KTM 125 SX Parts & Accessories

Everything we stock that fits the KTM 125 SX (2003–2010): 65 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 700Master Cylinder Rebuild Kit — Gas-Gas ES 700 $28.07 Master Cylinder Rebuild Kit — Husaberg 550FCMaster Cylinder Rebuild Kit — Husaberg 550FC $28.07 Master Cylinder Rebuild Kit — Husaberg 450FCMaster Cylinder Rebuild Kit — Husaberg 450FC $28.31 Master Cylinder Rebuild Kit — Husaberg FE250Master Cylinder Rebuild Kit — Husaberg FE250 $28.07 Master Cylinder Rebuild Kit — Husaberg 390FEMaster Cylinder Rebuild Kit — Husaberg 390FE $28.07 Master Cylinder Rebuild Kit — Husaberg 390FEMaster Cylinder Rebuild Kit — Husaberg 390FE $28.31 Brake Caliper Rebuild Kit — Gas-Gas EX250 (2022)Brake Caliper Rebuild Kit — Gas-Gas EX250 (2022) $31.23 Brake Caliper Rebuild Kit — Husaberg 450FCBrake Caliper Rebuild Kit — Husaberg 450FC $30.99 Brake Caliper Rebuild Kit — Gas-Gas EX250 (2022)Brake Caliper Rebuild Kit — Gas-Gas EX250 (2022) $30.99 Brake Caliper Bolt Kit — Ducati DESMO 450 MXBrake Caliper Bolt Kit — Ducati DESMO 450 MX $15.49 Brake Caliper Piston Kit — Gas-Gas EX250 (2022)Brake Caliper Piston Kit — Gas-Gas EX250 (2022) $47.86 Brake Caliper Piston Kit — Husaberg 450FCBrake Caliper Piston Kit — Husaberg 450FC $43.94 Brake Caliper Piston Kit — Husqvarna FC 250Brake Caliper Piston Kit — Husqvarna FC 250 $26.57 JT Sprockets Rotor — 220mm — Husqvarna/KTM Rear (JTD6025SC01)JT Sprockets Rotor — 220mm — Husqvarna/KTM Rear (JTD6025SC01) $38.99 JT Sprockets Rotor — 260mm — Husqvarna/KTM Front (JTD6026SC01)JT Sprockets Rotor — 260mm — Husqvarna/KTM Front (JTD6026SC01) $38.99

Drivetrain for the KTM 125 SX

Upgraded Wheel Bearing Kit — Husaberg 390FEUpgraded Wheel Bearing Kit — Husaberg 390FE $83.25 Wheel Bearing Kit — Gas-Gas MC85 1714Wheel Bearing Kit — Gas-Gas MC85 1714 $27.43 EBC Clutch Friction Plate Kit — CKF5611EBC Clutch Friction Plate Kit — CKF5611 $129.78 Renthal Front Sprocket Grooved 14T — 6 Makes — (PN 292--520-14GP)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)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)Renthal Front Sprocket Grooved 15T — 6 Makes — (PN 292--520-15GP) $34.16 JT Sprockets Steel Front Sprocket — JTF1901.11 (11T)JT Sprockets Steel Front Sprocket — JTF1901.11 (11T) $12.99 JT Sprockets Steel Front Sprocket — JTF1901.13 (13T)JT Sprockets Steel Front Sprocket — JTF1901.13 (13T) $12.99 JT Sprockets Steel Rear Sprocket — JTR897.40 (40T)JT Sprockets Steel Rear Sprocket — JTR897.40 (40T) $36.99 JT Sprockets Steel Rear Sprocket — JTR897.41 (41T)JT Sprockets Steel Rear Sprocket — JTR897.41 (41T) $36.99 JT Sprockets Steel Rear Sprocket — JTR897.46 (46T)JT Sprockets Steel Rear Sprocket — JTR897.46 (46T) $36.99 JT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.51SC (51T) — (seeJT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.51SC (51T) — (see $36.99 Wheel Bearing Kit — BMW HP4 (2013-2014) + 302Wheel Bearing Kit — BMW HP4 (2013-2014) + 302 $28.74 Wheel Bearing Kit — Beta RC 4T 450 (2025) + 356Wheel Bearing Kit — Beta RC 4T 450 (2025) + 356 $34.08 JT Sprockets Steel Front Sprocket — JTF1901.14 (14T)JT Sprockets Steel Front Sprocket — JTF1901.14 (14T) $12.99 JT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.45SC (45T) — (seeJT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.45SC (45T) — (see $36.99 JT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.48SC (48T) — (seeJT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.48SC (48T) — (see $36.99 JT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.50SC (50T) — (seeJT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.50SC (50T) — (see $36.99 JT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.52SC (52T) — (seeJT Sprockets Self-Cleaning Steel Rear Sprocket — JTR897.52SC (52T) — (see $36.99

Suspension for the KTM 125 SX

Fork Bushing Kit — Husaberg 450FC (2005) + 52Fork Bushing Kit — Husaberg 450FC (2005) + 52 $61.64 Fork Bushing Kit — KTM SX 125 (2008-2012) + 17Fork Bushing Kit — KTM SX 125 (2008-2012) + 17 $67.29 Fork Oil Seal Kit — Gas-Gas EC250 (2012) + 174Fork Oil Seal Kit — Gas-Gas EC250 (2012) + 174 $19.12 Fork Dust Seal Kit — Beta RR 2T 125 (2019-2023)Fork Dust Seal Kit — Beta RR 2T 125 (2019-2023) $19.50 Fork Bushing Kit — Husaberg 450FC (2003-2004) +Fork Bushing Kit — Husaberg 450FC (2003-2004) + $73.15 Swingarm Bearing Kit — KTM EGS 125 (1998-1999) +Swingarm Bearing Kit — KTM EGS 125 (1998-1999) + $105.80 Swingarm Bearing Kit — Husaberg FE250Swingarm Bearing Kit — Husaberg FE250 $73.94 Fork Oil & Dust Seal Kit — Gas-Gas EC125 — 5 Makes — (PN 56-146)Fork Oil & Dust Seal Kit — Gas-Gas EC125 — 5 Makes — (PN 56-146) $39.78

Controls for the KTM 125 SX

Clutch Master Cylinder Rebuild Kit — HusabergClutch Master Cylinder Rebuild Kit — Husaberg $39.82 Clutch Master Cylinder Rebuild Kit — KTMClutch Master Cylinder Rebuild Kit — KTM $49.80 Clutch Master Cylinder Rebuild Kit — Gas-Gas ECClutch Master Cylinder Rebuild Kit — Gas-Gas EC $39.82 Clutch Slave Cylinder Rebuild Kit — Husqvarna TCClutch Slave Cylinder Rebuild Kit — Husqvarna TC $44.89 Steering Stem Bearing Kit — Beta RR 2T 125Steering Stem Bearing Kit — Beta RR 2T 125 $44.60

Exhaust for the KTM 125 SX

FMF Fatty Pipe — KTM 125 SX (2000-2003), KTM 125SX (2000-2003), 2-StrokeFMF 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-StrokeFMF 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-StrokeFMF 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 — (seeFMF 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 — (seeFMF 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-StrokeFMF 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 — (seeFMF Turbinecore 2 — Slip-On — KTM 125 SX (2004-2010), KTM 125SX (2004-2010) + 3 more, 2 — (see $197.99

Protection for the KTM 125 SX

All Balls Racing Chain Roller — KTMAll Balls Racing Chain Roller — KTM $23.16

Maintenance for the KTM 125 SX

Twin Air Standard Air Filter — KTM 125 EXC (1998-2003), KTM 125 SX (1998-2003)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)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)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 moreTwin 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)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)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)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 250Twin 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 250Twin Air Standard Air Filter — Husaberg TE 125 (2011-2012), Husaberg TE 250 $36.99 Twin Air Standard Air Filter — KTM 105 SX (2006-2011), KTM 125 EXC (1997-2006)Twin Air Standard Air Filter — KTM 105 SX (2006-2011), KTM 125 EXC (1997-2006) $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.