hot street - dirt track

Audi ADR atmo engines

I-4cyl 1.8L 20v DOHC (DTH/DTH)

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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