Skip to product information
1 of 3


Wiseco Top End Kit Pro-Lite PK1198 - 66.40mm - Yamaha YZ250 02-22 / YZ250X 16-21

Regular price $187.74 USD
Regular price $240.76 USD Sale price $187.74 USD
Sale Sold out

Wiseco Top End Kit Pro-Lite 66.40mm (Std) Yamaha YZ250 2002-2021 / YZ250X 16-21

Wiseco Forged Piston have been setting the performance standards for motocross 2-stroke engines for years. Now Wiseco offers a great performance top end kit for your Yamaha YZ250 or YZ250X. Wiseco give you all you need to perform your top end maintenance. What’s in the kit a performance Forged Pro-Lite piston, rings, wrist pin, top end gasket kit, c-clips and wrist pin bearing.

Each Pro-Lite forged piston is manufactured in the USA in Wiseco own plants. The 2-stroke Pro-Light piston is them CNC machined for optimal shape and profile to ensure peak performance and durability.

Specifications - Top end Kit PK1198:

  • 2614CD - 66.40 mm Ring Set
  • 804M06640 - Yamaha YZ250 '99-19 ProLite 2614CD
  • B1003 - Top End Bearing 18 x 22 x 21.8mm
  • CW18 - 18mm Round Wire Locks - Set of Two
  • Ring - Set
  • S508 - Piston Pin 18mm x 2.106" Non Chromed TW
  • W5978 - Top End Gasket Kit Yamaha YZ250 '02-22 / YZ250X 16-21


    • Each Pro-Light piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Supercross, Motocross, GNCC, Superbike, and more
    • Wiseco piston kits feature a complete top end gasket kit that gives you everything you need to complete your rebuild from premium materials.
    • Forged pistons offer superior strength to weight ratio utilizing aerospace alloy.
    • High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power.
    • Part number - PK1198

    Click to see all the other performance parts for your Yamaha YZ250 / YZ250X

    Moto-House MX - Choice of Champions Located in Clermont/Groveland Fl. The area where Motocross lives day in and out, many of the top riders in the world train. We live Motocross.