02-07-2014, 07:15 AM #1
Best Springs to Run 9100-9400 RPM's?
Thinking of running re-grinds & spinning to around 91-9400ish. What springs could make this relatively safe? Not sure if the Riva's would provide too much pressure.
Was wondering about the R&D Super Singles. Does anyone have experience with these, or have another good recommendation?
02-07-2014, 10:29 AM #2
I have run the Riva valve train upgrade with Riva valves up to 9300 RPM with no issues. Many others are doing the same and doing it with stock valves.
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