2026 KTM 125 SX vs 2022 Yamaha YZ125X

Side-by-side specs. Differences are highlighted. Blank = not yet verified for that year-model (we don’t guess).

Spec2026 KTM 125 SX2022 Yamaha YZ125X
Class125cc 2-stroke125cc 2-stroke
Displacement124.8cc
Cooling
InductionKeihin EFI, throttle body 39 mmPorted DOHC four-valve per cylinder head with dual overhead cams and twin throttle bodies
Power valve
Transmission6-speed5-speed
Front travel310 in200 in
Rear travel300 in165 in
Front brake300mm
Rear brake245mm
Front wheel
Rear wheel
Seat height958 in34.2 in
Weight145 lb
MSRP

Highlighted (blue) rows differ between the two. Verified manufacturer data; see each bike’s page for sources. Torque/fluid specs are on the individual pages (service-manual only).