Asymmetric
swingarm with monoshock, 130mm
wheel travel.
Front Brakes
Single 300mm discs 4 piston caliper
Rear Brakes
Single 218mm disc 1 piston caliper
Front Tyre
110/80 –17
Rear Tyre
130/70 –17
Seat Height
820 mm /
32.3 in
Wet-Weight
120 kg / 264.6 lb
Fuel Capacity
14.5 Litres
/ 3.8 gal
Aprilia's small supersports bikes have been completely revised. Two models
dedicated for young enthusiasts who want their first experience in the
motorcycling world to be with a proper bike.
* Aprilia RS4 marked a milestone in the evolution of the 125 cc motorcycle.
* For the first time ever, the sportiest bike available for 16 year olds was a
4-stroke.
* For the youngest riders of all, the Aprilia RS 50 embodies all of Aprilia's
technology in a genuine racing replica in just 50 cc.
Aprilia has always been the undisputed leader in the 125 cc supersports
segment, pioneering innovative concepts and solutions and setting trends for its
rivals to follow.
The Aprilia RS4 125 is the natural successor and most advanced evolution to date
of the Aprilia RS 125, the bike that has dominated the 125 cc sports class for
years, which set the benchmark for the one-eighth litre sports segment and which
is still today the most highly sought after machine among riders competing in
the Sport Production category.
Aprilia RS4 125 introduces the highly advanced, all-new 4 stroke powerplant to
the sports segment, while adopting styling and technical solutions inherited
from the RSV4, the superbike that led Aprilia to victory in the WSBK 2010
championship.
The most significant characteristics of the Aprilia RS4 are:
* RS4 125 - single cylinder liquid cooled 125 cc 4-stroke with electronic
injection, 4 valves and double overhead camshafts (DOHC)
characteristics in common:
* extremely stiff aluminium perimeter frame derived from racing experience
* 41 mm upside down fork
* front brake with 300 mm disc and radial four piston calliper
* Superbike inspired analogue/digital instrument panel
* fairings derived directly from RSV4 project for total aesthetic coherence with
the SBK world champion
DESIGN
The livery and eye-catching forms of the Aprilia RS4 125 echo the
looks of the Factory version of the Aprilia RSV4 supersports bike. And the RS4 125 share more than just a family resemblance with the most hardcore
street version the bike dominating the world SBK championship.
The design of the fairings and tank, the unique looks of the front end, with the
headlights suspended over the gaping air intakes, and the spectacular tapered
tail fairing are identical to their counterparts on 1000 cc supersports model
that set new standards in terms of style and technical content for the superbike
segment.
Extensive aerodynamic studies have minimised surface areas without compromising
wind protection, and the fairings showcase the superlative mechanicals of the
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 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.
Even from behind, the Aprilia RS4 125 is absolutely unmistakable.
The product of extensive wind tunnel testing and race experience, the fairing
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 maximise performance in terms of speed.
ENGINES
With the new RS4 125, Aprilia confirms its global leadership in the
small capacity sports bike segment, creating models that exceed the expectations
of even the most discerning rider.
The sophisticated chassis architecture of the Aprilia RS4 125 is
complemented by state of the art engines.
The single cylinder 50 cc unit developed by Aprilia for the RS 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 state of the art
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 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, minimised vibration and outstanding mechanical
reliability.
The product of a cutting edge design, the new single cylinder 125 cc unit
features dry sump lubrication making it extremely light and compact, allowing
Aprilia's engineers to develop a class beating chassis layout.
CHASSIS
The RS4 125 stand head and shoulders above the competition for their
superlative chassis layout: developed on the basis of Aprilia's outstanding
successes in WSBK and GP 125, the frame consists of die cast aluminium spars
with crossed reinforcement ribs. With its state of the art design, this
extremely lightweight structure offers exceptional torsional stiffness.
The front suspension also boasts a class beating layout, with a sturdy 41 mm
upside fork, red anodised stanchion clamps and a wheel travel of 110 mm, while
at the rear is a monoshock linked directly to the asymmetric swingarm.
Both the Aprilia RS4 125 boast class beating brake systems: each bike
uses a 300 mm steel disc at the front, gripped by a four piston radial calliper,
and a 220 mm disc at the rear with a single piston calliper.
The 17” wheels are shod with 100/80 rubber up front and a 130/70 tyre at the
rear.
STANDARD EQUIPMENT AND FEATURES
The multifunctional analogue/digital instrument panel with LCD display draws
directly from Aprilia's experience in the Superbike class. The split 6-spoke
design of the wheels further emphasises the purposeful character of Aprilia's
latest small capacity sports bikes.
On Aprilia RS4, 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.
The passenger saddle is yet another example of the extreme level of
sophistication of these new bikes from Aprilia. Instead of fiddly screws, a
practical quick release button allows the passenger seat to be exchanged with
the tail fairing cover in an instant to transform the bike from two seat to
single seat configuration
NOTE: Some of the photos on
Motorcycle Specs are owned by somebody. If you see any of your
photos, you can let me know so that I can acknowledge it, or if
you object to it, I can remove it altogether. If any copyright
holder objects to their articles being placed on Motorcycle
Specs, it will be removed upon request. Any correction or more
info on these bikes will kindly beappreciated
Contact MePrivacy
Policy
Website Stats
