Description
The Tomioka Racing TR Evo X Stainless Steel Exhaust Manifold is built for real-world durability and performance. Constructed from full 304 stainless steel and machine welded for consistent quality, it features a one-piece design with no joint pipes to reduce potential leak points. Precision lost-wax finished flanges help improve sealing and fitment consistency. Designed for optimized exhaust gas flow, this manifold helps exhaust energy exit faster—supporting improved turbo response on the 4B11T.
This TR exhaust manifold is a direct 100% bolt-on replacement for the stock manifold and fits perfectly with a stock turbo or stock-location upgraded turbocharger.
Check out the available video and dyno graph on this turbo.
Characteristics
| Full 304 Stainless Steel Construction |
| 100% Bolt-On Replacement |
| Compatible with Stock-Location Turbo |
| Lost-Wax Finished Flanges (Fitment & Sealing) |
| One-Piece Design (No Joint Pipes) |
| Machine Welded for Consistent Quality |
Kit Contents
- Exhaust Manifold
- Gasket
- Heat Wrap with Stainless Steel Locking Ties
FAQ – TR-EM1004 Evo X 4B11T Stainless Exhaust Manifold
What vehicles does this fit?
Designed for Mitsubishi Lancer Evolution X (Evo X / Evo 10) with the 4B11T engine (commonly listed as 2008–2015). Always verify your exact model year, trim, and turbo setup before purchase.
Is this compatible with the stock turbo?
Yes. This manifold is designed as a direct bolt-on replacement for the factory manifold and is compatible with the stock turbo.
Will it fit stock-location upgraded turbos?
It is intended for stock-location turbo and stock-location “stock-based” upgraded turbochargers. If your setup changes turbo location, flange type, or requires custom lines/hardware, confirm fitment before ordering.
Does this fit Evo X MR (SST) and GSR (5MT)?
Fitment is based on the 4B11T engine and stock-location turbo configuration. However, clearance can vary depending on aftermarket components (downpipe/O2 housing, fans, heat shields, lines). If you have an MR/SST or a heavily modified bay, confirm your supporting parts before purchase.
RHD vs LHD – does it fit right-hand-drive cars?
Most Evo X exhaust manifold fitment is consistent between RHD and LHD, but surrounding components (heat shields, lines, wiring routing) can differ. If your car is RHD, we recommend verifying clearance with your specific turbo/downpipe/O2 housing setup.
What is it made from?
Full 304 (SUS304) stainless steel tubular construction.
Why 304 stainless instead of mild steel?
304 stainless offers strong corrosion resistance for long-term street use and repeated heat cycles. It’s a great choice for customers who want durability without relying solely on coatings to fight rust.
What does “no joint pipes” mean?
It refers to a one-piece layout without additional slip joints/connection sections in the runners, which can reduce potential leak points and simplify installation.
Does it require tuning?
Not always on an otherwise stock car, but any change that affects exhaust flow and turbo response can influence boost control and fueling—especially on modified setups. Best practice: monitor AFR/boost and tune as needed for safety and performance.
Will I gain horsepower?
Results depend heavily on turbo, tune, boost targets, and supporting mods (downpipe, intake, intercooler, fuel). This part is designed to improve exhaust flow and support performance potential; exact gains are setup-dependent.
Will this increase under-hood temperatures?
Yes—tubular manifolds can raise engine-bay temperatures. The kit includes heat wrap; additional heat management (turbo blanket/heat shields) is recommended for hard-driven cars.
Should I use the included heat wrap?
The included wrap helps reduce radiant heat in the engine bay. Make sure it’s installed securely and kept away from sensitive wiring/lines. As with any wrap, proper installation matters.
Does it come with a gasket and hardware?
The kit includes a gasket and heat wrap with stainless steel locking ties. Hardware (studs/nuts) may vary by setup—if your current hardware is old or heat-cycled, replacing studs/nuts is recommended.
Will it work with my aftermarket downpipe / O2 housing?
In most stock-location turbo configurations, aftermarket downpipes and O2 housings are compatible, but we cannot guarantee fitment across every brand/design. If your O2 housing/downpipe changes angle or turbine outlet positioning, verify clearance before installation.
Does it keep the factory heat shields?
Tubular manifolds often change the external shape compared to the factory cast manifold. Factory shields may not fit without modification. Plan for heat wrap/blanket/shields as needed.
Will it pass emissions / smog?
Emissions compliance varies by location and inspection type. This is an aftermarket manifold; if your area requires CARB EO or visual inspection compliance, confirm local requirements before purchase.
Will it crack?
Any high-heat turbo manifold can fail if exposed to extreme heat cycling, improper support, boost creep/EGT issues, or poor installation practices. Proper installation, good hardware, correct torque, and heat management help maximize long-term reliability.
Any installation tips?
- Use new gaskets and quality hardware.
- Torque fasteners to spec and re-check after a few heat cycles.
- Confirm clearance to fans, hoses, wiring, and lines before final tightening.
- Inspect for exhaust leaks after install.
What’s included?
- Exhaust Manifold
- Gasket
- Heat Wrap with Stainless Steel Locking Ties
