Brian Crower VALVES - 30mm EXHAUST

Fitment: Mitsubishi 4B11 Evo X (2010–2025)

Part #: BC3135

Overview

The Brian Crower 30mm Exhaust Valves are high-quality aftermarket components engineered specifically for the Mitsubishi 4B11 engine found in the Evo X. Designed for automotive enthusiasts and performance tuners, these valves are crafted to withstand increased engine stresses while supporting enhanced airflow and combustion efficiency. Made from premium materials, they help improve engine durability and reliability, especially in high-performance applications. Whether you're building a race-ready setup or seeking to optimize your daily driver, these valves are an excellent upgrade to support your vehicle’s power and longevity.

Key Features

This set of exhaust valves features several key attributes that make them a valuable addition to your engine build:

• Constructed from high-strength, heat-resistant alloys for durability under extreme conditions
• Precisely machined for optimal fit and sealing performance
• 30mm diameter designed to improve exhaust flow and reduce backpressure
• Engineered to support high RPM operation and aggressive tuning
• Designed to enhance engine response and efficiency
• Compatible with OEM and aftermarket valve seats for seamless installation
• Built to meet or exceed OEM specifications for quality and reliability

Construction & Design

These valves are manufactured with meticulous attention to detail, utilizing premium-grade alloys that resist warping and thermal fatigue. The precise machining ensures a perfect fit within the valve seat area, promoting optimal sealing and combustion efficiency. The 30mm exhaust diameter is carefully designed to support improved airflow, which can contribute to increased power output and engine responsiveness.

Installation & Fitment

Installation requires standard engine maintenance procedures and should be performed by qualified technicians familiar with Mitsubishi engine components. Proper valve clearance and seat sealing should be verified during installation to ensure optimal performance.

What’s Included

This product package includes a set of high-performance exhaust valves designed specifically for the Mitsubishi 4B11 engine. Hardware or additional components are not included and should be sourced separately if required.