Diameter, Universal, Kit - X-type dual exhausts help engines make more power by reducing exhaust reversion and scavenging cylinders better, to counter the uneven exhaust pulses of a V8's firing order. With Summit Racing universal X-pipe kits, you can fabricate a custom "X" system ...Diameter, Universal, Kit - X-type dual exhausts help engines make more power by reducing exhaust reversion and scavenging cylinders better, to counter the uneven exhaust pulses of a V8's firing order. With Summit Racing universal X-pipe kits, you can fabricate a custom "X" system for just about any performance vehicle.
Kits are available in several large tubing diameters and include all of the essential pieces--that means four 45 degree mandrel-bent sections of tubing (which you trim to size), the prefabricated X-section that is the heart of the systems, and the heavy-duty clamps to hold them all together. They're made for off-road use only.