KTM 450 SX Parts & Accessories

Everything we stock that fits the KTM 450 SX (2003–2013): 35 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 450 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 $28.31 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 — Husaberg 450FCBrake Caliper Piston Kit — Husaberg 450FC $43.94 Brake Caliper Piston Kit — Husqvarna FC 250Brake Caliper Piston Kit — Husqvarna FC 250 $26.57

Drivetrain for the KTM 450 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 Springs — CSK136EBC Clutch Springs — CSK136 $12.98 EBC Clutch Friction Plate Kit — CKF5612EBC Clutch Friction Plate Kit — CKF5612 $176.43 JT Sprockets 520 Steel Front Sprocket, 11T (JTF1901.11)JT Sprockets 520 Steel Front Sprocket, 11T (JTF1901.11) $12.99 JT Sprockets 520 Steel Front Sprocket, 13T (JTF1901.13)JT Sprockets 520 Steel Front Sprocket, 13T (JTF1901.13) $12.99 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 520 Steel Front Sprocket, 14T (JTF1901.14)JT Sprockets 520 Steel Front Sprocket, 14T (JTF1901.14) $12.99

Suspension for the KTM 450 SX

Fork Bushing Kit — Husaberg 450FC (2005) + 52Fork Bushing Kit — Husaberg 450FC (2005) + 52 $61.64 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 — Gas-Gas MC85 1714Swingarm Bearing Kit — Gas-Gas MC85 1714 $102.33 Swingarm Bearing Kit — Beta RC 4T 450 (2025) +Swingarm Bearing Kit — Beta RC 4T 450 (2025) + $75.40 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 450 SX

Clutch Master Cylinder Rebuild Kit — HusabergClutch Master Cylinder Rebuild Kit — Husaberg $39.82 Clutch Master Cylinder Rebuild Kit — KTM EXC 450Clutch Master Cylinder Rebuild Kit — KTM EXC 450 $40.21 Clutch Slave Cylinder Rebuild Kit — Husaberg/KTM (29 Models) — (PN 18-6009)Clutch Slave Cylinder Rebuild Kit — Husaberg/KTM (29 Models) — (PN 18-6009) $44.89 Steering Stem Bearing Kit — Beta RR 2T 125Steering Stem Bearing Kit — Beta RR 2T 125 $44.60

Exhaust for the KTM 450 SX

FMF Powercore 4 — Slip-On — KTM 450 EXC (2004-2006), KTM 450 MXC (2004-2006) + 8 more, 4FMF Powercore 4 — Slip-On — KTM 450 EXC (2004-2006), KTM 450 MXC (2004-2006) + 8 more, 4 $359.99 Big Gun EVO-R Slip-On Muffler — KTM 450 SX / 505 SX (2009-2013), 4-StrokeBig Gun EVO-R Slip-On Muffler — KTM 450 SX / 505 SX (2009-2013), 4-Stroke $409.99 Big Gun EVO-R Full Exhaust System — KTM 450 SX / 505 SX (2009-2013), 4-StrokeBig Gun EVO-R Full Exhaust System — KTM 450 SX / 505 SX (2009-2013), 4-Stroke $687.99

Maintenance for the KTM 450 SX

Hiflofiltro Oil Filter — HF155Hiflofiltro Oil Filter — HF155 $5.23 Hiflofiltro Oil Filter — HF157Hiflofiltro Oil Filter — HF157 $5.23

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 450 SX, tell us. Accuracy is the whole point.