Description
The aFe Takeda Momentum 56-70014D Cold Air Intake System with Pro DRY S filter is engineered to boost airflow, enhance throttle response, and deliver noticeable performance gains for the 2018–2021 Subaru WRX STI. Featuring a sealed XLPE polymer housing, a massive 7.5-inch oil-free air filter, and a dyno-tuned intake tube, this intake system is built for efficiency, simplicity, and everyday drivability.
With dyno-proven gains of up to 10 horsepower and 11 lb-ft of torque, plus 49% more airflow than the factory intake, the Momentum intake provides improved breathing for the EJ257 engine. The sealed one-piece housing incorporates a clear sight window for easy filter inspection and works with the included Dynamic Air Scoop and fender well inlet to draw in cool outside air.
The Pro DRY S filter offers maximum convenience with three layers of synthetic, oil-free media that deliver excellent filtration and long service intervals while requiring no oiling. Ideal for street and light off-road use, the large radial flow filter provides a high-flow design within a simple, easy-to-maintain package.
Designed for fast installation with minimal hardware, the Momentum system includes stainless steel clamps and silicone couplers. It installs in approximately 30 minutes and offers OEM-like fitment with high-quality construction throughout.
Key Features and Benefits
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Fits 2018–2021 Subaru WRX STI (EJ257 H4-2.5L Turbo)
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Dyno-proven gains up to 10 HP and 11 lb-ft torque
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Outflows the factory intake by 49%
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Measured flow: 305 CFM @ 7” H₂O
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Sealed XLPE housing keeps intake temperatures low
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Includes Dynamic Air Scoop + fender well inlet for increased cold-air supply
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Large 7.5” radial flow Pro DRY S filter (oil-free)
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Three-layer synthetic media for convenience and long service intervals
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Clear sight window for easy filter inspection
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One-piece housing minimizes complexity and install time
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Dyno-tuned XLPE intake tube for optimal flow and durability
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Includes stainless steel clamps and silicone couplers
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Fast installation — roughly 30 minutes
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Ideal for street-driven and daily-use vehicles
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Not CARB exempt
Technical Specs / Material Info
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Filter Type: Pro DRY S (oil-free, reusable, 3-layer synthetic)
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Filter Height: 7.5 inches
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Housing: Heat-resistant XLPE polymer
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Intake Tube: Dyno-tuned XLPE
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Flow Increase: 49% over stock
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Emissions: Not CARB legal
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Install Time: ~30 minutes
Package Contents
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Takeda Momentum Intake Housing
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Dyno-Tuned XLPE Intake Tube
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Pro DRY S Oil-Free Air Filter
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Dynamic Front Air Scoop
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Silicone Couplers and Stainless-Steel Clamps
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Hardware
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aFe Warranty
Installation Info
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Direct bolt-on installation
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No cutting or modifications
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Minimal hardware for fast assembly
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Designed for proper OEM fitment
Special Notes / Emissions Info
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Not CARB exempt
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Not legal for sale or use in California
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Fits 2018–2021 Subaru WRX STI only (EJ257 engine)
