APRILIA RS 125

Engine
Liquid cooled, single cylinder two stroke. Aluminium cylinder with Nikasil coated liner. Read valve intake. Separate lubrication. Homologated to Euro 2 standards.

Bore by stroke
54 x 54.5 mm.

Displacement
124.8 cc.

Compression ratio
12.5 ± 0.5:1.

Carburettor
Dell’Orto PHBH 28.

Ignition
Electronic CDI ignition.

Starting
Electric.

Alternator
12 V – 180 W

Lubrication
Separate mixing with variable displacement, volumetric pump.

Gearbox
6 speed.
1st 10/30 (0.33)
2nd 14/29 (0.48)
3rd 17/27 (0.63)
4th 19/25 (0.76)
5th 21/24 (0.87)
6th 22/23 (0.67)

Primary drive
Gearbox: 63/19 (3.31).

Final drive
Chain: 17/40 (2.35).

Clutch
Multi-disc in oil bath.

Frame
Cast aluminium, reinforced box section, sloping twin-spar frame.

Front suspension
Upside down hydraulic fork, Ø 40 mm. Wheel travel 120 mm.

Rear suspension
Cast aluminium box section swingarm with asymmetric members. Hydraulic monoshock with adjustable spring preload. Wheel travel 120 mm.

Brakes
Front: Floating Ø 320 mm disc. Radial caliper with four different diameter pistons, Ø 32 mm – Ø 27 mm.
Rear: Single Ø 220 mm disc. Caliper with two Ø 30 mm pistons.

Wheels
Aluminium alloy. Front 3.00 x 17”; rear 4,00 x 17”.

Tyres
Tubeless radial. Front 110/70 17”; rear 150/60 17”.

Dimensions
Overall length 1955 mm
Overall width (at handlebars) 720 mm
Overall height (at windshield) 1100 mm
Seat height 805 mm
Wheelbase 1345 mm

Tank
14 litres (3.5 litre reserve).