The factory rubber hoses are replaced to Aluminum Pipes to be more durable at high boost pressure. The pipe diameter is enlarged to 65mm. The pipes w/ enlarged diameter are effective for higher engine output. Purple and HKS logo printed hoses are included. The Aluminum pipes’ buffing surfaces improve the engine compartment appearance. In order to install this kit, HKS Super SQV4 Kit (P/N 71008-AN027) is required. This Piping Kit is included in the GT570 & GT600 Packages. CodeName 13002-AN003I/C PIPING KIT R35GT-R WeightNumber of BOXLengthWidthHeight 5.001445335290 MakeModelYearEngine NISSANGT-R2008 -VR38DETT Remarks HKS Super SQV4 Kit (P/N 71008-AN027) is required for installation. Type: IC, In pipe (Number of pipes): 2, Out pipe (Number of pipes): 4, Buff finish