Aprilia 125 Pegaso (1989-90) vs Honda VFR 750F-G (1986) vs KTM 690 SMC R (2020) vs Honda CM 125C (1986) vs Aprilia RS 660 / Factory (2025)

Comparison technical specifications

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Make:	Aprilia	Honda	KTM	Honda	Aprilia
Model:	125 Pegaso	VFR 750F-G	690 SMC R	CM 125C	RS 660 / Factory
Years:	1989-90	1986	2020	1986	2025
Engine:	Two stroke, single cylinder, reed valves	Four stroke, 90°V-four cylinder, gear driven DOHC with rocker arm, 4 valve per cylinder	Single cylinder, 4-stroke, SOHC, 4-valve	Four stroke, parallel twin, OHC, 2 valve per cylinder	Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder
Capacity:	124 cc / 7.6 cu in	748 cc / 45.6 cub in	690 cc / 42.1 cu in	125	659 cc / 40.2 cu-in
Bore x Stroke:	54 x 54.5mm	70 x 48.6 mm	105 x 80 mm	44.0 x 41 mm	81 x 63.93 mm
Compression Ratio:	14.0:1	10.5:1	12.7:1	9.4;1	13.5: 1
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled	Air cooled	Liquid cooled with radiator and water-oil heat exchanger
Induction:	Ø34 mm Dell'Orto carburetor	4x 34.5mm Keihin VD carburetors	Keihin EFI (throttle body 50 mm)		Airbox with front air intake. 2 x 52 mm throttle bodies, Ride-By-Wire management
Starting:	Electric	Electric	Electric		Electric
Max Power:	23 kW / 31 hp @ 10000 rpm	77.4 kW / 106 hp @ 10500 rpm	72 hp / 54 kW @		105 hp / 73.5 kW @ 10500 rpm
Max Torque:	22.5 Nm / 2.3 kgf-m / 16.6 ft-lb @ 85000 rpm	66 Nm / 6.7kgf-m / 48.7 ft-lb @ 7500 rpm	73.5 Nm / 54 lb-ft @ 6500 rpm		68 NM / 50.2 lb-ft @ 8500 rpm
Final Drive:	Chain	Chain	Chain, X-Ring 5/8 × 1/4 in	Chain	Chain, with drive ratio: 17/43
Front Suspension:	Ø41 mm Inverted telescopic forks	37mm Showa air assisted telescopic fork with TRAC Anti-Dive	WP USD XPLOR 48 forks	Telescopic forks	RS: ? 41 mm Kayaba USD fork, rebound and preload adjustable RS Factory: 43mm ?hlins NIX 30 fork, spring preload, rebound and compression damping adjustable
Rear Suspension:	Single chock preload adjustable	Pro-Link adjustable for preload only with remote adjuster	WP shock absorber with Pro-Lever linkage	Dual shocks	RS: Kayaba monoshock, rebound and preload adjustable?hlins STX rear shock, spring preload, rebound and compression damping adjustable RS Factory: ?hlins monoshock, fully adjustable
Front Brakes:	Single Ø300 mm disc, 2 piston caliper	2x 276mm discs, 2 piston calipers	Single 320mm disc, Brembo 4 piston floating caliper	Drum	2x 320mm Brembo radial calipers with 4 horizontally opposed 32 mm pistons. Radial pump and metal braided brake hose
Rear Brakes:	Single Ø220 mm disc, 1 piston caliper	Single 256mm disc 2 piston caliper	Single 240 mm disc, Brembo single piston floating caliper	Drum	Single 220mm disc; Brembo caliper with two 34 mm separate pistons. Master cylinder with separate reservoir and metal braided hose Multimap ABS (Cornering ABS available as optional accessory)
Front Tyre:	100/90-18	110/90 V16	120/70 ZR 17	3.25-18	120/70 ZR 17
Rear Tyre:	120/80-17	130/80 V18	160/60 ZR 17	110/90-16	180/55 ZR 17
Fuel Capacity:	14 Litres / 3.7 US gal	20 Litres / 5.3 US gal	13.5 Litres / 3.5 US gal	13 Litres	15 Litres / 4.0 US gal