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Discussion Starter · #1 ·
I'm just curious as to how much weight are people who have F8's are putting in their primarys and what spring they have as well. RPM's?
 

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76 Gram heavy hitters, stock Cat yellow spring, 58/48 Helix with Bikeman red
secondary spring 7900 rpm
 

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what is the targeted shift RPM on an F8 with the BMP F8 pipe mod? 7950?
 
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