K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in Height Drivetrain>Ring & Pinions SFI Approved: The SFI Specification

SFI Approved: The SFI Specification establishes uniform test procedures and minimum standards for evaluating and determining performance capabilities specifically for replacement flywheels used by individuals engaged in competitive motorsports

Developed from a unique material mined from lava rock

57i Series Intakes are not legal for use in California and other US States adopting California emission standards

The universal gauge panel is designed to mount under the dash

Recommended for competition use

K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in Height Drivetrain>Ring & Pinions SFI Approved: The SFI SpecificationK&N off road replacement air filters are ideal for extended use in dirty and dusty off road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air flow with excellent filtration.