SKU: BXIM-00322
BLOX Racing Shorty Performance 5in Air Filter w/3in Velocity Stack and Coupler Kit for 2006-2011 Honda Civic Si, 2002-2006 Acura RSX Type-S
The BLOX Racing Shorty Performance 5in Air Filter w/3in Velocity Stack and Coupler Kit (BXIM-00322) delivers high airflow for performance builds on 2006-2011 Honda Civic Si, 2002-2006 Acura RSX Type-S and similar imports with 3in intake piping. Its compact shorty conical design installs in restricted engine compartments while the included velocity stack pulls in cooler denser air for quicker throttle response and power gains. Enthusiasts choose this kit for easy cleaning and consistent filtration in demanding track or street use.
Key Features
- 5in High-Flow Dry Filter Media: Synthetic material flows 99% more air than stock filters while capturing 99.2% of contaminants down to 5 microns for engine protection
- Shorty Conical Shape: 4in height fits low-clearance hood lines on Civic Si and RSX without rubbing or restricting access
- 3in Polished Aluminum Velocity Stack: Smooth ramp accelerates incoming air to improve volumetric efficiency and cylinder filling
- 3in Silicone Coupler Kit: Heat-resistant 4-ply reinforced silicone with stainless clamps ensures airtight seal under boost
- Universal 5in Inlet: Bolts directly to 3in piping on BLOX intakes or custom setups for plug-and-play performance
Product Notes
- Filter is pre-oiled and ready to install, clean every 15,000 miles or sooner in dusty conditions
- Use BLOX Racing filter cleaning kit for maintenance to restore airflow
- Box dimensions 9in x 9in x 8in for compact storage and shipping
Installation Notes
- Professional installation recommended.
- Remove stock airbox, attach coupler to throttle body or intake tube then secure filter and stack with provided clamps
- Compatible with 3in aluminum or silicone intake pipes on K20/K24 engines
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2011 | Honda | Civic | Si |
| 2002-2006 | Acura | RSX | Type-S |
| 1994-2001 | Acura | Integra | GSR, Type R |
| 1992-2000 | Honda | Civic | Si, EX |
| 1999-2004 | Honda | Civic Si | EM2, EP3 |
Why Choose BLOX Racing?
- Established JDM brand with motorsport-proven parts for Honda and Acura
- CNC-machined components and dyno-validated airflow designs
- Direct bolt-on engineering reduces setup time and boosts horsepower
Frequently Asked Questions
- Q: Does this fit 2008 Honda Civic Si with stock intake?
A: Yes, replaces factory filter housing on 2006-2011 Civic Si when using 3in intake tube, works with BLOX short ram systems - Q: What filter media is used and can it be cleaned?
A: High-flow dry synthetic media rated for 99.2% efficiency, washable with non-foaming cleaner and air dry completely before reuse - Q: What warranty covers this air filter kit?
A: BLOX Racing offers limited lifetime warranty on filter media against defects when maintained properly
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective cardboard box measuring 9 x 9 x 8 inches
- Weight: 2.5 lbs





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