Aprilia RS450 Replica

Aprilia RS450
Manufacturer	Aprilia
Also called	RS450 Replica, RS4 50 Replica, RS4 50
Production	2014
Engine	Two stroke, single cylinder
Compression ratio	11.5:1
Top Speed	96.6 km/h / 60 mph
Fuel System	Carburetor
Ignition	CDI
Transmission	6-Speed
Frame	Aluminum
Suspension	Front: Upside down fork, Ø41 mm Rear: Asymmetric swingarm, monoshock
Brakes	Front: Stainless steel disc, Ø 300 mm, 4-piston radial caliper Rear: Stainless steel disc, Ø 218 mm, single piston caliper
Front Tire	110/80-17
Rear Tire	130/70-17
Wheelbase	1350 mm / 53.1 in
Seat Height	820 mm / 32.3 in.
Weight
Fuel Capacity	14.5 Liters / 3.8 US gal
Manuals	Service Manual

It could reach a top speed of 96.6 km/h / 60 mph.

Engine

The engine was a Liquid cooled cooled Two stroke, single cylinder. The engine featured a 11.5:1 compression ratio.

Drive

Power was moderated via the Multiple discs in oil bath.

Chassis

It came with a 110/80-17 front tire and a 130/70-17 rear tire. Stopping was achieved via Stainless steel disc, Ø 300 mm, 4-piston radial caliper in the front and a Stainless steel disc, Ø 218 mm, single piston caliper in the rear. The front suspension was a Upside down fork, Ø41 mm while the rear was equipped with a Asymmetric swingarm, monoshock. The RS450 Replica was fitted with a 14.5 Liters / 3.8 US gal fuel tank. The wheelbase was 1350 mm / 53.1 in long.

Photos

Overview

Aprilia RS4 50 Replica

New colors for the smaller sports SBK Aprilia, complete with '33 'Marco Melandri decals. The price unchanged from the base version

After having announced a month ago the new RS4 50 Replica, Aprilia has come a 'full circle' of its sport models dedicated to youth with the confirmation of 125 cc variant - faithfully inspired by the Aprilia RSV4 SBK 2014 with which Marco Melandri and Sylvain Guintoli defending the colors of Aprilia in World Superbike.

The sleek silver livery and the classic number '33 'of Macho Melandri characterize the new variant 'Replica' of the RS4, with an LED taillight.. The 125 also projects a 'Racing' integrated idesignl, which surely is aggressive. The frame is made on the basis of the experience gained from the Venetian house in the competitions, with exposed die-cast aluminum alloy and cross-ribbing reinforcement.

As for the engines, the single-cylinder 50 cc of the 50 Replica RS4 is a two-stroke liquid-cooled motor with valve induction, separate lubrication mixing and a six-speed gearbox. The RS4 125 Replica is driven by a single cylinder 125 cc, 4-stroke, 4-valve, electronic injection and liquid cooled, with distribution to double overhead camshaft (DOHC).

The suspension consists of a 41 mm inverted fork with sliders anodized black (stroke 110 mm) and the mono shock absorber is fitted directly to the asymmetric swingarm, while the braking system relies on a hard steel front disc of 300 mm (paired with radial four-piston calipers) and a 220 mm rear disc (gripped by a single-piston caliper). The attractive six-spoke wheels are 17 "and fit tires 100/80 in front and 130/70 at the rear.

In the catalog of accessories for the RS4 125 Replica also include the innovative quick-change system Aprilia Quick Shift, a technical solution derived from the RSV4 that allows the rider to engage a higher gear without using the clutch, making it easier and faster to change.

Extensive aerodynamic studies have minimized surface areas without compromising wind protection, and the fairings showcase the superlative mechanicals of the Aprilia RS4 50 and Aprilia RS4 125 rather than conceal them. As a result, the frame and engine are not hidden away but proudly flaunted as fundamental elements of the design of Aprilia's new small supersports models. With the triple headlight, the Aprilia RS4 bikes have a decidedly aggressive look that lends a unique character to the entire front end. The LED taillight merges stunningly into the ultra-compact tail fairing and offers excellent luminosity. The fairing, product of extensive wind tunnel testing and race experience, offers excellent wind protection together with superb aerodynamic efficiency. And as well as contributing to the extremely aggressive looks of the bike, the top fairing and tail fairing also maximize performance in terms of speed. On Aprilia RS4 125, one additional detail underscores the level of sophistication of the bike: the exhaust, which is unmistakably inspired by competition machines, is completely integrated within the lower part of the fairing. A solution that is not just visually effective, but which also contributes significantly to the dynamics of the bike by helping to centralise masses. With the new RS4 50 and RS4 125, Aprilia confirms its global leadership in the small capacity sports and young-targeted bike segment, creating models that exceed the expectations of even the most discerning rider.

The sophisticated chassis architecture of the Aprilia RS4 50 and RS4 125 is complemented by state of the art engines. The single cylinder 50 cc unit developed by Aprilia for the RS4 50 is a water cooled two-stroke with reed valve induction. The lubrication uses a separate mixing system with a variable capacity volumetric pump. The six speed gearbox lets the rider make full use of the performance of this class beating engine. The Aprilia RS4 is powered by an all new 125 cc water cooled 4 stroke single cylinder engine with four valves and electronic engine boasting a sophisticated double overhead camshaft (DOHC) valve timing system. This engine produces the maximum power output permitted for the class with a smooth, linear delivery and ecologically - as it meets even the strictest emissions regulations in effect. With a six speed gearbox allowing the rider to make full use of the power available in all conditions, the Aprilia RS4 125 offers unbeatable performance in its class not just in terms of absolute power at high engine speeds, but also in terms of usable power band, minimized vibration and outstanding mechanical reliability.

Make Model	Aprilia RS4 50 Replica
Year	2014
Engine Type	Two stroke, single cylinder
Displacement	49.9 cc / 3.05 cub in.
Bore X Stroke	39.9 x 39.9 mm
Cooling System	Liquid cooled
Compression	11.5:1
Lubrication	Automatix mixer
Fuel System	Carburetor
Exhaust	Single, stainless steel and chrome silencer
Ignition	CDI
Starting	Electric
Clutch	Multiple discs in oil bath
Transmission	6-Speed
Primary Transmission	69/29
Final Drive	Chain
Final Drive Ratio	60/13
Frame	Aluminum
Front Suspension	Upside down fork, Ø41 mm
Front Wheel Travel	110 mm / 4.3 in.
Rear Suspension	Asymmetric swingarm, monoshock
Rear Wheel Travel	130 mm / 5.1 in.
Front Brakes	Stainless steel disc, Ø 300 mm, 4-piston radial caliper
Rear Brakes	Stainless steel disc, Ø 218 mm, single piston caliper
Wheels	Light alloy with 6 split spokes
Front Rim	2.75 x 17 in.
Rear Rim	3.50 x 17 in.
Front Tire	110/80-17
Rear Tire	130/70-17
Dimensions	Length: 1953 mm / 76.9 in Width: 740 mm / 29.1 in Height: 1138 mm / 44.8 in
Wheelbase	1350 mm / 53.1 in
Seat Height	820 mm / 32.3 in.
Fuel Capacity	14.5 Liters / 3.8 US gal
Reserve	3.5 Liters / 0.92 US gal
Top Speed	96.6 km/h / 60 mph