aFe 56-70014D Takeda Momentum Pro DRY S Cold Air Intake for 2018–2021 Subaru WRX STI

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

• Fits 2018–2021 Subaru WRX STI (EJ257 H4-2.5L Turbo)

• Dyno-proven gains up to 10 HP and 11 lb-ft torque

• Outflows the factory intake by 49%

• Measured flow: 305 CFM @ 7” H₂O

• Sealed XLPE housing keeps intake temperatures low

• Includes Dynamic Air Scoop + fender well inlet for increased cold-air supply

• Large 7.5” radial flow Pro DRY S filter (oil-free)

• Three-layer synthetic media for convenience and long service intervals

• Clear sight window for easy filter inspection

• One-piece housing minimizes complexity and install time

• Dyno-tuned XLPE intake tube for optimal flow and durability

• Includes stainless steel clamps and silicone couplers

• Fast installation — roughly 30 minutes

• Ideal for street-driven and daily-use vehicles

• Not CARB exempt

Technical Specs / Material Info

• Filter Type: Pro DRY S (oil-free, reusable, 3-layer synthetic)

• Filter Height: 7.5 inches

• Housing: Heat-resistant XLPE polymer

• Intake Tube: Dyno-tuned XLPE

• Flow Increase: 49% over stock

• Emissions: Not CARB legal

• Install Time: ~30 minutes

Package Contents

• Takeda Momentum Intake Housing

• Dyno-Tuned XLPE Intake Tube

• Pro DRY S Oil-Free Air Filter

• Dynamic Front Air Scoop

• Silicone Couplers and Stainless-Steel Clamps

• Hardware

• aFe Warranty

Installation Info

• Direct bolt-on installation

• No cutting or modifications

• Minimal hardware for fast assembly

• Designed for proper OEM fitment

Special Notes / Emissions Info

• Not CARB exempt

• Not legal for sale or use in California

• Fits 2018–2021 Subaru WRX STI only (EJ257 engine)