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Baseline Jetting

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Wanting to get a baseline for a 2002 CR125. I am getting ready to put in a Boyesen Rad Valve and was wanting advice on the main jet. Stock should be a 400 but I have not checked it yet. Boyesen's website call for a 380 main 32.5 pilot and 2.15 turns out on the air screw. I have an FMF/SST pipe and a Turbine Core 2 silencer with a UNI filter. If anyone is running this setup could advise me on this I would appreciate it.


RAD Valve (RAD-01G)

Straight from their website - 380 Main, 3rd clip, 32.5 Slow Jet, 2 turns out on the air screw.

Edited by Bryan_Barker

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