AES are out of stock of 4" valves until the week of 21st Sept. 3.5" kits are out of stock until the week of the 14th September. To guarantee you are first in line when they become available, purchase now and we will ship as soon as stock arrives. Otherwise they will be sold out again. They are selling out faster than AES can make them. AES Super Duty Valve Kit: Complete Control for Exhaust Noise The AES Super Duty Valve Kit provides a comprehensive solution for managing your exhaust noise with the flick of a switch. This kit includes a boost pump and solenoid, and it is configurable as single or twin kits with different valve sizes to suit your specific needs. Features: Material: Durable stainless steel construction Robust Design: 5mm thick Super Duty Valve, braced for reinforcement Performance: Actuator opens valve under boost for optimal performance Complete Kit: Includes boost pump and solenoid for easy installation Benefits: Total Control: Effortlessly manage exhaust noise with a simple switch Customizable: Available in single or twin kits and different valve sizes Durability: Built to withstand the demands of high-performance vehicles Why Choose AES Racing Mufflers? AES Racing Mufflers specializes in producing high-quality exhaust components for high-performance vehicles. Located in Wollongong, NSW, AES is dedicated to continuous research and development, creating universal parts that maximize noise reduction without compromising exhaust flow. Renowned for their high-quality, durable parts, AES products deliver exactly as promised. Upgrade your vehicle's exhaust system with the AES Super Duty Valve Kit and experience the perfect blend of performance, durability, and noise control.