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hi can anyone tell me what gains I can expect from fitting a 904 big bore kit to my 05 america (790). can I realy expect the gains of 40 or 50% bhp and torque. thanks
you can indeed make those kind of increases with a 904, it isn't free though. But IMHO it is well worth it. And fun, it will completely change the bike (in a good way).
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
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