GP Sports EXAS EX-Manifold

To suit Nissan Silvia S13 / 180SX (SR20DET)

Maximize turbo performance and response with the GP Sports EXAS EX-Manifold, engineered specifically for SR20DET-powered Silvia platforms. Designed for versatility and durability, this manifold supports a wide range of turbo setups—from genuine factory turbos to bolt-on replacement units.

Constructed from high-quality SUS304 stainless steel, the manifold features equal-length runners to optimize exhaust flow. This design improves turbo response and boost efficiency, helping your engine deliver smoother power and stronger performance across the rev range.

Each section of the manifold is reinforced to ensure long-term durability under high heat and stress, making it a reliable choice for both street and performance applications.

Product Features

• Compatible with OEM and bolt-on replacement turbos
• Equal-length runner design for improved response and boost
• Reinforced construction for enhanced durability
• Optimized exhaust flow for better overall performance

Product Details

• Material: SUS304 Stainless Steel
• Pipe Diameter: 42.7φ
• Wall Thickness: 2mm
• Accessories: Stud bolts included

Vehicle Compatibility

• Model: Nissan Silvia
• Chassis Codes: E-RPS13 / E-PS13
• Engine: SR20DET

EAI valve relocation bracket

When installing an aftermarket exhaust manifold on a PS13 Silvia or RPS13 180SX , the EAI valve, which is located on the top of the stock exhaust manifold, needs to be moved to another location. Some people remove the EAI valve altogether, but a vehicle without an EAI valve will not pass inspection. This product allows you to relocate the EAI valve neatly and easily.

*Adjusting the angle of the EAI pipe and extending the hose will be necessary when moving the EAI valve.

*If the outlet pipe does not have an EAI air intake, please create a new intake through modification and connect the piping securely from there.

Turbine Angle Conversion Adapter

This angle conversion adapter is used  when installing an aftermarket exhaust manifold on a PS13 Silvia or RPS13 180SX , in cases where the intake pipe and exhaust manifold interfere with each other.