HKS Metal Head Gasket 5 Layer Special (1.2mm) - Evo X 4B11 Cams & Pulleys Skunk2 Ultra Series Manifolds are

Skunk2 Ultra Series Manifolds are the result of decades of research and development

OEM mount hardware can still be used with the purchase of one additional factory bolt (PN: 666-05-0400)

these intakes will improve throttle response

we took the Lower Control Arm back to the drawing board

Alpha Series Rods are forged from select 4340 chromoly steel and feature a straight H-beam design

HKS Metal Head Gasket 5 Layer Special (1.2mm) - Evo X 4B11 Cams & Pulleys Skunk2 Ultra Series Manifolds areHKS specializes in aftermarket high performance parts and is perhaps the most well known aftermarket brand in the world. Formed in 1973, and named after the founders Hasegawa, Kitagawa, and Sigma, HKS began tuning engines and cars. Their vision was to tune and manufacture engine components that surpasses OE Manufacturers. They now produce some of the highest quality aftermarket parts on the market, with some of the most innovative design available.