Full Race Camshaft 2001- 2008; 650, 550, 501 models. This is the well famous LX1 cam from Dale Lineaweaver of the USA. It should NOT be used with the 400 unless an open tailpipe is used (I should know, I found out the hard way!)
The cam cannot do this on its own but this is the one!
It comes with advice and instructions on maintenance and care. Note, valve clearances need to be larger with this cam
Much stronger than the standard 2004-2008 '08' Cam