Mishimoto Turbo Inlet Pipe for FL5 Type R/DE5 Type S

Mishimoto Turbo Inlet Pipe - FL5 Civic Type R & DE5 Integra Type S

The turbo inlet is the last thing air passes through before it hits the turbo, and on the FL5 and DE5 the factory inlet is a rubber piece with abrupt bends that restrict and disturb the airflow right where you want it clean. This Mishimoto inlet replaces it with precision-cast aluminum that flows 17.2% better on the bench, with smooth elbow geometry that feeds the turbo without the turbulence the stock part creates. It's a direct fit, in black or red, and it's one of the genuine restrictions worth clearing on these cars.

Why The Turbo Inlet Matters

Worth understanding, because it's a specific, known choke point on the K20C1.

The turbo can only compress the air that reaches it, and how cleanly that air arrives affects how the turbo responds. The factory inlet is molded rubber with sharp, abrupt bends, shaped to fit the packaging rather than to flow well, and those bends create turbulence and a pressure drop right at the turbo's mouth. That restriction blunts how consistently the turbo gets its air through the rev range.

Clearing it lets air reach the turbo more smoothly, which shows up as more consistent charge delivery and turbo response. On a platform where people chase airflow improvements, the inlet is one of the real restrictions rather than a token one.

Cast Aluminum, 17.2% Less Restriction

The construction is what makes the difference.

Mishimoto replaced the rubber inlet with a precision-cast aluminum piece, and the elbow geometry is the point, instead of the stock part's abrupt bends, the cast elbow guides air into the turbo in a smooth transition with minimal turbulence and pressure drop. That's what produces the measured 17.2% reduction in restriction over the factory unit, validated on the flow bench rather than just claimed.

Casting it in aluminum also means it holds its shape under heat and boost where rubber can flex or degrade, so the improved geometry stays consistent rather than softening over time.

Black Or Red

Two powder-coat finishes, black (MMAI-CTR-23UBK) or red (MMAI-CTR-23URD), so the piece either blends into the engine bay or contrasts against the Type R and Type S's factory accents. Both are the same cast aluminum part with the same performance, so it's purely how you want it to look under the hood. Since it's visible, it's a cleaner, more purposeful look than the factory rubber either way.

Direct Fit, No Modification

Straightforward to install.

It mounts at the factory inlet location with no cutting, drilling, or modification, and comes with the coupler, clamps, and hardware to fit it. Pull the stock rubber inlet, fit the cast aluminum one, done. It's a genuine bolt-on that doesn't require a tune to run.

Fitment

2023-2026 Honda Civic Type R (FL5)
2024-2026 Acura Integra Type S (DE5)

K20C1 engine. Direct fit. Black (MMAI-CTR-23UBK) or red (MMAI-CTR-23URD).

Who Should Grab This

This is for the FL5 or DE5 owner clearing the airflow restrictions on their K20C1, who wants smoother, more consistent turbo response from a part that addresses a real choke point. Cast aluminum, 17.2% less restrictive on the bench, a smooth elbow that feeds the turbo cleanly, and a direct fit in black or red. Pair it with your intake for a cleaner path to the turbo, and let it breathe.

Fits: 2023-2026 Civic Type R (FL5) and 2024-2026 Integra Type S (DE5), K20C1. Part numbers: MMAI-CTR-23UBK (black), MMAI-CTR-23URD (red). Construction: precision-cast aluminum. Flow: 17.2% less restrictive than stock (flow-bench validated). Finishes: powder-coat black or red. Install: direct fit, no cutting or drilling, no tune required. Includes: inlet pipe, coupler, worm gear clamps, and mounting hardware. Warranty: Mishimoto lifetime.