
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
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