Stage II is Stage I, Dyno adjustment in combination with a camshaft and pushrods. A Twin Cam recovers nicely from other camshafts and the weak cage bearings in the crankcase are also replaced.  

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Depending on your driving style, you can choose a camshaft with a lot of power at the bottom, or a camshaft with more top power and less power at the bottom (torque).  

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You can choose chain or sprocket drive. Gears are recommended for older models with mechanical tensioners, but not for models after 2007 with hydraulic tensioners.  

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You get a stick, a Dyno adjustment, an S&S easy start camshaft with Timken stronger bearing and a set of adjustable pushrods, with black or chrome sleeves.

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Injection models: The costs are from 2750 euros including the Diag4bike stick.

(including assembly and adjustment and dyno proof)

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Carburettor models: The costs are from 2400 euros.

(Includes mounting and adjustment and dyno proof.) This is without the possibility to adjust the ignition. This costs around 400 euros more.  

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Pay attention ! All Twin Cams from 1999-2004 have 551 or . when installed  a higher number requires different valve springs in the heads. This costs 600 euros extra incl. mounting and gaskets.

For more explanation click here  

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For Twin Cam models it is advisable to take the easy start camshafts. Read here for the explanation.  ​

Various additional changes are possible, a better oil pump or cam support plate, other Tappets, etc. can always be discussed.

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Of course it is also possible with a Thundermax computer instead of Diag4bike, for 800 euros more.