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1977 YAMAHA YZ125 Parts & Accessories

Fits Your Machine

Displaying parts for your 1977 YAMAHA YZ125

See stock sizes for this machine

  • Front Tire:3.00X21
  • Rear Tire:4.10X18
  • Front Sprocket:12 Tooth
  • Rear Sprocket:51 Tooth
  • Chain:520X104
  • Spark Plug:B10EG

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

RM YouTube ChannelSUBSCRIBE
NGK Iridium Sparkplug$9.99MSRP: $13.04 You save 23%
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Tusk Wheel Bearing and Seal Kit$9.99 – $13.99MSRP: $14.99 – $18.99 You save up to 26%
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All Balls Wheel Bearing Kit$11.84 – $17.42MSRP: $13.16 – $19.35 You save 10%
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Tusk 520 Gold X-Ring Chain$3.99 – $65.99MSRP: $5.99 – $77.99 You save up to 15%
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NGK G-Rated Sparkplug$4.99MSRP: $5.95 You save 16%
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Tusk Fork and Dust Seal Kit$26.99MSRP: $31.99 You save 16%
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Tusk 520 O-Ring Chain$3.50 – $46.99MSRP: $4.99 – $61.95 You save up to 24%
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Tusk T-10 Aluminum 7/8" Handlebar$37.99MSRP: $52.95 You save 28%
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Primary Drive 520 ORM O-Ring Chain$3.50 – $45.88MSRP: $4.99 – $62.95 You save up to 27%
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Tusk Tach/Hour Meter$14.99MSRP: $22.99 You save 35%
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Tusk Steering Stem Bearing Kit$33.99MSRP: $38.99 You save 13%
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Polisport Fork Boots$11.99
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Flex-Hone Cylinder Ball-Hone$47.69
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Tusk Spark Plug Wrench$8.99MSRP: $10.99 You save 18%
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Tusk Counter Shaft Seal Kit$15.99MSRP: $22.99 You save 30%
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Lexx Swivel Exhaust Spring$2.99MSRP: $3.99 You save 25%
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All Balls Steering Stem Bearing Kit$38.19MSRP: $42.43 You save 10%
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Tusk Aluminum Tire Iron with Axle Wrench$16.99MSRP: $22.99 You save 26%
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All Balls Fork and Dust Seal Kit$32.35MSRP: $35.94 You save 10%
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DID 520 Chain$3.95 – $46.86
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Tusk Skid Plate Foam$10.95 – $11.95MSRP: $14.95 You save up to 27%
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ProTaper SE 7/8" Handlebar$76.88
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Motion Pro Clutch Lever$11.99
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Primary Drive 520 ORH X-Ring Chain$3.99 – $57.88MSRP: $5.99 – $69.95 You save up to 17%
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Tusk Billet Start/Kill Switch$14.99MSRP: $29.99 You save 50%
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Tusk Motorcycle Flag Mount Adaptor$9.99MSRP: $10.99 You save 9%
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RK 520 Chain$28.88
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Renthal Aluminum 7/8" Handlebar$94.88 – $104.88
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Tusk Universal Big Bar Clamp Kit$29.99MSRP: $35.99 You save 17%
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Polisport Armadillo 2-Stroke Pipe Guard$53.88MSRP: $80.99 You save 33%
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Tusk Piston Ring Compressor$22.99MSRP: $29.99 You save 23%
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K & L Fork Seals$12.82MSRP: $14.78 You save 13%
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Tusk Impact Universal Linkage Guard$32.50MSRP: $39.50 You save 18%
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RK 520EXW Gold XW-RING Chain$8.06MSRP: $8.95 You save 10%
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Odi Podium 7/8" Handlebars$76.88 – $79.88MSRP: $84.95 – $89.95 You save up to 11%
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Rox Speed FX 2" Handlebar Risers$76.88 – $84.88MSRP: $95.95 – $101.95 You save up to 20%
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Tusk Adjustable Fork Seal Driver$38.99MSRP: $54.99 You save 29%
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Tusk Aluminum Pipe Guard$25.99MSRP: $29.99 You save 13%
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Mika Metals 7/8" Handlebars$79.88MSRP: $84.95 You save 6%
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RK 520EXW XW-RING Chain$8.95
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Closeout ItemBikeMaster 520 Precision Roller Chain$15.88MSRP: $23.15 You save 31%
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Tusk Float Bowl Wrench$6.99MSRP: $9.99 You save 30%
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Rox Speed FX Pro-Offset Elite Block Risers$78.88MSRP: $99.95 You save 21%
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Wiseco Nylon Honing Brush$93.92
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Motion Pro Pro Plug Socket$28.99
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P3 Carbon Skid Plate Foam$12.95
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Motion Pro T-6 Combo Lever$39.99
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Ride Engineering Tach/Hour Meter with Bracket$31.46MSRP: $34.95 You save 10%
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Ride Engineering Billet Engine Kill/Start Switch$53.96MSRP: $59.95 You save 10%
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Klutchbox Original Bar Pad$64.95
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