R2C Racing Air Cleaner Base for 4412 Holley

*** New for 2012!

R2C's new 4412 HEI base eliminates trimming requirements.

Maximum power for Holley 4412 racers!

Precision Fit on all 4412 HEI combinations.

AC10513 Carbon Fiber HEI Base
AC10516 Composite HEI Base

Extensive dyno testing indicates maximum horsepower when using base with R10522/R10523 competition air filters.

MODIFIED, SUPER STOCK AND
STREET STOCK 2V RACERS!
After 100’s of hours of R&D and testing with top
engine and carburetor builders, R2C has delivered
the best performing air filter base for the Holley
4412, 2 barrel racing carburetors.

Precision air horn/choke tower fit - No more trimming and grinding!
2 durable and lightweight finish options: Carbon Fiber & Composite.
Maximum performance when used in conjunction with R2C’s #1 rated offset Modified filters.
Improved air flow characteristics
More mid-range horsepower and torque!

Dyno Test Results

AC10505	Carbon Fiber Base Only
AC10508	Composite Base Only
AC10505CF	Complete System-Carbon Fiber Base w/Aluminum Top
AC10508FG	Complete System-Composite Base w/Aluminum Top
AC10505CF-S	Complete System-Carbon Fiber Base w/Steel Top
AC10508FG-S	Complete System-Composite Base w/Steel Top
Composite base approved for IMCA competition.

dakota engine builders

Composite Base Carbon Fiber Base 1

IMCA Approved Composite Base Carbon Fiber Base

7550 Industrial Drive, Forest Park, IL 60130
P: 708.488.8211
F: 708.366.3563

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