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This 7-1/2” tall 360-degree radial flow air filter features a 4” round flange and our oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum airflow and performance
ready-to-go Honda OEM blocks OEM bore
The transition from flange to pipe or high flow cat is made from precision casted 304 stainless steel
While it's not the only tuning system that operates this way the JB4 separates itself from the competition with much more advanced connection points and processing including CANbus
Reduces oil and carbon buildup in intake system and on intake valves
FERREA VALVE SPRING KIT K20C1/ K20C4 HONDA CIVIC TYPE R/ Type S Honda Pilot 4th Gen (2023+) This 7-1/2” tall 360-degree radialFITS: 10th Gen Honda Civic Type R 11th Gen Honda Civic Type R 10th Honda Accord 3rd Gen Acura RDX 5th Gen Acura Integra Type S 2nd Gen Acura TLX The OEM Honda valvetrain can handle bursts to 7000 rpm, but there have been failures with extended periods of continuous RPM at that level. The Ferrea valve spring kit uses a high quality PAC spring. made in the USA. It increases the seat pressure more than 20 psi on the seat to help control valve bounce and
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