Show #473 - Pro Circuit KX450 Stage One Build

Show #473 - Pro Circuit KX450 Stage One Build

From Rocky Mountain ATV/MC Keefer Tested by Kris Keefer

March 30, 2026 · 53 min

About this episode

Kris Keefer discusses the Pro Circuit KX450 Stage One engine build and its impact on performance and comfort.

Keefer and Pro Circuit team up to create a stage one engine build that gives the rider a noticeable amount of power on the track but still is smooth enough to keep an "easy to ride feel". What is involved into such a build? Is it comparable to an SR? Can you run pump fuel? All of those questions and more will be answered in this show. Keefer will also break down what Pro Circuit can do to your suspension and how you can get more comfort as well as hold up within your KX450 SHOWA suspension.

People in this episode

Host: Keefer

Topics covered

  • motorcycle performance
  • engine tuning
  • suspension setup
  • racing
  • KX450

Keywords

  • stage one engine build
  • power on the track
  • easy to ride feel
  • pump fuel
  • Pro Circuit suspension

Mentioned in this episode

Products: KX450, KX450 SHOWA, Pro Circuit, SHOWA suspension

More episodes of Rocky Mountain ATV/MC Keefer Tested

Explore listener stats, chart rankings, contacts and more on the Rocky Mountain ATV/MC Keefer Tested podcast page.