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Circuit Werks Header Exhaust Manifold Toyota MR2 Spyder ZZW30 1999–2007

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Original price $279.99 - Original price $279.99
Original price
$279.99
$279.99 - $279.99
Current price $279.99

The Circuit Werks Header Exhaust Manifold is designed specifically for the 1999–2007 Toyota MR2 Spyder with the 1.8L DOHC 4-cylinder engine. Built around the ZZW30 platform, this header provides an application-specific exhaust manifold solution for enthusiasts upgrading the factory exhaust system.

A 4-2 runner design efficiently merges exhaust gases from all four cylinders, while approximately 40mm primary tubing is sized specifically for the 1.8L engine. The application-specific design makes this header a performance-focused upgrade for naturally aspirated MR2 Spyder builds.

Vehicle-Specific Design: Engineered specifically for the 1999–2007 Toyota MR2 Spyder ZZW30 with the 1.8L DOHC 4-cylinder engine.

4-2 Header Design: Uses a 4-2 exhaust runner configuration designed to efficiently merge exhaust gases from all four cylinders.

40mm Primary Tubing: Primary tube diameter measures approximately 40mm with a manufacturer-specified tolerance of +/- 1mm.

Performance-Oriented Exhaust Flow: Designed to improve exhaust gas flow compared with the restrictive characteristics commonly associated with factory exhaust manifolds.

What's Included

  • (1) Circuit Werks Header Exhaust Manifold

Vehicle Fitment

  • Toyota MR2 Spyder (1999–2007)
  • Chassis: ZZW30
  • Engine: 1.8L DOHC 4-Cylinder

Specifications

  • Brand: Circuit Werks
  • Product Type: Header / Exhaust Manifold
  • Header Configuration: 4-2
  • Primary Tube Diameter: Approximately 40mm (+/- 1mm)
  • Vehicle Application: Toyota MR2 Spyder
  • Chassis: ZZW30
  • Engine: 1.8L DOHC 4-Cylinder

Important Notes

  • Designed for 1999–2007 Toyota MR2 Spyder ZZW30 applications with the 1.8L DOHC 4-cylinder engine.
  • Verify vehicle, chassis, engine, and exhaust configuration before ordering.
  • Primary tube diameter is approximately 40mm with a manufacturer-specified tolerance of +/- 1mm.
  • Exhaust modifications may require additional hardware, gaskets, fabrication, or adjustments depending on the vehicle and existing exhaust configuration.
  • Professional installation is recommended.
  • Check all mounting hardware and exhaust connections after installation and initial heat cycles.
  • Modifying or replacing emissions-related exhaust components may affect emissions compliance and vehicle legality. It is the purchaser's responsibility to verify that installation and use comply with all applicable federal, state, and local regulations.

Why Choose Circuit Werks?

Circuit Werks offers performance exhaust components designed for enthusiast vehicles and application-specific installations. This MR2 Spyder header combines a vehicle-specific design with a 4-2 runner configuration and approximately 40mm primary tubing for drivers upgrading the exhaust system on their ZZW30.

For MR2 Spyder owners looking for an application-specific header solution, the Circuit Werks Header Exhaust Manifold provides a performance-oriented upgrade designed around the 1.8L ZZW30 platform.

About Us

We are passionate Lexus and Toyota enthusiasts dedicated to providing the highest quality aftermarket parts to enhance your ride. Our goal is to help you find the perfect performance upgrade, whether you're building your dream car or just adding that next improvement. We take pride in offering products that we trust for our own vehicles.

Shipping

Shipping times vary based on item availability and specific lead times. You can expect an email with an estimated shipping date within 1-3 days of placing your order. Many in-stock parts ship within 2-5 business days, while certain built-to-order items may take up to 7-10 business days. For back-ordered items, availability may vary, but we will email you with any ETA changes.

Once your items are ready to ship, we will send tracking information via email so you can easily follow your package from our warehouse to your door. Please note, some parts may be shipped separately and could arrive at different times. Shipping costs apply to the lower 48 states, unless stated otherwise, and international orders may be subject to additional customs or duties fees.

What to Expect Upon Delivery

Upon receiving your order, please inspect the items immediately for any damage or missing parts. Verify all items against the packing slip or instructions before starting installation. We cannot be held responsible for costs incurred from delays due to missing items.

If any items are damaged or missing, please get in touch with us within 14 days of receipt so we can assist with a replacement. Claims made after this period will not be honored.

Cancellation Policy

If you need to cancel or modify your order, please contact us as soon as possible. We strive to ship your order quickly, and once processing begins, cancellations may be subject to a restocking fee. Orders canceled within 24 hours of purchase may not incur a fee, but after that time, restocking fees (typically 20%) will apply depending on the items and the stage of fulfillment.

Return Policy

Customer satisfaction is our priority, and we are happy to assist with returns. However, due to the complexity of sourcing and delivering our products, returns are subject to a restocking fee (usually 20%) based on the item and manufacturer.

Before returning any items, please get in touch with us to receive a return authorization. All return requests must be made within 30 days of receiving your merchandise. Once approved, items must be returned within 14 days in their original condition. Improper packaging of returned items may result in customer responsibility for damages.

Customers are responsible for return shipping costs, unless the item is defective or we shipped the wrong item. A trackable shipping method is strongly recommended.

Warranty

We honor all manufacturer warranties and are here to support you in getting the quality products you deserve. However, please note that warranty claims are available to the original purchaser only. In certain situations, manufacturers may handle warranty claims directly, and we are unable to cover costs not specified in the manufacturer's warranty (e.g., shipping, labor). If you have any questions, feel free to reach out to us.

Emissions Notes

All parts and services offered by LunaticsCo are for competition vehicles only. Use on state and federal highways may be a violation of the EPA Clean Air Act. The Clean Air Act can be found at http://www.epa.gov/air/caa/. This document details what are considered violations of the CAA and the corresponding penalties for failure to comply. It should be read in full before purchasing or installing this competition-use-only product. Ensuring that all emissions, noise/sound, and speed/use-related laws are followed is the responsibility of the buyer(s). Installation and use of this product indicate that this disclaimer has been read, acknowledged, and fully understood by both the buyer(s) and installer(s). The buyer(s) assume all associated risks of purchase.

Federal and several state laws prohibit the removal, modification, or rendering inoperative of any part that affects emissions or safety on motor vehicles used on public streets or highways. LunaticsCo assumes no liability for any violations arising out of any federal, state, or provincial emissions or safety requirements on motor vehicles resulting from the customer’s modifications and/or use of LunaticsCo products. It is the responsibility of the customer to determine if their modified vehicle complies with applicable laws.