BRIAN CROWER 3605-S Exhaust Valve Set 1MM EJ257

( Brand: Brian Crower ), ( Manufacturer Part Number: 3605-S ), ( Part Type: Valve Exhaust )

Review BRIAN CROWER 1mm Exhaust Valve Set For 02-09 fits EJ205 WRX STI 2004–2009

The Brian Crower 3605-S 1mm Exhaust Valve Set is a high-performance aftermarket solution designed for the Subaru WRX and STI models with EJ205 and EJ257 engines from the years 2002 to 2009. This valve set is an essential upgrade for those seeking to enhance the power and efficiency of their Subaru's engine.

The 1mm oversized exhaust valves are made from heat-resistant and durable material, ensuring optimal performance under extreme conditions. These valves provide increased exhaust flow, reducing backpressure and allowing for better scavenging. Consequently, more fuel can be burned efficiently, resulting in increased power and torque.

The set includes four exhaust valves (two intake and two exhaust), four springs, and four retainers. Each component is precision-machined to ensure a perfect fit and optimal function. The valves are designed to work seamlessly with the factory camshafts, making this an ideal upgrade for those looking for a bolt-on power solution.

The installation process is relatively straightforward, and the set comes with detailed instructions to guide you through the process. While this upgrade may require some mechanical skills and tools, it is a manageable task for an experienced DIY enthusiast. For those who prefer professional installation, local automotive shops with experience in Subaru performance upgrades can also handle the installation.

By upgrading to the Brian Crower 3605-S 1mm Exhaust Valve Set, you can expect noticeable improvements in your engine's power output and overall performance. This upgrade is a popular choice among Subaru enthusiasts looking to unlock the full potential of their EJ205 and EJ257 engines. Whether you're a daily driver or a track enthusiast, this valve set is an excellent investment for any Subaru WRX or STI owner.

Pros and Cons of Buying Brian Crower 3605-S 1mm Exhaust Valves for Subaru WRX and STI (02-09)

The Brian Crower 3605-S 1mm Exhaust Valves are aftermarket performance parts designed to enhance the engine's power output and efficiency in Subaru WRX and STI models with EJ205 and EJ257 engines (02-09). This article aims to provide an objective analysis of the potential advantages and disadvantages of investing in these exhaust valves.

1. Improved Performance: The primary advantage of the Brian Crower 1mm exhaust valves is the potential for increased performance. By increasing the exhaust valve diameter, the engine can expel exhaust gases more efficiently, reducing backpressure and allowing the engine to breathe better. This can lead to improved power output and torque.

2. Durability: Brian Crower is known for producing high-quality, durable performance parts. These exhaust valves are no exception. They are designed to withstand the rigors of high-performance driving and are often recommended for those seeking increased power and reliability.

3. Enhanced Throttle Response: The improved exhaust flow can lead to better throttle response, making the engine more responsive and agile. This can result in a more enjoyable driving experience, particularly for those who enjoy aggressive driving.

4. Customization: The Brian Crower 3605-S exhaust valves offer a level of customization for those seeking to fine-tune their engine's performance. The ability to adjust the valve size can allow for a more personalized driving experience and the potential for increased power gains.

1. Cost: The Brian Crower 3605-S exhaust valves are not an inexpensive upgrade. The cost of these valves can be a significant investment for many enthusiasts. It's essential to consider whether the potential performance gains justify the expense.

2. Installation Complexity: Installing the Brian Crower exhaust valves requires a degree of mechanical expertise and the appropriate tools. This can be a deterrent for some enthusiasts who prefer simpler upgrades or lack the necessary skills and resources for the installation.

3. Potential for Engine Damage: Installing larger exhaust valves can potentially lead to engine damage if not done correctly. Improper installation or incorrect valve size can cause issues such as detonation, pre-ignition, or other engine damage. It's crucial to ensure that the installation is performed by a qualified mechanic or someone with extensive knowledge of the engine and the installation process.

4. Potential for Check Engine Light: Installing the Brian Crower exhaust valves can potentially trigger the check engine light. This is due to the engine's sensors detecting the change in exhaust flow and potentially interpreting it as a fault. In most cases, this can be remedied with appropriate adjustments or the use of a performance-oriented ECU.

The Brian Crower 3605-S 1mm exhaust valves offer the potential for significant performance gains for Subaru WRX and STI models with EJ205 and EJ257 engines (02-09). However, they come with a significant investment in terms of cost and installation complexity. Careful consideration of the potential benefits and drawbacks is essential before deciding to purchase these exhaust valves.

For those seeking significant power gains and are willing to invest in the cost and installation complexity, the Brian Crower 3605-S exhaust valves can be an excellent upgrade. However, it's crucial to ensure that the installation is performed by a qualified mechanic or someone with extensive knowledge of the engine and the installation process. Additionally, it may be worth considering other upgrades, such as a performance exhaust system or ECU tuning, to complement the exhaust valves and fully realize the potential performance gains.

Details:

Brian Crower 1mm Over 33mm Exhaust Valve Set for 02-09 WRX/04-09 STI 3605-S: Thumbnails to:: Oversized Fits WRX / 04-09 EJ Engines Part #: 3605-S. Designed forEJ205, EJ255, and EJ257 engines, these oversized valves are crafted from premium stainless steel, engineered for maximum durability, optimized for high boost high RPM conditions. Free Shipping is either USPS Ground, UPS FedEx Smart Post, or Post. Shipping times may very depending on shipping service used.

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part #: 3605 prices

• $206.24-$381.04

specifications voomvalve:

• for models: Ej205, Wrx, Sti
• for years: 2004-2009
• brand: Brian Crower
• mpn: 3605-s
• part type: Valve Exhaust

offer voomvalve:

• availability: In Stock
• sold: 0
• quantity: 3
• options: Ship-to-home
• started: August 14, 2025

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• city: Arden, North Carolina
• # reviews: 33114
• rating: 99.3%

general voomvalve:

• condition: New
• Engines Engine Parts > Valvetrain Components > Valves

returns voomvalve:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

shipping voomvalve:

• class: Standard
• type: Fixed
• service: Standard
• transit: 4-8 Days
• cost: $0.00

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