Update: Our Privacy Policy has recently been updated on December 6, 2023.

Cookies: To give our customers the best shopping experience, our website uses cookies. By clicking continue, you acknowledge our use of cookies. Learn More

2003 KTM 450 SX 4-Stroke Parts & Accessories

Fits Your Machine

Displaying parts for your 2003 KTM 450 SX 4-Stroke

Change or remove machine

See stock sizes for this machine

  • Front Tire:80/100X21
  • Rear Tire:110/90X19
  • Front Sprocket:14 Tooth
  • Rear Sprocket:50 Tooth
  • Chain:520X118
  • Spark Plug:DCPR8E
  • Main jet:185
  • Pilot Jet:40
Tusk Motorcycle Flag Mount Adaptor$9.99MSRP: $10.99 You save 9%
Rated 3.08 out of five stars.★★★☆☆
Motion Pro Rear Sprocket Bolt and Nut Fastening Kit$12.99
Rated 4.91 out of five stars.★★★★★
Enduro Engineering Clutch Slave Cylinder Guard$29.95
Rated 4.85 out of five stars.★★★★★
All Balls Brake Caliper Piston Kit$19.58 – $32.36MSRP: $21.75 – $35.95 You save 10%
Rated 4.78 out of five stars.★★★★★
Seal Savers Zip-On Fork Covers$29.95
Rated 4.32 out of five stars.★★★★☆
Pro X Titanium Intake Valve$63.44MSRP: $83.48 You save 24%
Rated 4.33 out of five stars.★★★★⯪
CV4 High Pressure Radiator Cap$34.88MSRP: $44.90 You save 22%
Rated 4.90 out of five stars.★★★★★
RK 520EXW Gold XW-RING Chain$8.06MSRP: $8.95 You save 10%
Rated 4.79 out of five stars.★★★★★
Galfer Brake Pad - Sintered Double H$33.75MSRP: $37.50 You save 10%
Rated 4.62 out of five stars.★★★★⯪
Acerbis Super Motard Front Fender$25.88MSRP: $29.95 You save 14%
Rated 4.57 out of five stars.★★★★⯪
Tusk Billet Aluminum Steering Stem Nut$9.99MSRP: $14.99 You save 33%
Rated 4.86 out of five stars.★★★★★
Tusk Impact Universal Linkage Guard$32.50MSRP: $39.50 You save 18%
Rated 4.68 out of five stars.★★★★★
JT Self Cleaning Competition Brake Rotor, Front$41.16MSRP: $46.25 You save 11%
Rated 4.50 out of five stars.★★★★⯪
JT Self Cleaning Competition Brake Rotor, Rear$41.19MSRP: $46.25 You save 11%
Rated 4.00 out of five stars.★★★★☆
Pro X Intake Valve Stem Seal$4.92MSRP: $5.47 You save 10%
Rated 4.96 out of five stars.★★★★★
EBC Clutch Spring Set$11.79
Rated 4.78 out of five stars.★★★★★
Pro X Crankshaft Bearing and Seal Kit$132.17MSRP: $146.85 You save 10%
Rated 4.89 out of five stars.★★★★★
IMS Fuel Tank$347.50
Rated 4.36 out of five stars.★★★★⯪
Fastway Evo 4 Foot Pegs$167.90
Rated 4.77 out of five stars.★★★★★
Works Connection Fork Bleeders$29.95MSRP: $35.95 You save 17%
Rated 4.55 out of five stars.★★★★⯪
Polisport Side Panels$36.88MSRP: $54.99 You save 33%
Rated 4.28 out of five stars.★★★★☆
All Balls Fork Seals$15.28MSRP: $16.98 You save 10%
Rated 3.88 out of five stars.★★★★☆
Pro X Exhaust Valve Stem Seal$4.92MSRP: $5.47 You save 10%
Rated 4.96 out of five stars.★★★★★
Rox Speed FX 2" Handlebar Risers$92.88MSRP: $113.95 You save 18%
Rated 4.83 out of five stars.★★★★★
Twin Air Power Flow Intake System Replacement Filter$38.99MSRP: $42.95 You save 9%
Rated 4.74 out of five stars.★★★★★
All Balls Carburetor Mid Body Gasket Kit$21.51MSRP: $23.90 You save 10%
Rated 4.78 out of five stars.★★★★★
Vortex 520 Steel Front Sprocket$25.46MSRP: $29.95 You save 15%
Rated 4.80 out of five stars.★★★★★
Odi CFT Podium 1 1/8" Handlebars$116.95 – $121.95MSRP: $134.95 – $139.95 You save 13%
Rated 4.75 out of five stars.★★★★★
Kibblewhite Black Diamond Exhaust Valve$32.37MSRP: $42.99 You save 25%
Rated 4.90 out of five stars.★★★★★
Pro X Air Filter$23.78MSRP: $27.33 You save 13%
Rated 4.61 out of five stars.★★★★⯪
All Balls Rear Brake Caliper Bolt Kit$12.34MSRP: $13.71 You save 10%
Rated 4.89 out of five stars.★★★★★
Fasst Flexx 1 1/8" Handlebar$399.99
Rated 4.81 out of five stars.★★★★★
Seal Savers Fork Covers$20.99 – $21.99
Rated 4.27 out of five stars.★★★★☆
KTM OEM Brake Pads$66.60 – $67.96MSRP: $78.35 – $79.95 You save 15%
Pro X Fork Seals$23.21MSRP: $29.75 You save 22%
Rated 4.66 out of five stars.★★★★★
Braking Race Sintered Compound CM46 Brake Pads$39.88MSRP: $47.95 You save 17%
Rated 4.63 out of five stars.★★★★⯪
ASV F4 Series Standard Clutch Lever$95.00
Rated 4.38 out of five stars.★★★★⯪
Pro X Fork & Dust Seal Kit$49.99MSRP: $59.50 You save 16%
Rated 4.43 out of five stars.★★★★⯪
Primary Drive Alloy Kit & Gold Plated MX Race Chain$104.99MSRP: $134.93 You save 22%
Rated 4.86 out of five stars.★★★★★
Pro X Clutch Master Cylinder Repair Kit$28.56MSRP: $33.21 You save 14%
Rated 4.69 out of five stars.★★★★★
ASV C6 Series Brake Lever$120.00
Rated 4.60 out of five stars.★★★★⯪
Polisport Radiator Scoops$39.88MSRP: $54.99 You save 27%
Rated 4.39 out of five stars.★★★★⯪
All Balls Float Bowl Gasket$9.38MSRP: $10.42 You save 10%
Rated 4.95 out of five stars.★★★★★
R & D Racing Flex Jet (Remote Fuel Screw)$32.88
Rated 4.80 out of five stars.★★★★★
All Balls Accelerator Pump Rebuild Kit$20.05MSRP: $22.28 You save 10%
Rated 4.74 out of five stars.★★★★★
Primary Drive Countershaft Dome Spring Washer$9.99MSRP: $14.99 You save 33%
Rated 4.71 out of five stars.★★★★★
Warp 9 Oversized MX Foot Pegs$99.00 – $105.99
Rated 4.65 out of five stars.★★★★⯪
Factory Effex All Grip Seat Cover$42.88MSRP: $49.95 You save 14%
Rated 4.45 out of five stars.★★★★⯪
All Balls Clutch Master Cylinder Repair Kit$31.81MSRP: $35.34 You save 10%
Rated 4.44 out of five stars.★★★★⯪
Enduro Engineering Billet Shock Spanner Wrench$22.99MSRP: $24.95 You save 8%
Rated 4.40 out of five stars.★★★★⯪
KTM OEM Oil Filter O-Ring$3.56MSRP: $4.18 You save 15%
Rated 5.00 out of five stars.★★★★★
Race Tech Fork Seals$49.99
Rated 4.72 out of five stars.★★★★★
RM Cash ProgramParts Finder