If you're looking to boost your engine's efficiency and performance, the Manley Valve - Exhaust, Valve-LS-1 R/M 1.550 is an excellent choice. Designed specifically for the LS engine platform, this valve is engineered to enhance exhaust flow, making it a perfect fit for high-performance builds.
Manley is a trusted name in performance parts, and this exhaust valve is no exception. Its precision engineering ensures that it fits perfectly within your LS engine, allowing for optimal gas flow and improved engine performance. Whether you're on the track or the street, this valve helps your engine breathe easier, which can lead to better horsepower and torque.
This valve is designed for universal fitment with LS engines, making it suitable for various applications. However, we recommend that you verify compatibility with your specific vehicle model before making a purchase. Doing your homework can save you time and ensure you get the right part for your setup.
Users have praised the Manley Valve for its durability and performance. Many report noticeable improvements in their engine's responsiveness and power delivery. Here’s what some customers have to say:
"Installed these valves on my LS build, and I can feel the difference! Great quality and fit." - A satisfied customer
"Manley never disappoints. These valves have transformed my exhaust flow!" - Another happy user
Choosing the right exhaust valve is crucial for maximizing your engine’s potential. The Manley Valve - Exhaust, Valve-LS-1 R/M 1.550 is a reliable option that offers excellent performance and fitment for LS engines. Make sure to do your research to confirm compatibility with your vehicle, and enjoy the benefits of enhanced performance.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Manley Performance, formerly called Manley Speed Equipment, was established in 1966 by Hank Manley shortly after his graduation from Brown University. His interest in the performance and racing traced back to 1960 when, at age 17, he rebuilt a 312 CID Ford V8 engine, installed a camshaft and three two-barrel carbs, and raced a ’56 Thunderbird on New Jersey’s streets. Initially, the company’s product lineup included stainless valves, lifters, camshafts, forged pistons, vanadium valve springs, pushrods, and timing chain kits. By 1998, Manley had outgrown its first Bloomfield, New Jersey facility and bought several acres in Lakewood, New Jersey. It was around this time that the brand’s name formally changed to Manley Performance. Nearly a decade later, the production space doubled in size.
Evolving in the Automotive SpaceLed by GM Michael Tokarchik in 2002, Manley entered the high-performance passenger car market as an OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra. Production reached 2500 rods per week without missing a single delivery date. Ford awarded Manley its highest ever supplier rating. Manley’s presence in the OEM market continued from there as a supplier for the Ford GT. After nearly 50 years since its inception, Manley continues to be globally recognized as the leading manufacturer of performance valves, connecting rods, cylinder head components, pushrods, drive and oil systems, and several other engine parts.
What is Manley’s Specialty?Manley Performance specializes in high-performance engine internals that range from stock replacements to full-on race applications. They have been the standard of the industry since their inception; a fact that still remains true now as they have ventured into new markets. Today, Manley Performance continues to re-define itself in a high-performance aftermarket industry that is constantly evolving. The brand has developed a wide range of new products for growing markets that include sport compact, Ford modular, and Chevy LS. Manley also maintains its leadership role with the traditional V8 engine business.
Get Manley Performance at Vivid RacingIf you are in need of a serious upgrade to your engine, then Manley Performance parts should be on your list. Like all of our suggested manufacturers, Manley uses the best materials available to ensure a quality part for your engine. We carry Manley connecting rods, crankshafts, pistons, and valve components. The large lineup of domestic parts includes sport compact vehicles, Ford modular engines, GM’s LS series internals, and HEMI product upgrades for Chrysler.
If you can’t find what you’re looking for or need help choosing the right part for your car, call our sales team at (480) 966-3040. We are here to make your buying experience a breeze.