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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Cometic power valve spacer
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[QUOTE="biker, post: 173235, member: 19938"] I'm getting my cylinder back from eric next week. the bike is a 2001 CR 250 and the cylinder is being ported for more low end. I'm going to add the power valve spacer but I'm not sure which one to get. They offer 1) .375" thick 2) .625 thick (will not work with stock pipe) 3) .500 thick I have and FMF SST pipe, but may go to a gnarly if I can sell the SST. What are the advantages of the different thicknesses. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Cometic power valve spacer
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