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SKU: 100-8591 | UPC: 024844199584
K&N 100-8591 Custom Racing Assembly Carbon Fiber 4in Air Box w/o Base - Large
K&N 100-8591 Custom Racing Assembly is a sprint car style carbon fiber air box without base plate designed for racers using traditional multi-Siamese 4in velocity stacks. This large air box ensures high airflow to boost horsepower while maintaining excellent filtration in demanding racing conditions. The washable reusable filter services easily with K&N oil and cleaner for long-term performance in sprint cars midgets and dragsters.
Key Features
- Carbon Fiber Construction: Ultra-lightweight material reduces overall vehicle weight for better racing handling and speed
- High Airflow Design: Ample air volume supports engine power needs without restricting intake in high-RPM racing
- Excellent Filtration: Captures dirt and debris to protect engine while allowing maximum clean air through
- Washable Reusable Filter: Clean and re-oil for repeated use cutting maintenance costs over paper filters
- Horsepower Gains: Engineered to deliver noticeable power increases in custom racing setups
Product Notes
- Base plate not included requires custom fabrication or compatible K&N base for mounting
- Service filter after every race or 50 hours using K&N cleaner and oil kit
- Avoid extreme heat exposure during storage to preserve carbon fiber integrity
Installation Notes
- Professional installation recommended.
- Fits over four 4in Siamese velocity stacks secure with provided hardware or custom clamps
- Compatible with most open-wheel racing carburetors and throttle bodies no base means adaptable mounting
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Racing | Sprint Cars | Midgets Winged Non-Winged |
| Universal | Racing | Dragsters | Open Wheel |
| Universal | Racing | Midgets | Custom Builds |
Why Choose K&N?
- Decades of racing dominance with filters trusted by champions worldwide
- Proven airflow technology used in dirt track and oval racing victories
- Precision-molded carbon fiber for exact fit and durability under race stress
Frequently Asked Questions
-
Q: Will this air box fit my sprint car setup?
A: Yes it mounts directly over standard 4in multi-Siamese velocity stacks common on most sprint cars midgets and dragsters -
Q: What material is the air box made from?
A: High-grade carbon fiber for extreme lightness at just 1.9 lbs and resistance to heat and vibration -
Q: What is the filter warranty and service interval?
A: K&N racing filters carry a limited lifetime warranty clean after every event or 50 hours of use
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure box 19.75 x 17.25 x 7.75 inches
- Weight: 1.90 lbs
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