Manifolds 4-2-1 for Suzuki Samurai 1.3cc and Sj413, entirely made in Italy in 1.4301 stainless steel, 1.5 mm thick and not simply chromed, with plates machined from solid 12mm thick steel.
Replacing the exhaust manifold on a naturally aspirated engine is the change that makes more torque at low revs between all feasible modifications especially when coupled to a dedicated camshaft.
The tube section is carefully calculated and the connecting plate to the head has rectangular and non-round lights so as not to create turbulence and pressure drops at the beginning of the exhaust system, on the Samurai suzuki engine the real gain is between the 5 and the 10hp in maximum power and a conspicuous increase of torque at low and medium rpm, the 4-2-1 in this case is the best geometry.
The manifold is designed for the installation of lambda sensors.
The kit replaces the exhaust system to the terminal, includes everything needed for assembly and allows you to immediately get a significant increase in performance and a drop in consumption.
