Suzuki FX125

The Suzuki FX125 is an underbone motorcycle manufactured in Malaysia and Japan from 1998 and it is one of the most powerful 4 stroke engines.

Suzuki FX125
Suzuki FX125
ManufacturerSuzuki
Also calledSuzuki FU125
Production2000 - present
ClassUnderbone
EngineType 4 Stroke, DOHC, oil-cooled, generating 13.3 hp/ps(factory claimed)
Transmission5 speed manual
BrakesFront: Front disc, four piston caliper
Rear: drum
Fuel capacity4.2 L
RelatedSuzuki FXR150 and Suzuki Raider 150

It uses a 5 speed 125 cc (7.6 cu in) DOHC four-valve single-cylinder engine. This engine is of the same design as the 150 cc (9.2 cu in) engine which powers its sports bike, the Suzuki FXR150 and another underbone, the Suzuki Raider 150. This engine features SACS Suzuki Advanced Cooling System in which oil as well as air is used to cool the engine. To cool the oil, the engine is fitted with an external oil cooler.

Unlike the Suzuki FXR150 and Suzuki Raider 150 150cc, 6 speed engines, the Suzuki FX125 and Raider 125 engines are 125cc and 5 speed. The frame, rear suspension, seat, front wheel and front brakes are identical to that of the Suzuki Raider 150.

The main features are rear monoshock rear suspension, a manual five-speed short gear ratio transmission, dual camshaft engine, lightweight chassis construction, 17 inch alloy cast wheels and front disc brake, most of which are rarely found in underbones. Some suzuki FX125s were supplied with spoked wheels.

The dash unit has an analogue speedometer and lights to show turn signal, top gear, neutral and high beam peos.

The Suzuki FX125 was sold mostly in Thailand, Malaysia, Viet Nam and in small numbers in New Zealand and Greece.

A Suzuki FX125 with covers removed

Technical data

DIMENSIONS
Overall length1955 mm
Overall width680 mm
Overall height1080 mm
EngineSpecification
Engine typeAir - Oil Cooled, DOHC 4-Valve, 4-Stroke
Bore × stroke57.0 × 48.8 mm
CarburetorMIKUNI BS26SS
Displacement124.5 cc
Compression ratio10.2 : 1
Starting systemKick and electric
Maximum horsepower13.3 hp @ 10,500 RPM
Lubrication systemSACS (Suzuki Advanced Cooling System)
Fuel tank capacity4.2 L
Fuel consumption3.0 Lt/100 km
Chassis and suspension
ChassisTwin-Spar Underbone
Suspension, FrontTelescopic Coil Spring, Oil-damped Fork x 2
Suspension, RearMono Shock, Coil Spring, Oil-damped w/preload adjustment
Brakes - FrontDisc brake w/twin piston caliper
Brakes - RearDrum brake

References


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