Predminibike
New member
I have a big valve predator 32mm intake 28mm 36lb valve springs titanium keepers need racing cut to length pushrods need racing 252 cam 26mm nibbi racing carb I have another bike with same set up except the only difference is it has 26lb valve springs and stock head and it's smokes the bike with the big valve head so what's the advantage of the big valves