REMARKS :
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- chilled cast iron camshafts
- supplied with adjustable chain sprocket on the exhaust cam to optimize intake cam timing
(also available with 2 non adjustable chain sprockets at reference cam timing: partnumber 10156xx hydraulic or 10157xx mechanical)
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ONLY for dirt track applications and pro street use with adjustable engine management or carburettors
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order 1013665 / 1003665 for use with VVT tensioner and original pistons