4-1 headers are designed so that all 4 exhaust pipes merge into one

* Heatshield included

but they provide the ultimate airflow for brake cooling setups or intake ducting - outer diameter of exit is 65mm

Alettone BMW E92 Look Performance Carbonio

7i LS (D17A8 - EM2)

Mishimoto Radiatore in alluminio Honda NSX 90-05 Interni 4-1 headers are designed soThe Mishimoto performance aluminum radiator for the Acura NSX is the ideal upgrade to the stock NSX radiator. Designed and specifically engineered to maximize cooling efficiency by up to 30%, boost engine functions and protect your car from overheating. Whether you use your Acura for daily driving or take it to the track, many people overlook the importance of installing an upgraded radiator in their engine. A stock radiator can not handle the heat