I'm thinking which bike I should buy,so you might help me expressing your opinion.

Aprilia RS 125


Engine: Liquid cooled, single cylinder two stroke. Aluminium cylinder with Nikasil coated liner. Read valve intake. Separate lubrication. Homologated to Euro 3 standards.

Fuel: Dell’Orto VHST 28

Bore x Stroke: 54 x 54,5 mm

Total displacement: 124,8 cc

Compression ratio: 12,5 ± 0,5:1

Fuel system: Dell’Orto VHST 28.

Ignition: Electronic CDI ignition.

Starting: Electric

Generator: 12V - 180 W

Lubrification: Separate mixing with variable displacement, volumetric pump.

Gear box: 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)

Clutch: Multi-plate in oil bath.

Primary drive: Gearbox: 63/19 (3.31).

Final drive: Chain: 17/40 (2.35).

Frame: Sloping twin-spar frame in thin wall box section cast aluminium, with reinforcement cross-ribbing.

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

Rear suspension: Swingarm with asymmetric members in thin wall box section cast aluminium. Hydraulic monoshock with adjustable spring preload. Wheel travel 120 mm.

Brakes: Front: Floating Ø 320 mm disc. Radial caliper with four differential 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

Fuel tank capacity: 14 litres (3.5 litre reserve).

Carburettor: The 21 kW RS 125 (sold on the German market) is still equipped with a Dell’Orto PHBH 28 carburettor and is homologated to Euro 2 standard






Kawasaki Ninja 250
[spoiler]
Engine   
Four-stroke, liquid-cooled, DOHC, parallel twin   
Displacement   
249 cc   
Bore x Stroke   
62.0 x 41.2mm   
Compression Ratio   
11.6:1   
Carburetor   
Keihin CVK30 x 2   
Ignition   
TCBI with digital advance   
Transmission   
Six-speed   
Final drive   
O-Ring Chain   
Cooling System   
Liquid   
Frame Type   
Semi-double cradle, high-tensile steel   
Rake/Trail   
26 degrees / 3.2 in.   
Front Tire Size   
110/70-17   
Rear Tire Size   
130/70-17   
Wheelbase   
55.1 in.   
Front Suspension / Wheel Travel   
37mm hydraulic telescopic fork / 4.7 in.   
Rear Suspension / Wheel Travel   
Bottom-Link UNI-TRAK® with 5-way adjustable preload / 5.1 in.   
Front Brakes   
Single 290mm hydraulic petal disc with two-piston caliper   
Rear Brakes   
Single 220mm petal disc with two-piston caliper   
Fuel Capacity   
4.8 gal.   
Seat Height   
30.5 in.   
Curb Weight   
374.9 lbs.   
Overall Length   
82.1 in.   
Overall Width   
28.1 in.   
Overall Height   
43.7 in.   
Color Choices   
Ebony, Lime Green / Ebony (SE), Pearl White / Ebony (SE)   
Warranty   
12 months   
Good Times™ Protection Plan   
12, 24, 36, 48 months


[/spoiler]