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Dirt Bike Brands - Other
High comp piston vs. std in a CRF450R
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[QUOTE="cthowards, post: 1119050, member: 67091"] Thanks Rich. I am going to have a local shop install the valves and springs and inspect the seats, etc. I already have the Kibblewhite valves and will be purchasing the Kibblewhite springs. The shop indicated that I did not have to go with the Kibblewhite springs but that they could offer alternative springs that would not rob horsepower or cause the valves to slam against the seat. I believe the shop to be reputable, but they also have a MX race team so perhaps they push for maximum performance and not so much for durability (which is what I'm looking for). In any event, I am convinced that the Kibblewhite valves and springs are the way to go. Thanks for being so firm and consistent in your recommendations as it seems as though it is very easy to get lead in the wrong direction on what valves and springs work best. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
High comp piston vs. std in a CRF450R
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