ULTRA LOW RESTRICTION RACING FILTER (ULRES) - Filters down to 27 micron - (20 microns or less recommended for 100,000 mile daily drivers with long terms between oil changes) - Filtration technology experts determined particles below 20 microns are not large enough to produce engine wear, but the restrictive elements that reduce oil pressure, will! - Only drops oil pressure by less than 2.5 psi for maximum flow over NO filter at all! - 500 psi burst capacity housing - White finish for no-frills all out competition performance