BK&N RE-0870 High Performance Universal Clamp-on Air Filter 4" Flange 9" Height ReviewbP PP K&N RE-0870 High Performance Universal Clamp-on Air Filter 4" Flange 9" Height PDesigned to increase horsepower and accelerationPHundreds of sizes and shapes for most applicationsPHigh air flow with excellent filtrationPClamp-on washable and reusable air filterPPliable flanges absorb vibration and can be stretched up to 116 In.