R2C CFD 4150 4 Barrel Air Clearner Bases 1" Tall - Open Flow Director
Formerly R2C Performance Filters, the company was purchased by OTR - On Track Racing and rebranded. They still use the same manufacturing process and proprietary synthetic dry media fiber, which is great for offroad racing in desert silt and dust.
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Description
R2C's Holley CFE 4150 4 barrel air cleaner bases have been provide to increase power in the double digits on Dirt Modified race cars that make in excess of 680 hp. This done by the air flow design to provide a precision booster signal and an entry profile that increases torque and provides crisp throttle response.
These bases are from months of design evaluation and flow bench testing, followed by extensive dyno and track tests (now over 400 independent pulls!) conducted by the most respected names in race engine and carburetor assembly, have resulted in the best flowing, highest power producing air cleaner bases for Holley 4 barrel race applications. Every application from Stock Cars to unlimited Late Models and Big Block Modifieds have achieved significant gains in power and response/derivability.