KTM 125 SX

R 59 500
Year2020
Mileage12345 km
ColourBlack
Condition
Full Service History
VIN
Registration
Stock Code28469187

Description

This 2020 KTM 125 SX has 12 345 km on the odometer. It is listed for R59 500 by Fast KTM in Alberton, Gauteng.

The 2020 KTM 125 SX is a lightweight, high-performance 2-stroke motocross machine built for riders who want sharp handling, quick acceleration and an exciting race-ready experience. Its 124.8 cc liquid-cooled single-cylinder 2-stroke engine features a Mikuni TMX 38 carburettor, kick start and 6-speed transmission, delivering crisp throttle response and strong high-revving performance. A wet multi-disc DS clutch with Brembo hydraulic actuation provides smooth and precise gear changes. The lightweight 25CrMo4 steel frame and aluminium subframe offer an excellent balance of agility, strength and durability. WP XACT 48 mm upside-down front forks with approximately 310 mm of travel and a WP XACT rear shock with linkage and approximately 300 mm travel provide controlled handling over jumps, whoops and rough track sections. A 260 mm front disc and 220 mm rear disc deliver dependable stopping power, while 21-inch front and 19-inch rear spoked wheels with motocross tyres provide excellent traction and control. With an approximate dry weight of just 87.5 kg, 950 mm seat height and 375 mm ground clearance, the 2020 KTM 125 SX is a serious lightweight motocross bike ready for the track. E&OE. All prices, specifications, promotions and availability are subject to change without prior notice. Images are for illustrative purposes only. Terms and conditions apply.

Vehicle Stats

Vehicle ConditionUsed
Date Listed03 Jul 2026
Last Updated28 Oct 2026
Views28
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Vehicle Specs

Dry Weight (kg) 137
Dry Weight (lbs.) 302.0 pounds
Dry Weight 137 kg / 302.0 lbs
Power-to-Weight Ratio 0.1095 HP/kg
Bore x Stroke (in,) 2.1 x 2.1 inches
Bore x Stroke (mm) 54.0 x 54.5 mm
Displacement (cc) 124.8 cc
Displacement (ci) 7.62 cubic inches
Engine Type Single cylinder, two-stroke
Fuel Control Double Overhead Cams/Twin Cam (DOHC)
Fuel System Injection
Engine Lubrication Wet sump
Ignition Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
Starter Electric
Clutch Wet multi-disc clutch, mechanically actuated
Final Drive Chain   (final drive)
Gearbox 6-speed
Primary Drive 5/8  x  1/4 (520) O Ring. Primary drive: 22:72.
Wheel Travel - Rear (in.) 5.9 inches
Wheel Travel - Rear (mm) 150 mm
Frame Type Central double-cradle
Suspension - Front WP upside-down Ø 48 mm
Suspension - Rear WP Monoshock
Wheel Travel - Rear 150 mm / 5.9 in.
Brakes - Front Single disc
Brakes - Rear Single disc
Tyres - Front 110-17
Specifications courtesy of Specs-SA

Fast KTM

Alberton, Gauteng

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