KTM 125 SX Parts & Accessories

Everything we stock that fits the KTM 125 SX (1993–2026): 127 parts, each verified against manufacturer fitment data, grouped by category. Prices and stock are live. Not sure on year or trim? Use the bike finder to confirm your exact match.

Brakes for the KTM 125 SX

Master Cylinder Rebuild Kit — Gas-Gas ES 700 $28.07 Master Cylinder Rebuild Kit — Husaberg 550FC $28.07 Master Cylinder Rebuild Kit — Husaberg 450FC $28.31 Master Cylinder Rebuild Kit — Husaberg FE250 $28.07 Master Cylinder Rebuild Kit — KTM Adventure 640 $28.31 Master Cylinder Rebuild Kit — Husaberg 390FE $28.07 Master Cylinder Rebuild Kit — Husaberg 390FE $28.31 Master Cylinder Rebuild Kit — Gas-Gas EX250 $49.45 Master Cylinder Rebuild Kit — Gas-Gas EX250 $37.79 Brake Caliper Rebuild Kit — Gas-Gas EX250 (2022) $31.23 Brake Caliper Rebuild Kit — Husaberg 450FC $30.99 Brake Caliper Rebuild Kit — Gas-Gas EX250 (2022) $30.99 Brake Caliper Rebuild Kit — KTM EXC 125 $31.23 Brake Caliper Bolt Kit — Can-Am Outlander 1000 $11.56 Brake Caliper Bolt Kit — Ducati DESMO 450 MX $15.49 Brake Caliper Rebuild Kit — KTM Adventure 390 $31.23 Brake Caliper Piston Kit — Gas-Gas EX250 (2022) $47.86 Brake Caliper Piston Kit — Husaberg 450FC $43.94 Brake Caliper Piston Kit — Husqvarna FC 250 $26.57 Brake Caliper Piston Kit — KTM EXC 125 $24.35 Brake Caliper Rebuild Kit — Husaberg 450FC $30.99 JT Sprockets Rotor — 220mm — Husqvarna/KTM Rear (JTD6025SC01) $38.99 JT Sprockets Rotor — 260mm — Husqvarna/KTM Front (JTD6026SC01) $38.99

Drivetrain for the KTM 125 SX

Upgraded Wheel Bearing Kit — Husaberg 390FE $83.25 Wheel Bearing Kit — Gas-Gas MC85 1714 $27.43 EBC Clutch Friction Plate Kit — CKF5611 $129.78 Renthal Front Sprocket Grooved 14T — 6 Makes — (PN 292--520-14GP) $34.16 Renthal Front Sprocket Grooved 14T — GasGas/Husqvarna/KTM — (PN 292U-520-14GP) $43.16 Renthal Front Sprocket Grooved 15T — 6 Makes — (PN 292--520-15GP) $34.16 Wheel Bearing Kit — Honda CRF250L (2017-2020) + $21.01 Wheel Bearing Kit — Ducati DESMO 450 MX (2026) + $32.65 Wheel Bearing Kit — BMW HP4 (2013-2014) + 302 $28.74 Wheel Bearing Kit — Beta RC 4T 450 (2025) + 356 $34.08

Suspension for the KTM 125 SX (30 available)

Fork Bushing Kit — KTM EXC 125 (2000-2001) + 29 $63.54 Fork Bushing Kit — Husaberg 450FC (2005) + 52 $61.64 Fork Bushing Kit — KTM SX 125 (2008-2012) + 17 $67.29 Fork Oil Seal Kit — BMW F800GS (2013-2017) + 101 $19.12 Fork Oil Seal Kit — Gas-Gas EC250 (2012) + 174 $19.12 Fork Oil Seal Kit — Beta RR 2T 125 (2019-2023) + $18.24 Fork Oil Seal Kit — KTM Adventure 640 $19.12 Fork Oil Seal Kit — Beta RR 4T 250 (2005-2007) + $19.12 Fork Dust Seal Kit — Beta RR 2T 125 (2019-2023) $19.50 Fork Dust Seal Kit — KTM Adventure 640 $20.62 Fork Dust Seal Kit — BMW F800GS (2013-2017) + $21.01 Fork Dust Seal Kit — Beta RR 4T 250 (2005-2007) $21.01 Suspension Linkage Bearing Kit — Gas-Gas EC250 $109.36 Fork Bushing Kit — Husaberg 450FC (2003-2004) + $73.15 Fork Bushing Kit — Husaberg TE250 (2012) + 29 $55.07 Fork Bushing Kit — Husaberg FE250 (2014) + 36 $51.75 Fork Bushing Kit — Husqvarna FC 250 (2017-2020) $52.28 Suspension Linkage Bearing Kit — Gas-Gas EC350F $120.65 Fork Bushing Kit — KTM Adventure R Rally 790 $43.59 Suspension Linkage Bearing Kit — Gas-Gas EC125 — 3 Makes — (PN 27-1217) $120.65 Suspension Linkage Bearing Kit — KTM EGS 125 $111.63 Swingarm Bearing Kit — Gas-Gas MC85 1714 $102.33 Swingarm Bearing Kit — KTM EGS 125 (1998-1999) + $105.80 Swingarm Bearing Kit — Beta RC 4T 450 (2025) + $75.40

Controls for the KTM 125 SX

Clutch Master Cylinder Rebuild Kit — Husaberg $39.82 Clutch Master Cylinder Rebuild Kit — KTM $49.80 Clutch Master Cylinder Rebuild Kit — Gas-Gas EC $39.82 Clutch Slave Cylinder Rebuild Kit — Husqvarna TC $44.89 Clutch Slave Cylinder Rebuild Kit — KTM EXC 200 $44.89 Clutch Slave Cylinder Kit with Piston — GasGas/Husqvarna/KTM — (PN 18-6014) $73.31 Motion Pro Clutch Lever — 14-9001 $51.99 Motion Pro Brake Lever — 14-9007 $28.99 Motion Pro Clutch Lever — 14-9010 $56.99 Motion Pro Clutch Lever — 14-9011 $56.99 Steering Stem Bearing Kit — Husqvarna FC 250 $44.60 Motion Pro Brake Lever — 14-1012 $32.99 Steering Stem Bearing Kit — Beta RR 2T 125 $44.60

Exhaust for the KTM 125 SX (25 available)

FMF Fatty Pipe — KTM 125 SX (2000-2003), KTM 125SX (2000-2003), 2-Stroke $269.99 FMF Powercore 2 — KTM 125 SX (1998-2003), KTM 125SX (1998-2003), 2-Stroke $179.99 FMF Fatty Pipe — KTM 125 SX (2004-2010), KTM 125SX (2004-2010) + 4 more, 2-Stroke $269.99 FMF Factory — Pipe — KTM 125 SX (2004-2010), KTM 125SX (2004-2010) + 3 more, 2 — (see $269.99 FMF Powercore 2 — Slip-On — KTM 125 SX (2004-2010), KTM 125SX (2004-2010) + 3 more, 2 — (see $179.99 FMF Powercore 2 — KTM 125 SX (2004-2010), KTM 125SX (2004-2010) + 3 more, 2-Stroke $179.99 FMF Turbinecore 2 — Slip-On — KTM 125 SX (2004-2010), KTM 125SX (2004-2010) + 3 more, 2 — (see $197.99 FMF Fatty Pipe — Husqvarna TC 125 (2014-2015), Husqvarna TE 125 (2015-2016) + 5 more $269.99 FMF Factory — Pipe — Husqvarna TC 125 (2014-2015), Husqvarna TE 125 (2015-2016) + 4 $269.99 FMF Powercore 2 — Slip-On — Husqvarna TC 125 (2014-2015), Husqvarna TE 125 (2015-2016) + 4 $179.99 FMF Powercore 2 — Husqvarna TC 125 (2014-2015), Husqvarna TE 125 (2015-2016) + 4 — (see $179.99 FMF Turbinecore 2 — Slip-On — Husqvarna TC 125 (2014-2015), Husqvarna TE 125 (2015-2016) + 4 $197.99 FMF Fatty Pipe — Husqvarna TC 125 (2016-2018), Husqvarna TE 150 (2017-2019) + 6 more $269.99 FMF Factory — Pipe — Husqvarna TC 125 (2016-2018), Husqvarna TE 150 (2017-2019) + 5 $269.99 FMF Powercore 2 — Slip-On — Husqvarna TC 125 (2016-2018), Husqvarna TE 150 (2017-2019) + 5 $179.99 FMF Powercore 2 — Husqvarna TC 125 (2016-2018), Husqvarna TE 150 (2017-2019) + 6 — (see $179.99 FMF Turbinecore 2 — Slip-On — Husqvarna TC 125 (2016-2018), Husqvarna TE 150 (2017-2019) + 5 $197.99 FMF Fatty Pipe — GasGas MC 125 (2021-2023), GasGas MC125 (2021-2023) + 7 more, 2 — (see $269.99 FMF Factory — Pipe — GasGas MC 125 (2021-2023), Husqvarna TC 125 (2019-2022) + 3 — (see $269.99 FMF Rev Pipe — GasGas MC 125 (2021-2023), GasGas MC125 (2021-2023) + 7 — (see $269.99 FMF Powercore — Slip-On — GasGas MC 125 (2021-2023), Husqvarna TC 125 (2019-2022) + 3 $215.99 FMF Turbinecore — Slip-On — GasGas MC 125 (2021-2023), Husqvarna TC 125 (2019-2022) + 3 $242.99 FMF Powercore 2 — Slip-On — GasGas MC 125 (2021-2023), GasGas MC125 (2021-2023) + 6 more, 2 $179.99 FMF Powercore 2 — GasGas MC 125 (2021-2023), GasGas MC125 (2021-2023) + 7 more, 2 — (see $179.99

Engine for the KTM 125 SX

Cometic Gasket Kit — KTM 125SX (2016-2019) $46.88

Protection for the KTM 125 SX

Polisport Plastic — KTM SX-125/150/200 (2016-2018), KTM SX-250 (2017-2018) & 5 m $18.99 All Balls Racing Chain Roller — KTM $23.16

Graphics for the KTM 125 SX

Factory Effex EVO Shroud Graphic Kit — KTM 125 SX (2013-2014), KTM 150 SX (2013-2014) & 7 more $38.99

Maintenance for the KTM 125 SX

Twin Air Standard Air Filter — KTM 125 SX (1981) $29.08 Twin Air Standard Air Filter — KTM 125 EXC (1994-1997), KTM 125 SX (1994-1997) $29.08 Twin Air Standard Air Filter — KTM 125 EXC (1998-2003), KTM 125 SX (1998-2003) $29.08 Twin Air Standard Air Filter — KTM 125 EXC (1998-2003), KTM 125 SX (1998-2003) $36.99 Twin Air Standard Air Filter — KTM 105 SX (2006-2011), KTM 125 EXC (2004-2007) $29.08 Twin Air Pre-Filter — KTM 105 SX (2006-2011), KTM 125 EXC (2004-2007) + 18 more $21.99 Twin Air Standard Air Filter — KTM 105 SX (2006-2011), KTM 125 EXC (2004-2007) $36.99 Twin Air Standard Air Filter — KTM 125 EXC (2008-2010), KTM 125 SX (2007-2009) $29.08 Twin Air Standard Air Filter — KTM 125 EXC (2008-2009), KTM 125 SX (2007-2009) $36.99 Twin Air Standard Air Filter — Husaberg TE 125 (2011-2012), Husaberg TE 250 $29.08 Twin Air Standard Air Filter — Husaberg TE 125 (2011-2012), Husaberg TE 250 $36.99 Twin Air Standard Air Filter — Husaberg FE 250 (2013), Husaberg FE 350 (2013) + $29.08 Twin Air Standard Air Filter — Husaberg FE 250 (2013), Husaberg FE 350 (2013) + $36.99 Twin Air Pre-Filter — Husaberg FE 250 (2013), Husaberg FE 350 (2013) + 48 more $21.99 Twin Air Power-Flow Kit — Husqvarna TC 125 (2014-2015), Husqvarna TC 85 $189.99 Twin Air Standard Air Filter — KTM 105 SX (2006-2011), KTM 125 EXC (1997-2006) $29.08 Twin Air Standard Air Filter — Fantic XE 125 (2023-2025), Fantic XX 125 $29.08 Twin Air Standard Air Filter — Husqvarna TC 125 (2016-2018), Husqvarna TC 250 $29.08 Twin Air Power-Flow Kit — Fantic XE 125 (2023-2024), Fantic XX 125 (2023-2024) $189.99 Twin Air Standard Air Filter — Fantic XE 125 (2023-2024), Fantic XX 125 $29.08 Twin Air Standard Air Filter — Husqvarna TC 125 (2014-2015), Husqvarna TC 250 $29.08 Twin Air Standard Air Filter — GasGas 125 MC (2024-2026), GasGas 250 EC $29.08

Fitment is anchored on the manufacturer's own application data and verified before it goes live. If you spot anything that looks off for your KTM 125 SX, tell us. Accuracy is the whole point.