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  See more parts for Kawasaki KDX50
Select the year of your Kawasaki KDX50:
Wiseco Top End Kit 41.00mm for Kawasaki KFX 50 2003-2017, KDX 50, Suzuki JR50, LT50 - PK1665

Overview

Upgrade your ride with the Wiseco Complete Top End Piston Kit, meticulously crafted for select models of Kawasaki and Suzuki motorcycles. Designed specifically for the Kawasaki KFX 50 (2003-2017), Kawasaki KDX 50 (2003-2006), Suzuki LT50 Quadrunner (1984-1987), and Suzuki JR50 (1978-2006), this kit ensures a seamless rebuild with high-quality components tailored to enhance performance and reliability. Each kit includes everything necessary for a successful top-end rebuild, so you can hit the track or trails with confidence.

Fitment

  • Kawasaki KFX 50 (2003-2017)
  • Kawasaki KDX 50 (2003-2006)
  • Suzuki LT50 Quadrunner (1984-1987)
  • Suzuki JR50 (1978-2006)

Technical Specs

  • Displacement: 50cc
  • Bore (Standard): 41.00mm
  • Bore (Actual): 41.00mm
  • Bore (Oversize): STD
  • Stroke: 37.80mm
  • Cylinders: 1

Customer Insights

“Installed this kit on my 2015 KFX 50 — the performance improvement is noticeable, with smoother acceleration and a more responsive throttle. Highly recommend for anyone looking to refresh their engine!”

Closing Summary

Whether you're rebuilding for daily rides or preparing for competitive events, the Wiseco Complete Top End Piston Kit delivers the quality and precision needed to elevate your motorcycle’s performance. With verified fitment and top-notch components, this kit is a reliable choice for enthusiasts who demand the best.

Other Part Numbers:
Wiseco #PK1665

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Kawasaki KDX50 2003-2006 Base
Kawasaki KFX50 2003-2009, 2013-2017 Base
Suzuki JR50 1978-2006 Base
Suzuki LT50 QuadRunner 1984-1987 Base

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Who is Wiseco Pistons?

Wiseco Pistons is an aftermarket company established in 1940 and started in Cleveland, Ohio when Clyde Wiseman designed to create his pistons for himself and his friends. Soon after, people started ordering the same piston and became a favorite of many motorsport enthusiasts. 

Today, Wiseco’s has become a world-renowned brand for piston and other high-performance products.

Hightech Manufacturing Facility

Over the years, the company grew and relocated its corporate headquarters in Mentor, Ohio. It now boasts over 150,000 square feet of state-of-the-art forging facility with CNC machining equipment. Wiseco also has fully stocked, strategically located distribution centers all over Canada and Europe to cater to their customers wherever they are.

Global Footprint

As an internationally acclaimed brand, Wiseco gained customers' trust in Europe, Africa, South America, Asia, and Australia. Wiseco is now considered the world leader in manufacturing hi-performance, forged pistons for motorcycles, snowmobile, motorcycle, ATV, outboard marine, and automotive markets.

Purchase Wiseco Pistons at Vivid Racing

If you search for quality pistons that would provide you with optimum performance, then Wiseco Pistons is the right brand for you. It is designed for those who want the best. With 75 years of experience under their belt, you can be sure that Wiseco Pistons is a brand you could trust. 

To know more about Wiseco Pistons and what they can offer, visit Vivid Racing and check out their list of products that would fit your specific needs.

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