Front Tyre:	90/90 -21	120/80-16	90/90 -21	90/90-21	90/90 - 21
Rear Tyre:	140/80 -18	140/90 -15	140/80 -18	120/80-18	140/80 -1 8
Ground Clearance:	300 mm / 1.8 in	240 mm/ 9.4 in	300 mm / 1.8 in	298 mm / 11.7 in	320 mm / 12.6 in
Seat Height:	865 mm / 34 in	740 mm / 29.1 in	865 mm / 34 in	850 mm / 33.5 in	934.7 mm / 36.8 in
Dry Weight:	133 kg / 293 lbs	138 kg / 304 lbs	133 kg / 293 lbs	101 kg / 223 lbs	108 kg / 240 lbs
Fuel Capacity:	10.5 Litres / 2.8 US gal	22 Litres / 5.8 US gal	10.5 Litres / 2.8 US gal	6.8 L / 1.8 US gal	7.9 L / 2.1 US gal