-20%
Click to zoom in
SKU: BXIM-00307
BLOX Racing 4.0inch Composite Velocity Stack BXIM-00307 Fits 2002-2011 Honda Civic Si Acura RSX K-Series
BLOX Racing 4.0inch composite velocity stack enhances intake airflow on K-series engines. It bolts onto BLOX intake manifolds for 2002-2006 Acura RSX and 2002-2011 Honda Civic Si models. This design channels air smoothly into the plenum for better throttle response and horsepower gains across the RPM range.
Key Features
- Composite Material: High-temperature molded construction resists heat and keeps weight under 4 ounces for reduced engine stress
- 4.0 Inch Diameter: Matches 70mm throttle body inlets on BLOX manifolds to support high-volume airflow without restriction
- Bellmouth Entry: Smooth curved lip eliminates turbulence and accelerates incoming air for improved cylinder filling
- Bolt-On Fitment: Direct attachment to BLOX plenum-style intake manifolds like BXIM-00300 series with included hardware
- Performance Tuning: Increases mid-range torque and top-end power ideal for track or street driven imports
Product Notes
- Pair with BLOX Racing intake manifold for best results on modified K20 or K24 engines
- Inspect throttle body gasket during install to ensure airtight seal
- Packages in foam-lined box measuring 6 x 6 x 4 inches for protection
Installation Notes
- Professional installation recommended.
- Remove stock air inlet cover and align stack with manifold opening
- Uses M6 bolts compatible with BLOX BXIM-00300 BXIM-00301 manifolds no drilling needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2004 | Acura | RSX | Type-S K20A2 |
| 2005-2006 | Acura | RSX | Type-S K20Z1 |
| 2002-2005 | Honda | Civic Si | EP3 K20A3 |
| 2006-2011 | Honda | Civic Si | FA5/FG2 K20Z3 |
Why Choose BLOX Racing?
- 20 years leading import performance parts for Honda enthusiasts
- Focuses on airflow dynamics tested on dyno and track
- Manufactures in-house for consistent fit and finish quality
Frequently Asked Questions
-
Q: Will this fit non-BLOX intake manifolds on K20 engines?
A: Designed specifically for BLOX plenum manifolds like BXIM-00300. Inlet flange matches 4 inch opening on these units. Adapters may be needed for others. -
Q: What material resists engine bay heat?
A: Injection-molded high-temp composite plastic withstands 250F degrees without warping or cracking unlike aluminum options. -
Q: How long does install take?
A: 15-30 minutes with basic hand tools. Bolt directly after removing air inlet. No tuning required for basic setup.
Shipping & Handling
- Method: UPS Ground or USPS Priority Mail
- Availability: In stock - ships same or next business day
- Packaging: 6 x 6 x 4 inch box with protective inserts
- Weight: 0.4 lbs product shipping weight
Air Filters
Air filters and intake filtration parts for cars, trucks, SUVs, Jeeps, and diesel platforms are stocked at Black Ops Auto Works. Shop direct-fit filters, drop-in replacement filters, universal clamp-on filters, cabin air filters, HVAC filters, engine breather filters, pre-filters, and velocity stacks for Hellcat, Trackhawk, TRX, Grand Cherokee, Challenger, Charger, Camaro, Corvette, Mustang, F-150, Tacoma, Tundra, BMW, and Honda platforms. Every product is filterable by year, make, model, trim, engine, and filter dimension so the correct part ships the first time. Black Ops Auto Works carries 3,397 air filter SKUs across direct-fit, universal, cabin, and pre-filter categories. What This Collection Covers Air filters remove dirt, dust, and debris from air entering the engine or cabin. This collection spans OE-style direct-fit and drop-in filters, universal cone and clamp-on filters for custom intakes, cabin and HVAC filters for interior air, engine breather filters for crankcase ...
View Air Filters Products
BLOX Racing
BLOX Racing performance parts for Honda, Acura, Subaru, Toyota, Scion, and Mitsubishi platforms are stocked at Black Ops Auto Works. Shop sway bars, engine mounts, intake manifolds, valve covers, fuel rails, and suspension components engineered specifically for the import performance market. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 363 BLOX Racing SKUs across suspension, engine, and drivetrain categories. What This Brand Covers BLOX Racing builds performance suspension and engine components focused exclusively on the import tuning scene. Black Ops Auto Works stocks BLOX Racing products for Honda Civic and Civic Si, Acura Integra, Subaru BRZ, Toyota 86 and Scion FR-S, and Mitsubishi platforms, ranging from bolt-on suspension upgrades to fully machined billet engine components. Import-Focused Engineering BLOX Racing designs every part around the specific chassis and engine ...
View BLOX Racing Products
Velocity Stacks
Welcome to our Velocity Stacks collection, where you will find an exclusive range of high-performance products designed to optimize your vehicle's air intake system. Our curated selection is perfect for automotive enthusiasts looking to boost horsepower and efficiency. What Are Velocity Stacks? Velocity stacks are specialized components used in air intake systems to improve airflow and increase engine performance. They are engineered to create a smooth transition of air into the engine, which can lead to: Increased Horsepower: Enhance engine output for better acceleration. Improved Fuel Efficiency: Achieve optimal fuel consumption rates. Enhanced Throttle Response: Experience quicker acceleration and response times. Why Choose Our Velocity Stacks? When you choose our Velocity Stacks, you are selecting products that are: High Quality: Made from durable materials to withstand rigorous conditions. Performance-Driven: Designed to deliver measurable improvements in vehicle per...
View Velocity Stacks Products