Take your K20 or K24 swapped Toyota MR2 Spyder to the next level with the Spyder K-Swap Over-Subframe 4-2-1 Header — engineered specifically for the unique layout of the Spyder chassis and the demands of high-performance builds.
Key Features & Benefits:
-
Precision Stainless Construction: Built from heavy-duty 16-gauge stainless steel tubing, the runner sizes start at 1.75″ and step up to 2″ to optimize exhaust scavenging and flow.
-
TIG Welded Excellence: All welds are TIG done for consistent, strong joins that endure heat, vibration and track use.
-
4-2-1 Header Design: The 4-2-1 configuration is tuned for improved midrange and top-end power — ideal for K-series NA builds or boosted setups.
-
Slip-fit Merge Collectors: Allows smoother transitions from runners to collectors, reducing turbulence and promoting better exhaust flow.
-
O2 Sensor Bung Included: Comes ready with an O2 sensor bung for tuning, wideband sensors or factory sensor integration.
-
V-Band Outlet: Features a 2.5″ V-band outlet with mating flange and clamp — enabling you to create a custom downpipe or exhaust setup without welding flanges.
-
Spyder-Specific Fitment: Designed to clear the under-subframe space of the MR2 Spyder chassis when performing a K-series swap, offering proper routing for optimal fitment.
-
Ideal for K20 / K24 Builds: Whether you’re running a naturally aspirated or boosted K-series engine, this header supports high flow, strong pulse tuning and reliable fabrication.
-
Installation Notes: While the header is designed for the over-subframe layout, verify clearance with your swap package and exhaust routing. Some fabrication may be needed depending on accessories (heat shields, A/C lines, brake lines).
Why Choose This Header?
In K-series swaps for the MR2 Spyder, proper header fitment is critical to avoid clearance issues and maximize performance. Enthusiasts on forums note that many generic headers require heavy modification to clear the cross-member or subframe. This 4-2-1 header is tailored for the Spyder’s swap layout and gives you both flow and fitment advantages.
Perfect For:
-
MR2 Spyder K20/K24 swap builds
-
Enthusiasts seeking a high-flow, well-fitting header with custom exhaust flexibility
-
Track cars, weekend warriors, or street builds where performance and reliability matter