Header Extensions
Circle Track Header Extensions at JJ Motorsports
Header extensions are designed to fine-tune the length of your exhaust system, enhancing low-end torque and backpressure control. These extensions are ideal for modifieds, street stocks, and other race cars requiring precise exhaust tuning. Combine them with compatible exhaust modifications for optimal car performance.
Shop trusted brands like Schoenfeld for durable steel extensions. Explore related categories such as Circle Track Exhaust Modifications for headers and manifolds or Circle Track Exhaust for complete systems.
Top Circle Track Header Extensions
- Schoenfeld 48in Extension 480035 – Exhaust Pipe Extension Straight 3-1/2 in Diameter 4 ft Long 1 End Expanded Steel Natural Each.
- Schoenfeld 48in Extension 480030 – Exhaust Pipe Extension Straight 3 in Diameter 4 ft Long 1 End Expanded Steel Natural Each.
- Schoenfeld 48in Extension 2.5in Dia 480025 – Exhaust Pipe Extension Straight 2-1/2 in Diameter 4 ft Long 1 End Expanded Steel Natural Each.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Schoenfeld 48in Extension 480035
SCHOENFELD
$37.99Proper exhaust routing is critical for both safety and performance—this extension keeps your exhaust gases directed away from driver compartments and sensitive components. The Schoenfeld 480035 is a...SCH480035- SKU:
- SCH480035
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- MFG Part #:
- 480035
$37.99 -
Schoenfeld 48in Extension 480030
SCHOENFELD
$34.99Exhaust systems demand precise piping to route gases efficiently and maintain backpressure consistency—this extension ensures your system reaches where it needs to go without compromise. The...SCH480030- SKU:
- SCH480030
- Availability:
- Ships Same Business Day
- Weight:
- 5.60 LBS
- MFG Part #:
- 480030
$34.99 -
Schoenfeld 48in Extension 2.5in Dia 480025
SCHOENFELD
$30.99Proper exhaust routing is critical for maintaining backpressure consistency and protecting underbody components from heat damage. This Schoenfeld extension gives you the flexibility to position your...SCH480025- SKU:
- SCH480025
- Availability:
- Ships Same Business Day
- Weight:
- 6.30 LBS
- MFG Part #:
- 480025
$30.99Qty in Cart: 0Quantity:Price:$30.99Subtotal: -
Schoenfeld 36in Extension 360040
SCHOENFELD
$37.99Proper exhaust evacuation is critical for engine performance and longevity, especially in high-performance applications where backpressure directly impacts horsepower and throttle response. The...SCH360040- SKU:
- SCH360040
- Availability:
- Ships Same Business Day
- Weight:
- 7.60 LBS
- MFG Part #:
- 360040
$37.99 -
Schoenfeld 36in Extension 360035
SCHOENFELD
$30.99Proper exhaust ducting is critical for managing heat, protecting undercarriage components, and maintaining engine efficiency—especially in high-performance applications where stock routing falls...SCH360035- SKU:
- SCH360035
- Availability:
- Ships Same Business Day
- Weight:
- 4.95 LBS
- MFG Part #:
- 360035
$30.99 -
Schoenfeld 36in Extension 360030
SCHOENFELD
$29.99Proper exhaust scavenging requires adequate pipe length and diameter consistency to prevent backpressure buildup and maintain peak combustion efficiency. The Schoenfeld 36in Extension delivers the...SCH360030- SKU:
- SCH360030
- Availability:
- Ships Same Business Day
- Weight:
- 4.16 LBS
- MFG Part #:
- 360030
$29.99 -
Schoenfeld 24in Extension 5in Dia 240050
SCHOENFELD
$42.99Managing exhaust flow on a custom-built or modified race engine requires precise ducting to prevent heat-related issues and optimize scavenging efficiency. This Schoenfeld extension provides a...SCH240050- SKU:
- SCH240050
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- MFG Part #:
- 240050
$42.99 -
Schoenfeld 24in Extension 4in Dia 240040
SCHOENFELD
$30.99A proper exhaust extension keeps heat and fumes away from critical engine bay components while maintaining back-pressure efficiency in your racing setup. Whether you're building a custom exhaust...SCH240040- SKU:
- SCH240040
- Availability:
- Ships Same Business Day
- Weight:
- 4.10 LBS
- MFG Part #:
- 240040
$30.99 -
Schoenfeld 24in Extension 240035
SCHOENFELD
$24.99When you're running a high-performance exhaust system, proper pipe routing and clearance are critical to avoiding heat damage and maintaining optimal flow dynamics. The Schoenfeld 24in Extension gets...SCH240035- SKU:
- SCH240035
- Availability:
- Ships Same Business Day
- Weight:
- 3.58 LBS
- MFG Part #:
- 240035
$24.99 -
Schoenfeld 24in Extension 240030
SCHOENFELD
$22.99A quality exhaust extension keeps hot gases directed safely away from critical components and spectators while maintaining optimal scavenging efficiency. The Schoenfeld 240030 delivers a...SCH240030- SKU:
- SCH240030
- Availability:
- Ships Same Business Day
- Weight:
- 2.97 LBS
- MFG Part #:
- 240030
$22.99 -
Schoenfeld 24in Extension 2.5in Dia 240025
SCHOENFELD
$23.99Proper exhaust routing is critical for maximizing scavenging efficiency and maintaining exhaust system integrity in high-performance applications. This Schoenfeld extension pipe bridges gaps in your...SCH240025- SKU:
- SCH240025
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- MFG Part #:
- 240025
$23.99 -
Schoenfeld 12in Extension 120035
SCHOENFELD
$17.99Proper exhaust routing is critical for maintaining backpressure consistency and protecting underbody components from heat damage. The Schoenfeld 12in Extension 120035 provides a straightforward...SCH120035- SKU:
- SCH120035
- Availability:
- Ships Same Business Day
- Weight:
- 1.63 LBS
- MFG Part #:
- 120035
$17.99 -
Schoenfeld 12in Extension 3in Dia 120030
SCHOENFELD
$17.99Proper exhaust flow is critical to maximizing engine performance and preventing backpressure issues in custom or modified exhaust systems. This Schoenfeld extension gives you the flexibility to route...SCH120030- SKU:
- SCH120030
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- MFG Part #:
- 120030
$17.99
