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The KTM 125 SX is the most compact and lightest of the big bikes, with a thrilling ride that no other bike can match. The most competitive 125 cc 2-stroke engine in its class teams up with a lightweight frame to satisfy the expectations of any young adrenaline junkie. The ultimate pro entrance and ...  show more


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HOT RODS CRANKSHAFT KTM SX 125 2001-2015
£427.33
The part every other engine component depends on.
HOT RODS KTM SX 125 2000-2006 WATER PUMP KIT
£32.74
Don't cook your top-end rebuild - fix cooling first.
KTM 2-STROKE FMF FATTY GOLD EXHAUST
£305.03
The upgrade that lets every other part breathe properly.
KTM 2-STROKE FMF POWERCORE 2 REAR SILENCER
£178.37
Frees up the power the rest of your build is chasing.
KTM 2-STROKE FMF POWERCORE 2 SHORTY REAR SILENCER
£178.37
Frees up the power the rest of your build is chasing.
KTM EXC SX 125 / 144 / 150 / 200 1998 - 2022 BIG END BEARING 22 X 28 X 15.8
£27.65
The small part that decides whether your bottom end survives or fails.
Currently unavailable View product →
KTM SX / EXC / XC 125 / 144 / 150 / 200 2001-2022 MAIN BEARING & SEAL KIT K065
£77.12
The part that decides whether your rebuild lasts one season or five.
KTM SX / EXC 125 1998-2001 FULL ENGINE GASKET KIT
£51.84
One kit, every seal, no repeat trips to the parts counter.
KTM SX / EXC 125 1998-2001 TOP END GASKET KIT
£27.72
The seal that makes sure the rest of the job holds.
KTM SX 125 / 144 / 150 / 200 2001 - 2015 OUTPUT SHAFT KIT
£22.11
The last link in the chain between your engine and the ground.
Currently unavailable View product →
KTM SX 125 / 150 2016 - 2019 / TC125 2016-2022 OUTPUT SHAFT KIT OSK0057 HOT RODS
£22.11
The last link in the chain between your engine and the ground.
Currently unavailable View product →
KTM SX 125 2002 - 2015 TOP END GASKET KIT
£48.66
The seal that makes sure the rest of the job holds.
KTM SX 125 2002-2011 PDS SHOCK KIT
£76.07
The bearings that decide how plush your rear end really feels.
KTM SX 125 2002-2015 EXC 125 2002-2005 FULL ENGINE GASKET KIT
£80.33
One kit, every seal, no repeat trips to the parts counter.
KTM SX-EXC125 VFORCE3 REED VALVE SYSTEM SX 125 V FORCE 1998 - 2015
£169.00
Instant throttle response, straight off the bottom.
KTM SX/EXC 125/144/150/200 1998 - 2015 FULL ENGINE OIL SEAL KIT
£61.95
The unglamorous parts that keep everything else properly sealed.
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