LEGO Posted February 2, 2021 Report Share Posted February 2, 2021 Hey guys. Im new to the forum so bear with me plz. I am n the middle of rebuilding my Banshee from a stock stroke and cylinder to a ported 521cc super serval with a 10mil stroke. Initially I wanted to do a 443cc 7 mil stroke serval/assassins but we already have one of those in the family, so I'm looking for something different. The bike will be used strictly for dunes riding and the occasional drag race. Would the 521 have a massive advantage over a 443 or do you guys think it would be overkill. Bike has all the supporting mods necessary, but I am torn between a +2 or +4 swing arm. I am an aggressive rider, and I like having a good agile bike underneath me that can turn quickly and that I can throw around. Im afraid that the +4 will take away all the fun for me. I know some will say I need the +4 to keep the nose down, but I don't mind that at all, I can handle a beast that wants to wheelie all the time. if there is any other information you guys need lemme know. PS: I am not in the US but rather in Namibia, in Africa. Our riding spot is the Namib dessert. We do not have access to builders from the US, only parts, so we use local guys or guys from South Africa to build our builds. The builders in South Africa are know as Sidz Motorcycle Racing. They build some sick banshees. Quote Link to comment Share on other sites More sharing options...
seansy007 Posted March 8, 2021 Report Share Posted March 8, 2021 depends how much power you want a 10mill serval 68mm bore will make around 110-115hp not sure on a 521. personally i dune on a +6 and i can throw it around pretty well but I'm pretty well built and race dirt bikes. with those tires you could probably get away with a +2 just might need to do some tuning changes to the suspension/air pressure. how much do you weigh? 1 Quote Link to comment Share on other sites More sharing options...
RagunCajun Posted July 5, 2021 Report Share Posted July 5, 2021 I haven't rode my 521 serval in sand. However, I recommend using the swing arm you have now and see how you like it. That's free. I went strait to a +6 and absolutely hated it. I went back to a stock length round house carrier swing arm. I didnt like it because all the bike did was spin until 4th or 5th. I assume with sand and paddles, it's totally different. It was for me with my old weak 4 mil and paddles in sand. Quote Link to comment Share on other sites More sharing options...
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