Uni Filter 01-1154 Red Foam Pre-Filter - 3.5" x 5" - All Classes

$7.92 USD
$7.92 USD
Uni Filter 01-1154 Red Foam Pre-Filter - 3.5" x 5" - All Classes

Uni Filter 01-1154 Red Foam Pre-Filter - 3.5" x 5" - All Classes

$7.92 USD
$7.92 USD

Integrating new parts into your intake system requires uncompromising filtration to prevent microscopic track dust from scoring cylinder walls. The Uni Filter 3.5" x 5" Red Foam Pre-Filter acts as the ultimate first line of defense for high-RPM powerplants, capturing heavy particulate matter before it ever reaches the primary element. Engineered from dense, open-cell polyurethane foam, this pre-filter wrap maximizes dirt-holding capacity without strangling volumetric efficiency. Whether you are running on a dusty dirt oval or a debris-heavy sprint track, maintaining optimal airflow is critical to preserving peak horsepower and preventing premature wear.

Advanced Filtration for Racing Engines

In the high-stakes environment of competitive karting, racing engines demand pristine air to maintain stoichiometric balance. Even a minor influx of silica or track rubber can compromise piston rings and valve seats. By deploying this dense red foam pre-filter over your main intake element, you effectively double your filtration stages. The 3.5-inch by 5-inch dimensions provide a snug, compressive fit over standard pod filters, ensuring zero bypass. This wrap traps the larger, abrasive particles, allowing your primary filter to focus entirely on microscopic fines. The result is sustained throttle response and a drastic reduction in mid-race power degradation.

Protecting Carburetor Gaskets and Internals

Abrasive dust doesn't just hurt the cylinder; it wreaks havoc on the entire fuel delivery system. Fine grit that bypasses inadequate filters can lodge in the venturi, accelerating wear on delicate carburetor gaskets and throttle shafts. By stopping dirt at the outer boundary, this Uni Filter pre-filter ensures that your carb internals remain spotless. Furthermore, keeping the intake tract clean reduces the risk of blow-by contaminants mixing with your oil, which ultimately protects your engine gaskets and bottom-end bearings from abrasive sludge.

Technical Specifications & Features

  • Open-Cell Polyurethane Foam: Maximizes dirt-trapping efficiency while maintaining high CFM flow rates for zero horsepower loss.
  • 3.5" x 5" Compressive Fit: Designed to stretch and conform tightly over standard cylindrical and tapered pod filters.
  • Vibrant Red Dye: Provides immediate visual feedback on dirt accumulation, taking the guesswork out of maintenance intervals.
  • Washable & Reusable: Easily cleaned with standard foam filter solvents and re-oiled for multiple race weekends.
  • Extended Primary Filter Life: Captures heavy debris first, significantly reducing the service frequency of your expensive main filter.
  • Zero-Bypass Design: The elastic nature of the foam ensures a tight seal against the base, preventing unfiltered air leaks.
  • Multi-Condition Performance: Proven effectiveness in both dry, dusty dirt tracks and rubber-marbled asphalt circuits.

Stop sacrificing engine longevity for airflow. Equip your intake with this professional-grade pre-filter and keep your powerplant running at the absolute limit. (And if you're building a new chassis from the ground up, be sure to check out our latest go kart frame for sale to complete your winning package.)

Frequently Asked Questions

Q: How do I install the Uni Filter 3.5" x 5" pre-filter?

A: Simply slide the foam pre-filter over your existing 3.5-inch diameter pod air filter. The elastic, open-cell foam is designed to stretch and provide a snug, compressive fit that seals against the base of the filter to prevent any bypass.

Q: How often should I clean my foam pre-filter?

A: Maintenance intervals depend on track conditions. On dusty dirt ovals, you should inspect the filter after every heat race. If the red foam appears heavily coated in debris, wash it with a dedicated foam filter cleaner, let it air dry, and re-oil it before your next session.

Q: Does this pre-filter restrict airflow to my engine?

A: No. The pre-filter is engineered from high-porosity, open-cell polyurethane foam. It is designed to capture large particulate matter while maintaining high CFM flow rates, ensuring your engine receives the air it needs for peak horsepower.

Q: Can I use this on any 3.5-inch air filter?

A: Yes, this is a universal pre-filter designed for any cylindrical or tapered pod filter with a 3.5-inch diameter. It is an excellent way to extend the life of your primary filter regardless of the engine class you are running.

Related Products From Vendor

You may also like