DR 180cc Super/Sprint For 2 Port Vespa Cylinder Kit
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Vespa - Conversion Cylinder Kit - DR - 180cc - 63mm Bore
To Fit: Super, Sprint, GL, GT, GTR, VBA, VBB, T4, VNB, Old Vespa - 2 Port Crankcases
Minachrome cast iron Cylinder ( With Added Chrome ) - 7 transfer ports - Main exhaust port and two added booster exhaust ports.
The cylinder head is especially designed to maximise combustion and ease cooling.
The cylinder has been quite cleverly designed to feed the extra mixture via boost ports in the cylinder wall and holes in the side of the piston making no alterations necessary to the engine casing.
The base of the cylinder has been modified and a special gasket is supplied to suite 2 port type crankcases as fitted to the older Vespa's.
Ignition timing is the standard setting for new models on unleaded fuel which is 18 degrees btdc.
DR180 2 PORT