SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2

SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2

$319.00 $350.00
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SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2
  • SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2
  • SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2
  • SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2
  • SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2
  • SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2
  • SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2
  • SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2
SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2

SPDZ1 RF V3 B Series Swap Big Tube Style 4-1 Header B16 B18 B20 EG EK DC2

$319.00 $350.00

SPDZ1 RF V3 Big Tube 4-1 B-Series Swap Header – B16 / B18 / B20 – Fits EG, EK, DC2 & Chassis-Swapped Vehicles

Serious flow. Serious gains. Serious quality.

The SPDZ1 RF V3 Big Tube 4-1 Header is engineered for performance-driven Honda enthusiasts running a B-Series engine swap. Designed to outperform stock manifolds and cheaply made alternatives, this header unleashes real horsepower, offers clearance for A/C and power steering, and fits like a glove in your EG, EK, or DC2 chassis.

Whether you’re building a street sleeper or a track weapon, the SPDZ1 RF V3 brings race-inspired flow, premium build quality, and unmatched reliability — all backed by better flanges, stronger hardware, and superior packaging for peace of mind from checkout to install.

Key Features:

  • True 4-1 Big Tube Design: Built for mid-to-high RPM power, offering +10 WHP gains even on stock GSR motors — more with tuning and bolt-ons.
  • Full A/C & Power Steering Clearance: No compromises — run full accessories with zero interference.
  • 18-Gauge 304 Stainless Steel: TIG welded, corrosion-resistant, and built to withstand daily driving or track abuse.
  • Thick CNC Machined Flanges: Heavy-duty flanges machined to spec and thicker than competitors for a warp-resistant seal.
  • True 2.5” Collector: For maximum exhaust flow and seamless integration with aftermarket exhaust systems.
  • Complete Hardware & Gasket Kit: Comes with everything you need for a clean, hassle-free install.
  • Protective Premium Packaging: Shipped in reinforced, custom-fit packaging to prevent shipping damage and ensure your product arrives flawless.
  • Designed to fit half size radiators, will not fit full size radiators

Vehicle Fitment:

  • 1992–2000 Honda Civic (EG / EK w/ B-Series Swap)
  • 1994–2001 Acura Integra (DC2)
  • Pre-1965 Chassis w/ B-Series Swap

Why SPDZ1?

SPDZ1 performance headers are built with track-tested precision and enthusiast-driven engineering. We don’t cut corners — we raise the bar. When quality, fitment, and performance matter, SPDZ1 delivers.

Intentional design

We make things that work better and last longer. Our products solve real problems with clean design.

Quality first

We obsess over the details and strive to deliver the best products at the best prices, every time.

Customer care

We're always on your side: keeping our loyal customers happy is our top priority and number one goal.

Feature 1

Made with care and unconditionally loved by our customers, this signature bestseller exceeds all expectations.

Feature 2

Made with care and unconditionally loved by our customers, this signature bestseller exceeds all expectations.

At the heart of every product lies a unique story, driven by our passion for quality and innovation. Each item enhances your everyday life and sparks joy.