Aprilia RSV 4R (2010) vs Aprilia SR Max 125 (2010-12) vs Aprilia SX 125 (2008-) vs Aprilia RS 660 (2021)

Comparison technical specifications

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Make:	Aprilia	Aprilia	Aprilia	Aprilia
Model:	RSV 4R	SR Max 125	SX 125	RS 660
Years:	2010	2010-12	2008-	2021
Engine:	Four stroke, longitudinal 65° V four , DOHC, 4 valves per cylinder	Four stroke, single cylinder, SOHC, 4 valves	Two stroke, single cylinder Aluminium cylinder with Nikasil coated liner. Read valve intake. Separate mixing. Homologated to Euro 3 standard.	Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder
Capacity:	998.9 cc / 61 cu in	124 cc / 7.6 cu in	125 cc / 7.6 cu-in	659 cc / 40.2 cu-in
Bore x Stroke:	78 x 52.3 mm	57 x 48.6 mm	54 x 54.5 mm	81 x 63.93 mm
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled with radiator and water-oil heat exchanger
Induction:	Variable height intake trumpets. Airbox with aerodynamic side intakes. 4 Throttle bodes, 8 injectors, ride-by-wire fuel management. Multi-mapping	Electronic injection	Dell’Orto VHST 28	Airbox with front air intake. 2 ∅48 mm throttle bodies, Ride-By-Wire management
Starting:	Electric	Electric	Kick	Electric
Max Power:	132 kW / 180 hp @ 12500 rpm	11.2 kW / 15 hp @ 9250 rpm	16.4 kW / 22 hp	100 hp / 73.5 kW @ 10,500 rpm
Max Torque:	115 Nm / 11.7 kgf-m / 84.8 lb-ft @ 10000 rpm	12 Nm / 1.22 kgf-m / 8.85 lb-ft @ 8000 rpm	16.0 Nm / 1.6 kgf-m / 11.8 ft-lb	67.0 Nm / 6.83 kgm @ 8,500 rpm
Transmission:	6-speed cassette type gearbox with Aprilia Quick Shift electronic system (AQS)	Automatic (CVT) with torque server	6 Speed	6 Speed, AQS Aprilia Quick Shift
Frame:	Aluminium dual spar frame with cast and pressed elements. Sachs steering damper	Double cradle trellis in high strength steel tubing	High strength steel frame with double trellis beam and double cradle. Separate seat frame.	Double beam aluminium frame with detachable rear seat
Front Suspension:	Upside-down Showa fork with Ø43 mm stanchions. Aluminium radial caliper mounts. Completely adjustable spring preload and hydraulic compression and rebound damping.	Ø35 mm Hydraulic telescopic fork	Upside down telescopic fork, Ø40 mm	Kayaba upside down fork ∅ 41 mm with counter spring, aluminium feet for fixing radial calipers. Adjustable for rebound, compression and spring preload.
Rear Suspension:	Double braced aluminium swingarm; mixed low thickness and sheet casting technology. Sachs piggy back monoshock with completely adjustable: spring preload, wheelbase, hydraulic compression and rebound damping. APS progressive linkage.	Double hydraulic shock absorber with preload adjustment	Steel swingarm. Hydraulic monoshock with piggy back cylinder	Aluminium swingarm with asymmetrical trusses. Monoshock with adjustable counter spring: rebound and spring preload.
Front Brakes:	2 x Ø320 mm lightweight stainless steel floating discs, Brembo monobloc radial calipers with 4 opposed pistons. Sintered pads. Radial master cylinder. Metal braided brake line.	Single Ø260 mm disc	Single Ø260 mm disc, sliding 2 piston caliper, Brembo	2x 320mm Brembo radial calipers with 4 32mm opposing pistons. Radial pump and metal braided brake hose
Rear Brakes:	Single Ø220 mm disc. Brembo floating caliper with 2 insulated pistons. Sintered pads. Master cylinder with integral reservoir. Metal braided brake line.	Single Ø240 mm disc	Single Ø220 mm disc, sliding 1 piston caliper	Single 220mm disc; Brembo calliper with 2 isolated ∅ 34mm pistons. Pump with integrated tank and metal braided hos
Front Tyre:	120/70 ZR17	120/70-15	110/70 17	120/70 ZR 17 Tubeless radials
Rear Tyre:	190/55 ZR17	140/60-14	150/60 17	180/55 ZR 17 (alternatively 180/60 ZR17) Tubeless radials
Seat Height:	845 mm / 33.3 in	815 mm	870 mm / 34.3 in	815 mm / 32.0 in
Fuel Capacity:	17 Litres / 4.5 US gal	15.5 liters / 4.1 US gal	10 liters / 2.6 US gal	15 Litres / 3.9 US gal