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1987 YAMAHA YZ125 Parts & Accessories

Fits Your Machine

Displaying parts for your 1987 YAMAHA YZ125

Change or remove machine

See stock sizes for this machine

  • Front Tire:80/100X21
  • Rear Tire:100/100X18
  • Front Sprocket:13 Tooth
  • Rear Sprocket:50 Tooth
  • Chain:520X112
  • Spark Plug:B9EG

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

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Tusk Clutch Lever$5.99MSRP: $9.99 You save 40%
Rated 4.52 out of five stars.★★★★⯪
Primary Drive Front Sprocket$8.79 – $9.99MSRP: $12.99 – $13.99 You save up to 32%
Rated 4.79 out of five stars.★★★★★
NGK Iridium Sparkplug$9.99MSRP: $13.04 You save 23%
Rated 4.88 out of five stars.★★★★★
Primary Drive 520 ORH Gold X-Ring Chain$3.99 – $66.88MSRP: $5.99 – $79.95 You save up to 16%
Rated 4.66 out of five stars.★★★★★
Tusk Wheel Bearing and Seal Kit$10.99 – $18.99MSRP: $16.99 – $25.99 You save up to 27%
Rated 4.59 out of five stars.★★★★⯪
JT Front Sprocket$8.99
Rated 4.85 out of five stars.★★★★★
JT Rear Steel Sprocket$16.88 – $25.99
Rated 4.73 out of five stars.★★★★★
All Balls Wheel Bearing Kit$14.03 – $22.80MSRP: $15.59 – $25.33 You save 10%
Rated 4.52 out of five stars.★★★★⯪
Tusk 520 Gold X-Ring Chain$3.99 – $67.99MSRP: $5.99 – $79.99 You save up to 15%
Rated 4.76 out of five stars.★★★★★
EBC Brake Pad - Sintered Metal "R" Series$35.00MSRP: $36.85 You save 5%
Rated 4.66 out of five stars.★★★★⯪
Tusk Handlebar Risers$19.99 – $20.99MSRP: $22.99 – $24.99 You save up to 16%
Rated 4.79 out of five stars.★★★★★
Primary Drive Rear Steel Sprocket$17.88 – $22.99MSRP: $29.99 You save up to 40%
Rated 4.73 out of five stars.★★★★★
Tusk Tach/Hour Meter$14.99MSRP: $22.99 You save 35%
Rated 4.62 out of five stars.★★★★⯪
Tusk 520 O-Ring Chain$3.50 – $48.99MSRP: $4.99 – $63.95 You save up to 23%
Rated 4.76 out of five stars.★★★★★
NGK G-Rated Sparkplug$4.99MSRP: $5.95 You save 16%
Rated 4.86 out of five stars.★★★★★
Tusk High Pressure Radiator Cap with Temperature Gauge$24.99MSRP: $29.99 You save 17%
Rated 4.24 out of five stars.★★★★☆
Primary Drive Sprocket Bolt and Nut Kit$6.99MSRP: $9.99 You save 30%
Rated 4.75 out of five stars.★★★★★
Primary Drive 520 ORM O-Ring Chain$3.50 – $47.88MSRP: $4.99 – $64.95 You save up to 26%
Rated 4.77 out of five stars.★★★★★
Tusk Magnetic Drain Bolt$7.49MSRP: $11.95 You save 37%
Rated 4.72 out of five stars.★★★★★
Tusk Fork Seal Driver$34.99MSRP: $44.99 You save 22%
Rated 4.92 out of five stars.★★★★★
Tusk T-10 Aluminum 7/8" Handlebar$37.99MSRP: $52.95 You save 28%
Rated 4.43 out of five stars.★★★★⯪
Tusk Counter Shaft Seal Kit$15.99MSRP: $22.99 You save 30%
Rated 4.53 out of five stars.★★★★⯪
Pivot Works Front Wheel Bearing Kit$24.65MSRP: $27.39 You save 10%
Rated 4.67 out of five stars.★★★★★
Tusk Steering Stem Bearing Kit$33.99MSRP: $39.99 You save 15%
Rated 4.69 out of five stars.★★★★★
Tusk Engine Kill Switch$9.99MSRP: $12.99 You save 23%
Rated 4.56 out of five stars.★★★★⯪
Tusk Brake Shoe - Carbon$10.99MSRP: $14.99 You save 27%
Rated 4.50 out of five stars.★★★★⯪
JT Racelite Aluminum Rear Sprocket$28.88 – $30.88MSRP: $31.58 – $34.08 You save 9%
Rated 4.88 out of five stars.★★★★★
Tusk Spoke Torque Wrench Kit$103.99MSRP: $139.99 You save 26%
Rated 4.69 out of five stars.★★★★★
Flex-Hone Cylinder Ball-Hone$47.69
Rated 4.93 out of five stars.★★★★★
Primary Drive Chain Roller$10.99 – $13.99MSRP: $14.99 – $17.99 You save up to 22%
Rated 4.09 out of five stars.★★★★☆
Motion Pro Fork Seal Bullet$5.99
Rated 4.49 out of five stars.★★★★⯪
Tusk Kick Starter$74.99MSRP: $134.99 You save 44%
Rated 4.82 out of five stars.★★★★★
Lexx Swivel Exhaust Spring$2.99MSRP: $3.99 You save 25%
Rated 5.00 out of five stars.★★★★★
PC Racing Filter Skins$15.88
Rated 4.65 out of five stars.★★★★⯪
Tusk Low-Profile Magnetic Drain Bolt$8.99MSRP: $10.99 You save 18%
Rated 4.60 out of five stars.★★★★⯪
Tusk Shock Bearing Kit$19.99 – $24.99MSRP: $24.99 – $29.99 You save up to 17%
Rated 4.45 out of five stars.★★★★⯪
Motion Pro Throttle Tube$6.99
Rated 4.62 out of five stars.★★★★⯪
EBC Brake Shoe - Organic$22.78MSRP: $23.98 You save 5%
Rated 4.37 out of five stars.★★★★⯪
Tusk 520 Gold Plated Race Chain$4.49 – $56.99MSRP: $4.99 – $68.99 You save up to 17%
Primary Drive 520 Gold Plated MX Race Chain$4.49 – $54.99MSRP: $4.95 – $67.95 You save up to 19%
Rated 4.61 out of five stars.★★★★⯪
All Balls Steering Stem Bearing Kit$38.19MSRP: $42.43 You save 10%
Rated 4.60 out of five stars.★★★★⯪
Tusk Aluminum Tire Iron with Axle Wrench$16.99MSRP: $22.99 You save 26%
Rated 4.65 out of five stars.★★★★⯪
Shock Sox Fork Seal Guards$23.95 – $26.95MSRP: $26.99 – $28.99 You save up to 11%
Rated 4.29 out of five stars.★★★★☆
Tusk Spark Plug Wrench$8.99MSRP: $10.99 You save 18%
Rated 4.77 out of five stars.★★★★★
All Balls Shock Bearing Kit$25.30 – $29.87MSRP: $28.11 – $33.19 You save 10%
Rated 4.52 out of five stars.★★★★⯪
DID 520 Chain$3.95 – $50.88
Rated 4.13 out of five stars.★★★★☆
Primary Drive Steel Kit & O-Ring Chain$76.91MSRP: $107.93 You save 29%
Rated 4.73 out of five stars.★★★★★
Primary Drive Steel Kit & Gold X-Ring Chain$93.87MSRP: $122.93 You save 24%
Rated 4.74 out of five stars.★★★★★
Tusk High Pressure Radiator Cap$15.99MSRP: $19.99 You save 20%
Rated 4.81 out of five stars.★★★★★
Bolt Hub-Savers Double Locked Sprocket Fastening Kit$10.99MSRP: $11.99 You save 8%
Rated 4.87 out of five stars.★★★★★
All Balls Front Brake Caliper Rebuild Kit$24.94MSRP: $27.71 You save 10%
Rated 4.88 out of five stars.★★★★★
All Balls Chain Roller$16.98 – $17.33MSRP: $18.87 – $19.25 You save 10%
Rated 4.48 out of five stars.★★★★⯪
Tusk Skid Plate Foam$10.95 – $11.95MSRP: $14.95 You save up to 27%
Rated 4.63 out of five stars.★★★★⯪
ProTaper SE 7/8" Handlebar$76.88
Rated 4.79 out of five stars.★★★★★
Motion Pro Clutch Lever$11.99
Rated 4.57 out of five stars.★★★★⯪
All Balls Fuel Petcock Rebuild Kit$15.45MSRP: $17.17 You save 10%
Rated 4.61 out of five stars.★★★★⯪
Primary Drive 520 ORH X-Ring Chain$3.99 – $60.88MSRP: $5.99 – $71.95 You save up to 15%
Rated 4.64 out of five stars.★★★★⯪
Tusk Motorcycle Flag Mount Adaptor$9.99MSRP: $10.99 You save 9%
Rated 3.08 out of five stars.★★★☆☆
Tusk Petcock Rebuild Kit$8.99MSRP: $12.99 You save 31%
Rated 4.86 out of five stars.★★★★★
Pro X Connecting Rod Kit$98.37MSRP: $129.43 You save 24%
Rated 4.93 out of five stars.★★★★★
Tusk Shock Seal Bullet Tool$12.99MSRP: $15.99 You save 19%
Rated 4.85 out of five stars.★★★★★
Tusk Billet Start/Kill Switch$14.99MSRP: $29.99 You save 50%
Rated 4.28 out of five stars.★★★★☆
All Balls Counter Shaft Seal Kit$18.57MSRP: $20.63 You save 10%
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.★★★★⯪
Tusk Swing Arm Chain Adjuster Bolt Repair Kit$15.99MSRP: $29.99 You save 47%
Rated 4.33 out of five stars.★★★★⯪
Tusk Titanium Sprocket Bolt Kit$39.99MSRP: $48.99 You save 18%
Rated 5.00 out of five stars.★★★★★
Polisport Armadillo 2-Stroke Pipe Guard$53.88MSRP: $80.99 You save 33%
Rated 3.63 out of five stars.★★★⯪☆
Motion Pro Rear Sprocket Bolt and Nut Fastening Kit$12.99
Rated 4.91 out of five stars.★★★★★
Seal Savers Zip-On Fork Covers$29.95
Rated 4.32 out of five stars.★★★★☆
Renthal Aluminum 7/8" Handlebar$94.88 – $104.88
Rated 4.84 out of five stars.★★★★★
Tusk Universal Big Bar Clamp Kit$29.99MSRP: $35.99 You save 17%
Rated 4.65 out of five stars.★★★★⯪
Tusk Impact Universal Linkage Guard$32.50MSRP: $39.50 You save 18%
Rated 4.68 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.★★★★★
RK 520EXW Gold XW-RING Chain$8.06MSRP: $8.95 You save 10%
Rated 4.79 out of five stars.★★★★★
Motion Pro OEM Style Clutch Perch$20.99
Rated 3.88 out of five stars.★★★★☆
IMS SuperStock Foot Pegs$108.00
Rated 4.57 out of five stars.★★★★⯪
Seal Savers Fork Covers$20.99MSRP: $22.95 You save 9%
Rated 4.27 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.★★★★★
Vortex 520 Steel Front Sprocket$23.76MSRP: $27.95 You save 15%
Rated 4.80 out of five stars.★★★★★
Tusk Spoke Torque Wrench Replacement Head$11.99MSRP: $14.99 You save 20%
Rated 4.43 out of five stars.★★★★⯪
Primary Drive Steel Kit & X-Ring Chain$89.23MSRP: $114.93 You save 22%
Rated 4.70 out of five stars.★★★★★
Tusk Aluminum Pipe Guard$25.99MSRP: $29.99 You save 13%
Rated 4.27 out of five stars.★★★★☆
Motion Pro Ringer Fork Seal Driver$52.99
Rated 4.88 out of five stars.★★★★★
Mylers High Pressure Radiator Cap$17.99MSRP: $20.00 You save 10%
Rated 4.76 out of five stars.★★★★★
Polisport Free Flow UFX Front Fender$32.88
Rated 4.57 out of five stars.★★★★⯪
IMS Pro-Series Foot Pegs$118.65
Rated 4.77 out of five stars.★★★★★
Tusk Adjustable Fork Seal Driver$38.99MSRP: $54.99 You save 29%
Rated 3.91 out of five stars.★★★★☆
Race Tech Fork Seals$39.99
Rated 4.72 out of five stars.★★★★★
Odi Podium 7/8" Handlebars$76.88 – $79.88MSRP: $84.95 – $89.95 You save up to 11%
Rated 5.00 out of five stars.★★★★★
PC Racing Quick Release Filter Skins$20.88
Rated 4.52 out of five stars.★★★★⯪
Closeout ItemBikeMaster Sprocket Bolt and Nut Kit$7.99MSRP: $14.16 You save 44%
Rated 4.00 out of five stars.★★★★☆
Mika Metals 7/8" Handlebars$79.88MSRP: $84.95 You save 6%
Rated 4.18 out of five stars.★★★★☆
Pro X Aluminum Rear Sprocket$49.12MSRP: $64.63 You save 24%
Rated 4.78 out of five stars.★★★★★
Motion Pro Fork Seal Bullet Set$27.50
Rated 4.64 out of five stars.★★★★⯪
Pro X Counter Shaft Seal Kit$16.59MSRP: $19.07 You save 13%
Rated 4.77 out of five stars.★★★★★
Pro X Front Brake Master Cylinder Rebuild Kit $20.87MSRP: $23.19 You save 10%
Rated 4.67 out of five stars.★★★★★
Cometic Clutch Cover Gasket$7.93
Rated 4.82 out of five stars.★★★★★
Pro X Rear Sprocket Bolt Set$9.39MSRP: $10.92 You save 14%
Rated 4.62 out of five stars.★★★★⯪
Rox Speed FX Pro-Offset Elite Block Risers$78.88MSRP: $99.95 You save 21%
Rated 4.81 out of five stars.★★★★★
Race Tech Outer Fork Bushings$38.99
Rated 4.85 out of five stars.★★★★★
All Balls Crankshaft Seal Kit$22.70MSRP: $25.22 You save 10%
Rated 3.82 out of five stars.★★★★☆
Race Tech Inner Fork Bushings$42.88
Rated 4.95 out of five stars.★★★★★
Polisport SM Fender Supermotard UniversalFront Fender$12.88 – $22.88MSRP: $29.99 You save up to 57%
Tusk Float Bowl Wrench$6.99MSRP: $9.99 You save 30%
Rated 4.83 out of five stars.★★★★★
Pro X Piston Replacement Circlip$1.95
Rated 4.76 out of five stars.★★★★★
EBC Brake Rotor, Front$119.99MSRP: $126.31 You save 5%
Rated 4.39 out of five stars.★★★★⯪
P3 Carbon Skid Plate Foam$12.95
Rated 4.50 out of five stars.★★★★⯪
Polisport SM Line Supermotard UFX Free Flow Front Fender$27.88MSRP: $32.99 You save 15%
Rated 4.60 out of five stars.★★★★⯪
Race Tech Shock Seal Head Setting Tool$54.99
Rated 4.79 out of five stars.★★★★★
Polisport Chain Roller$12.99MSRP: $15.99 You save 19%
Rated 3.86 out of five stars.★★★★☆
Race Tech Fork Dust Seals$41.64
Rated 4.75 out of five stars.★★★★★
Bolt CRF Style Hub-Savers Double Locked Sprocket Fastening Kit$10.99MSRP: $11.99 You save 8%
Rated 4.90 out of five stars.★★★★★
Motion Pro Pro Plug Socket$28.99
Rated 4.80 out of five stars.★★★★★
RK 520EXW XW-RING Chain$8.95
Rated 4.68 out of five stars.★★★★★
Ride Engineering Billet Engine Kill/Start Switch$53.96MSRP: $59.95 You save 10%
Rated 4.13 out of five stars.★★★★☆
Wiseco Nylon Honing Brush$93.92
Rated 4.60 out of five stars.★★★★⯪
DRC Fork Seal Driver Kit$84.95
Rated 4.50 out of five stars.★★★★⯪
Fasst Spoke Wrench Head$20.99
Rated 4.89 out of five stars.★★★★★
Race Tech Shaft Holding Tool$74.99
Rated 4.60 out of five stars.★★★★⯪
Motion Pro T-6 Combo Lever$39.99
Rated 4.87 out of five stars.★★★★★
Warp 9 Titanium Sprocket Bolt Set$56.99
Rated 4.10 out of five stars.★★★★☆
Mika Metals Pro Series Hybrid 7/8" Oversized Handlebars$109.88MSRP: $119.95 You save 8%
Rated 5.00 out of five stars.★★★★★
Mylers Earless High Pressure Radiator Cap$17.99MSRP: $20.00 You save 10%
Rated 4.86 out of five stars.★★★★★
Ride Engineering Tach/Hour Meter with Bracket$31.46MSRP: $34.95 You save 10%
Rated 3.50 out of five stars.★★★⯪☆
Klutchbox Original Bar Pad$64.95
Rated 5.00 out of five stars.★★★★★
Moose Racing Magnetic Drain Plug$18.95
Rated 4.73 out of five stars.★★★★★
Moose Racing Engine Kill Switch$24.95
Rated 4.74 out of five stars.★★★★★
Rox Speed FX 3 1/2" ATV Handlebar Risers$94.88MSRP: $110.95 You save 14%
Rated 5.00 out of five stars.★★★★★
Tusk Piston Ring Compressor$22.99MSRP: $29.99 You save 23%
Rated 5.00 out of five stars.★★★★★
Hammerhead Kick Starters$151.19MSRP: $167.99 You save 10%
Rated 4.36 out of five stars.★★★★⯪
Race Tech Shock Seal Bullet Tool$29.88
Rated 4.50 out of five stars.★★★★⯪
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