Pistons (67mm Dia, 17mm Pins) For Smart 700cc petrol 450 or 452 (Roadster) The pistons are machined from billet material (machined from solid bar) and made from 2% copper alloy 2618 aluminium. (So as strong as steel). They are made to have the same compression as the standard pistons, have thicker skirts, are a better quality material and have 17mm pins and are a 67mm (+0.5mm) Diameter. Avalibility: 5+ Sets in stock Machined from solid in 2618 aluminium Contact Company: Email: mike@223.com Phone: 44(0)7970108386 |