The shape of the front part of the NERA piston head has been studied to generate a slight air cone which guarantees better and greater compression of the air volume inside the cylinder. The stroke on the cylinder head PAD is reduced compared to the piston heads available on the market from other manufacturers, to distribute the impact given by the piston stroke better and more gradually. The total height of the TopMax piston head is standardized to the dimensions of the other piston heads on the market. The ERGAL and DELRIN insert for fixing the piston head on the piston is slightly shorter than the standard market size, in order to use the TopMax piston head on any piston on the market.

The STRESS-TESTS carried out on the BLACK piston head were carried out with higher springs than those required by law, so the product will guarantee you reliability and performance even with more stringent configurations. To obtain maximum performance, we recommend the combination with the TopMax piston and cylinder head.