Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
The SPDZ1 RH Race 4-2-1 Ramhorn Header is the ultimate long-tube solution for serious K-Swap builds. Whether you’re pushing a high-revving K20 or a torque-heavy K24, this header is engineered to deliver unmatched throttle response, increased horsepower, and cleaner exhaust flow across the powerband — all while maintaining proper fitment in your EG, EK, or DC2/DA chassis.
Designed for serious performance and fabricated with race-grade materials, the SPDZ1 Ramhorn Header outclasses the competition with thicker flanges, improved welds, premium gaskets, and enhanced packaging protection — because quality matters from unboxing to redline.
Key Features:
True 4-2-1 Tri-Y Ramhorn Design: Engineered for superior exhaust scavenging, torque delivery, and high-RPM power.
Race-Proven Gains: Expect significant horsepower and torque increases, improved throttle response, and reduced backpressure.
Precision TIG Welded 304 Stainless Steel: Built from 18-gauge mandrel-bent tubing with CNC-machined 0.38” flanges for a warp-resistant, leak-free seal.
2-Piece Slip-Fit Design: Makes install and maintenance fast and frustration-free — ideal for street or track swaps.
True 2.5” Collector: Supports maximum flow for naturally aspirated or lightly boosted setups.
Complete Hardware & Gasket Kit: Includes header gasket, donut gasket, flange, spring bolts, washers, and nuts for a perfect seal.
Vehicle Compatibility:
1992–1995 Honda Civic (EG K-Swap)
1996–2000 Honda Civic (EK K-Swap)
1990–2001 Acura Integra (DA/DC2 K-Swap)
Compatible with both K20 and K24 engine swaps
Installations Policy This product may require some modification to ensure a proper fitment. Once the item has been installed or modified in any way, it is not eligible for return or refund. We recommend having this 2-piece item put together by a professional installer.
Why SPDZ1?
At SPDZ1, we don’t believe in compromise. Our headers are developed with hands-on input from racers and fabricators to ensure maximum performance, exceptional fitment, and long-term durability. Each unit is built with pride and shipped in reinforced packaging for a flawless customer experience from start to finish.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
