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Custom AMS Spec Evo IV-IX 2.0 Ross Pistons

AMS/Ross EVO IV-IX Pistons are ideal for both street and serious competition. These pistons are loaded with extra features such as annular pin hole grooves with double forced oil holes, extra thick ring lands, 4340 hard-chromed wrist pins that are taper bored, and Ross Racing Rings. These pistons were specially designed by AMS to be the best piston money can buy. These are lighter and stronger than std Ross evo pistons.

Features

�   Specially designed quench area that improves power and reduces the chance of detonation
�   Annular pin hole grooves with double forced oil holes to prevent pinhole galling
�   Taper lands to prevent scuffing
�   Extra thick lands for superior ring groove support under extreme pressure
�   4340 taper bore, hard-chromed extra heavy duty pins for high strength and low weight

Kit Includes

�   Pistons, pins & rings

Specifications

�   Compression Ratio: 8.8:1

Options

�   Standard Bore
�   .020 Over Bore

Applications

�   Mitsubishi Evolution IV-IX
�   Fits all USDM, JDM and European Models

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