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tyman2395
12-16-2008, 08:51 PM
i was wondering if the xr400 piston works in the 400ex? i;m boring it out to a 416 but was wondering if the xr400 one will fit
tyman2395
12-16-2008, 08:52 PM
same with the hot cams
leasureryan
12-16-2008, 09:52 PM
Weisco box says 400ex/xr400 piston. ...same