PC Racing Harley spin-on oil filter, Black Anodized — Reusable 35µ stainless micronic filtration

The PC Racing FLO PCS4B is a reusable, black-anodized spin-on oil filter that replaces disposable paper elements with a race-grade stainless steel micronic screen for improved filtration and long-term reuse.

Built from laser-cut 304 stainless micronic cloth and a sturdy anodized housing, this spin-on oil filter is engineered to offer far greater surface area and durability than common paper or brass cartridges. It withstands high temperatures, resists water-related clogging, and is serviceable — clean and reinstall rather than discard — reducing waste while maintaining reliable engine oil flow across a broad range of conditions.

How does this filter improve oil filtration compared to standard paper filters?

The FLO PCS4B uses a fine stainless micronic mesh that captures particles down to roughly 35 microns, which is several times finer than many typical paper or brass filters. Because the filter media is welded rather than glued, it tolerates elevated temperatures and prolonged use without seam failure.

• Laser-cut 304 stainless micronic cloth for durable, precise filtration
• Captures contaminants around 35 microns for cleaner oil
• Welded pleat seams resist heat up to high temperatures without degrading
• Large filter area provides lower restriction and stable flow

Will this maintain oil flow in extreme conditions and cold starts?

Yes — the stainless mesh does not swell or absorb fluids the way paper does, so flow stays consistent during hot runs, water contamination events, and cold startups. That consistency helps reduce the chances of the bypass valve opening and introducing unfiltered oil into the engine.

• Stable flow under high heat and cold starts
• Unaffected by water exposure, unlike paper elements
• Designed to preserve oil circulation without premature bypassing
• Used technology from auto racing and aerospace for reliable performance

How do I service and reinstall the FLO PCS4B?

Maintenance is straightforward: note the filter orientation, clean with a degreaser or dish soap, then blow air from the inside out to clear trapped particles. Before reinstalling, lightly oil rubber seals and ensure the filter sits in the correct original position for a reliable seal.

• Clean each oil change with solvent, kerosene, or dish soap
• Blow air through inside-out to remove residue and cleaning agents
• Lubricate rubber components with clean oil before installation
• Retains serviceability indefinitely when properly cared for

What bike models does this filter fit?

The PCS4B is compatible with an extensive list of Harley-Davidson and other motorcycles spanning Twin Cam, Evo, and several modern models, plus select BMW, Aprilia, Moto Guzzi, Buell and others. Check fitment for your specific year and model to confirm compatibility before ordering.

• Harley-Davidson Touring, Softail, Dyna, Sportster model ranges listed across relevant years
• Buell M2/S3/X1 models from the late '90s and early 2000s
• Aprilias like Dorsoduro, Mana, Shiver across late 2000s–2012
• Multiple BMW F, K, R, and S series models and several Moto Guzzi engines

Who is this for: Riders and technicians who want a durable, serviceable spin-on oil filter that reduces waste and keeps oil cleaner under demanding conditions. It's aimed at motorcycle owners who prefer long-term value, race-proven filtration technology, and a black-anodized housing that complements custom and OEM styling.