KTM 125 SX 2021

The KTM 125 SX is the most compact and lightweight of the full-size bikes and delivers a confidence-inspiring ride like no other. A lightweight chassis teams up with the most competitive 125 cc 2-stroke engine in its class, delivering superior agility and power to fulfil the demands of any young adrenaline seeker. This 2-stroke screamer is the ultimate entry point into the pro ranks and a sure-fire way to add to the trophy collection.

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KICKSTART YOUR RACING CAREER

KTM 125 SX

TECHNICAL DETAILS

ENGINE

TRANSMISSION

6-speed


STARTER

Kickstarter


STROKE

54.5 mm


BORE

54 mm


CLUTCH

Multi-plate clutch, Brembo hydraulics


DISPLACEMENT

124.8 cm³


EMS

Kokusan

CHASSIS

WEIGHT (WITHOUT FUEL)

87.5 kg


TANK CAPACITY (APPROX.)

7.5 l


FRONT BRAKE DISC DIAMETER

260 mm


REAR BRAKE DISC DIAMETER

220 mm


FRONT BRAKE

Disc brake


REAR BRAKE

Disc brake


CHAIN

5/8 x 1/4"


FRAME DESIGN

Central double-cradle-type 25CrMo4 steel


FRONT SUSPENSION

WP XACT-USD, Ø 48 mm


GROUND CLEARANCE

375 mm


REAR SUSPENSION

WP XACT Monoshock with linkage


SEAT HEIGHT

850 mm


STEERING HEAD ANGLE

63.9 °


SUSPENSION TRAVEL (FRONT)

310 mm


SUSPENSION TRAVEL (REAR)

300 mm

© 2023 AJ's Motorcycles. 4 Purcell Street Shepparton, VIC

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