Need Assistance?
Legendary Service... Ask Your Friends - Since 1969
800.969.7501
Over 160K Powersport Items - In-Stock and ready to ship today! View tires, apparel, helmets, exhaust and more!

Wiseco Racers Choice Supermini Big Bore Piston Kit - PK1186

  • Part #:
    PK1186
  • Manufacturer Part #:
    PK1186

MSRP Price: $180.95

Our Price: $162.86

You Save:
$18.09 (10%)
1 on Hand

Overview of Wiseco Racers Choice Supermini Big Bore Piston Kit - PK1186

  • Durability, longevity and increased horsepower
  • Innovative forging design and piston skirt provide maximum horsepower and torque
  • Lightweight wrist pins enable faster revs and quicker throttle response
  • Contain all the necessary components for overboring or rebuilding your top end
  • Ceramic Composite-Cylinder resleeving or replating required for oversizes
  • Cylinder sleeves must be purchased separately


  • Included Items:
    (1) W5353 Top End Gasket set
    (1) 767M05250 Piston Kit
    (1) B1012 Top End Bearing

    Our pistons, rings and kits are sold by application and bore size. Please note that STANDARD and OVERSIZES are not indicated. To get the correct part, you must know the standard bore size to make sure you are ordering either the standard or correct amount of oversize that you need. If you have any questions, please call Technical Service.

Specs for Wiseco Racers Choice Supermini Big Bore Piston Kit - PK1186

Bore Size 52.5 mm
Type Top End Rebuild
Type Top End Kit w/o Cylinder
Units Kit
Weight 0.75 lbs

Cross reference number(s):

09030213

Specs for Wiseco Racers Choice Supermini Big Bore Piston Kit - PK1186

Bore Size 52.5 mm
Type Top End Rebuild
Type Top End Kit w/o Cylinder
Units Kit
Weight 0.75 lbs

Fitment for Wiseco Racers Choice Supermini Big Bore Piston Kit - PK1186

See if this part fits your ride

Part PK1186 fits the following machines

Yamaha
  • 2001 Yamaha YZ80
  • 2000 Yamaha YZ80
  • 1999 Yamaha YZ80
  • 1998 Yamaha YZ80
  • 1997 Yamaha YZ80
  • 1996 Yamaha YZ80
  • 1995 Yamaha YZ80
  • 1994 Yamaha YZ80
  • 1993 Yamaha YZ80
There are no reviews for this item. Write Review
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 1 answer
What is the displacement with this kit?
A shopper on Apr 25, 2017
BEST ANSWER: 103.5

Instructions and Manuals for Wiseco Racers Choice Supermini Big Bore Piston Kit - PK1186