Brand New MAR Motorsport Piston set PI20659 for classic Mini / A Series Engine 9cc bowl
A Series 1380cc / 73.50mm finished bore size
Supplied with NPR Steel “Tuning” Rings 1.2mm / 1.2mm / 4.0mm as used by other well known forged piston manufacturers.
Piston Weight = 288g
Pin Weight = 96g
Ring set Weight = 18g
Total Weight = 402g per piston
Manufactured exclusively for MAR Motorsport Ltd by a world class piston manufacturer to our own specification. These are not low quality Far East parts, but what is possibly the best value 1380cc piston available for a fast road engine without the expense of forged parts.
Acknowledged by many A Series specialists as superior quality to the original “Powermax” design, and an upgraded ring pack from NPR to give better conformability whilst at the same time increasing power due to less drag / friction.