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:thumbsup:I know many have taken this route.i run a 2007 400sm with full exhaust, 3x3 mod, and fcr 39. is it worth the 1000 dollars to add a 434 big bore, cams, vlaves/valve springs and drz e gasket/ lightened flywheel to a drz? give me you opinions on your builds/ the cost of the build/ and the power gained:ride:

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Depending on what exhaust you have, I would just do cams and Big Bore for your next up grade. The exhaust you have know might not preform well with the BB. You could do just cams and you may notice a slight difference on the freeway. I don't have the BB yet, but am waiting for some more miles on the origanal piston.

I would maybe do the Light flywheel either now or later, but try and enjoy on mod at a time.

Edited by toadl

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Adding BB and appropriate cams will wake up your bike considerably...giving you much improved rideability from increased torque and several HP.....

Definitely worth the exercise....:lol:

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