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 YAMAHA YZ125 Parts & Accessories

Fits Your Machine

Displaying parts for your 2003 YAMAHA YZ125

Change or remove machine

See stock sizes for this machine

  • Front Tire:80/100X21
  • Rear Tire:100/90X19
  • Front Sprocket:13 Tooth
  • Rear Sprocket:49 Tooth
  • Chain:520X112
  • Spark Plug:BR9EG
  • Main jet:410
  • Pilot Jet:40

How To Rebuild the Top End on a Yamaha YZ125 & YZ125X

RM YouTube ChannelSUBSCRIBE
Tusk Wheel Bearing Seals$6.99MSRP: $9.99 You save 30%
Rated 4.88 out of five stars.★★★★★
Polisport Air Box Mud Flap$14.88 – $15.99MSRP: $18.99 You save up to 22%
Rated 4.89 out of five stars.★★★★★
All Balls Counter Shaft Seal Kit$18.57MSRP: $20.63 You save 10%
Rated 4.74 out of five stars.★★★★★
Steahly Heavy Flywheel Weight$164.95
Rated 4.74 out of five stars.★★★★★
Tusk Universal Big Bar Clamp and Bar Kit$72.99 – $192.88MSRP: $101.94 – $207.94 You save up to 28%
Rated 4.47 out of five stars.★★★★⯪
Pro X Piston Wristpin Bearing$13.90MSRP: $15.79 You save 12%
Rated 4.90 out of five stars.★★★★★
Highline Recreation Style 2 Original Tugger Lift Strap, Front$17.99
Rated 4.83 out of five stars.★★★★★
Tusk Titanium Axle Adjuster Bolts$15.99MSRP: $24.99 You save 36%
Rated 4.88 out of five stars.★★★★★
Pro X Complete Gasket Set$56.79MSRP: $74.73 You save 24%
Rated 4.45 out of five stars.★★★★⯪
Polisport Armadillo 2-Stroke Pipe Guard$53.88MSRP: $80.99 You save 33%
Rated 3.63 out of five stars.★★★⯪☆
Pivot Works Steering Stem Bearing Kit$49.88MSRP: $66.23 You save 25%
Rated 4.80 out of five stars.★★★★★
Motion Pro Titan Throttle Tube$21.99
Rated 4.55 out of five stars.★★★★⯪
Hot Rods Water Pump Repair Kit$26.06MSRP: $28.95 You save 10%
Rated 4.66 out of five stars.★★★★★
Attack Graphics Gripper Seat Cover$32.99MSRP: $39.99 You save 18%
Rated 4.26 out of five stars.★★★★☆
Pro X Ignition Cover Gasket$6.18MSRP: $7.02 You save 12%
Rated 4.94 out of five stars.★★★★★
Tusk Front Brake Pin Kit$3.99MSRP: $4.99 You save 20%
Rated 4.66 out of five stars.★★★★★
Rocky Mountain ATV/MC Pro Series Seat Cover$35.99MSRP: $45.99 You save 22%
Rated 4.43 out of five stars.★★★★⯪
Renthal Aluminum 7/8" Handlebar$94.88 – $104.88
Rated 4.84 out of five stars.★★★★★
Fasst Rear Brake Return Spring Kit$19.99
Rated 4.44 out of five stars.★★★★⯪
Tusk Rear Brake Caliper Rebuild Kit$18.99MSRP: $24.99 You save 24%
Rated 4.71 out of five stars.★★★★★
Tusk Swing Arm Chain Adjuster Bolt Repair Kit$15.99MSRP: $29.99 You save 47%
Rated 4.33 out of five stars.★★★★⯪
FMF Pipe Spring & O-Ring Kit$11.99
Rated 4.47 out of five stars.★★★★⯪
Motion Pro Rear Sprocket Bolt and Nut Fastening Kit$12.99
Rated 4.91 out of five stars.★★★★★
FMF Power Core II Shorty Silencer$179.99MSRP: $199.99 You save 10%
Rated 4.84 out of five stars.★★★★★
V-Force 3 Reed Valve$141.99MSRP: $158.95 You save 11%
Rated 4.80 out of five stars.★★★★★
RK 520EXW Gold XW-RING Chain$8.06MSRP: $8.95 You save 10%
Rated 4.79 out of five stars.★★★★★
All Balls Brake Caliper Piston Kit$19.58 – $35.27MSRP: $21.75 – $39.19 You save 10%
Rated 4.78 out of five stars.★★★★★
Supersprox Stealth Rear Sprocket$107.96MSRP: $119.95 You save 10%
Rated 4.77 out of five stars.★★★★★
IMS SuperStock Foot Pegs$108.00
Rated 4.57 out of five stars.★★★★⯪
Tusk Impact Wheel Bearing and Seal Kit - Front$21.99MSRP: $25.99 You save 15%
Rated 4.43 out of five stars.★★★★⯪
Seal Savers Zip-On Fork Covers$29.95
Rated 4.32 out of five stars.★★★★☆
Odi V2 System Snap On Throttle Cam$3.50
Rated 4.92 out of five stars.★★★★★
Motion Pro OEM Style Clutch Perch$23.99
Rated 3.88 out of five stars.★★★★☆
Pivot Works Shock Rebuild Kit$89.88MSRP: $119.27 You save 25%
Rated 4.41 out of five stars.★★★★⯪
Polisport Side Panels$36.88MSRP: $54.99 You save 33%
Rated 4.28 out of five stars.★★★★☆
Enduro Engineering Radiator Guards$161.95MSRP: $179.95 You save 10%
Rated 4.68 out of five stars.★★★★★
Tusk Impact Universal Linkage Guard$32.50MSRP: $39.50 You save 18%
Rated 4.68 out of five stars.★★★★★
IMS Fuel Tank$411.85
Rated 4.36 out of five stars.★★★★⯪
CV4 High Pressure Radiator Cap$32.99 – $36.99MSRP: $38.84 – $43.17 You save up to 14%
Rated 4.90 out of five stars.★★★★★
FMF Gold Series Pipe, "Fatty Moto"$269.99MSRP: $299.99 You save 10%
Rated 4.80 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.★★★★⯪
Vertex Engine Rebuild Kit$510.36MSRP: $637.95 You save 20%
Rated 5.00 out of five stars.★★★★★
Vortex 520 Steel Front Sprocket$23.76MSRP: $27.95 You save 15%
Rated 4.80 out of five stars.★★★★★
EBC Clutch Spring Set$11.79
Rated 4.78 out of five stars.★★★★★
ASV F4 Series Brake Lever$95.00
Rated 4.85 out of five stars.★★★★★
JT Self Cleaning Competition Brake Rotor, Rear$41.16MSRP: $46.25 You save 11%
Rated 4.00 out of five stars.★★★★☆
Tusk Billet Aluminum Steering Stem Nut$9.99MSRP: $14.99 You save 33%
Rated 4.86 out of five stars.★★★★★
Rox Speed FX 2" Handlebar Risers$76.88 – $84.88MSRP: $95.95 – $101.95 You save up to 20%
Rated 4.83 out of five stars.★★★★★
V-Force 3 Replacement Reeds$58.99MSRP: $64.95 You save 9%
Rated 4.76 out of five stars.★★★★★
Pro X Crankshaft Bearing and Seal Kit$55.32MSRP: $61.47 You save 10%
Rated 4.89 out of five stars.★★★★★
Fastway Evo 4 Foot Pegs$167.90
Rated 4.77 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.★★★★⯪
RM Cash ProgramParts Finder