Nissan GTR Valvetronic rear section 2017 (fits OEM valve)Supercar quick, hypercar capable, the GTR will dominate many of the revered supercar pedigree's. The 3. 8l twin turbo V6, a marvel of modern engineering, has enormous potential beyond the factory 475hp. Of course we at Kline were eager to build the ultimate GTR exhaust. The criteria, flexibility on design and cross sections to tune perfectly with your desired power, whether your building a 1400hp monster, or 650hp daily driver, Kline can offer the