How many gears does the 2026 KTM 125 SX have?

Name: 2026 KTM 125 SX
Brand: KTM

The 2026 KTM 125 SX has a Gearbox of 6-speed.

KTM 125 SX - 2026 Specifications and Reviews

The 2026 KTM 125 SX is a lightweight 2-stroke motocross bike engineered for young and amateur riders seeking competitive performance. Featuring a sharp 124.8cc engine with EFI and WP XACT suspension, it delivers responsive handling and reliability for both training and entry-level racing. This machine is renowned for outstanding agility and value in the junior motocross segment.

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2026

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Engine and Transmission Specifications
Clutch	Wet multi-disc DS clutch, Brembo hydraulics
Induction	Keihin EFI, throttle body 39 mm
Gearbox	6-speed
Capacity	124.8 cm³
Engine Type	1-cylinder, 2-stroke engine

Physical measures and capacities
Fuel Capacity	7.2 l
Ground Clearance	359 mm
Seat Height	958 mm

KTM 125 SX dimensions and frame
Rear Travel	300 mm
Front Travel	310 mm
Rear Suspension	WP XACT Monoshock with linkage
Front Suspension	WP XACT-USD (AER), Ø 48 mm
Rear Brakes	Disc brake
Front Brakes	Disc brake
Frame	Central double-cradle-type 25CrMo4 steel
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track95%

City10%

Cornering90%

Daily Riding10%

Touring8%

Passenger5%

Rider Profile

Best For	This is a full-on motocross competition bike best suited to intermediate through expert off-road riders, not beginners or casual road riders.
Purpose	Built purely for closed-course motocross racing, it excels at jumps, berms, and rapid direction changes on dirt tracks rather than any street use.
Rider Fit	The tall 958 mm seat height, aggressive ergonomics, and demanding 2-stroke power delivery require good rider fitness, strength, and prior dirt bike experience.
Character	Light, explosive, and razor-sharp in handling, it rewards aggressive riding with a peaky two-stroke power band and minimal weight to manage.
Not Ideal For	It is not suitable for commuting, highway travel, passengers, or riders seeking comfort, storage, or a forgiving low-end power delivery.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.