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) vs Beta RS 450 (2014) vs Beta RS 400 (2014) vs Beta RS 350 (2014) vs Beta RS 350 (2013)

Comparison technical specifications

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Make:	Beta	Beta	Beta	Beta	Beta	Beta	Beta	Beta	Beta
Model:	Alp 4.0	Euro 350	Alp 4.0	Alp 125 4T	RS 520	RS 450	RS 400	RS 350	RS 350
Years:	2005-06	2003-06	2003-04	2008	2013	2014	2014	2014	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	Four stroke, single cylinder, 4 valve	Four stroke, single cylinder, 4 valve	Four stroke, single cylinder	Four stroke, single cylinder
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	449 cc / 27.4 cu in	398 cc / 24.3 cu in	349 cc / 21.3 cu in	349 cc / 21.3 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	95 x 63.4 mm	95 x 56.2 mm	88 x 57.4 mm	88 x 57.4 mm
Compression Ratio:	9.5:1	9.5:1	9.5:1	10.0:1	12.1:1	11.95:1	12.4:1	12.1:1	12.1:1
Cooling System:	Air cooled	Air cooled	Air cooled	Air cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled
Induction:	Mikuni BST 33	Mikuni BST 33	Mikuni BST 33	Mikuni UCAL, 26 mm Ø	Keihin FCR-MX Ø 39mm	Keihin FCR-MX Ø 39 mm	Keihin FCR-MX, Ø 39mm	Keihin FCR-MX Ø 39 mm	Keihin FCR-MX Ø 39 mm
Ignition:	Electronic	Electronic	Electronic	Electronic	DC-CDI with variable ignition timing, Kokusan.	DC-CDI with variable ignition timing, Kokusan.	DC-CDI with variable ignition timing, Kokusan.	DC-CDI with variable ignition timing, Kokusan.	DC-CDI with variable ignition timing, Kokusan.
Starting:	Electric	Electric	Electric	Electric & kick	Electric and kick	Electric and kick	Electric and Kick	Electric and kick	Electric and kick
Transmission:	6 Speed	6 Speed	6 Speed	5 Speed	6 Speed	6 Speed	6 Speed	6 Speed	6 Speed
Final Drive:	Chain	Chain	Chain	Chain	O-ring chain, DID	O-ring chain, DID	O-ring chain, DID	O-ring chain, DID	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,	Sachs USD fork, Ø 48 mm, adjustable compression and rebound, TFX technology	Sachs USD fork, Ø 48 mm, adjustable compression and rebound, TFX technology,	Marzocchi USD fork, Ø 45 mm, adjustable compression and rebound, TFX technology	Marzocchi USD fork, Ø 45 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	290 mm / 11.4 in	290 mm / 11.4 in	290 mm / 11.4 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,	Sachs shock w/adjustable rebound and hi/low speed compression,	Sachs shock w/adjustable rebound and hi/low speed compression,	Sachs shock w/adjustable rebound and hi/low speed compression	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	290 mm / 11.4 in	290 mm / 11.4 in	290 mm / 11.4 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	Single Ø 260 mm disc, 2 piston caliper	Single Ø 260 mm floating disc, 2 piston caliper	Single Ø 260 mm floating disc, 2 piston caliper	Single Ø 260 mm floating disc, 2 piston caliper
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	Single Ø 240 mm disc, 1 piston caliper	Single Ø 240mm disc, 1 piston caliper	Single Ø 240 mm disc, 1 piston caliper	Single Ø 240 mm disc, 1 piston caliper
Front Tyre:	90/90 -21	120/80-16	90/90 -21	90/90-21	90/90 - 21	90/90 - 21	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	140/80 - 18	140/80 -18	140/80 -18	140/80 -18
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	320 mm / 12.6 in	320 mm / 2.6 in	320 mm / 12.6 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	934.7 mm / 36.8 in	934.7 mm / 36.8 in	934.7 mm / 36.8 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	108 kg / 240 lbs	109 kg / 245 lbs	108 kg / 240 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	7.9 L / 2.1 gal	7.9 L / 2.1 US gal	7.9 L / 2.1 US gal	7.9 L / 2.1 US gal