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JW450R1
04-23-2007, 05:20 AM
what is every-ones opinions on the 416,426 kits for the 400ex.how reliable are they.are they worth the money?
sideways
04-23-2007, 05:31 AM
416 as reliable as stock, fast revving, and can produce as much power as a 440 if set up right
zrpilot
04-23-2007, 05:55 AM
Originally posted by sideways
416 as reliable as stock, fast revving, and can produce as much power as a 440 if set up right

Right on brotha!:D
sideways
04-23-2007, 10:13 AM
i did a wiseco 12.5:1 416 kit with the xr400 cam and wb rev box. the bike screams when it hits the rev limiter, which i believe is at 11500rpm. maybe 12500. best investment i made to the bike, other than suspension. and now that i write this i realize my sig is no longer up to date