When it comes to enhancing your vehicle's performance, the Manley 1.677 Triple Valve Springs are a standout choice for serious racers and enthusiasts alike. Tailored specifically for Sportsman and Bracket Classes, these springs are engineered to deliver unmatched performance and stability, making them an essential upgrade for your engine.
These valve springs provide a robust solution for racers looking to push their engines to the limit. The triple spring design offers enhanced stability, which is critical during high RPMs, reducing the risk of valve float. With a high installed pressure, you can count on these springs to keep your valves seated firmly, ensuring optimal performance on the track.
The Manley 1.677 Triple Valve Springs (Part Number 221448-16) are compatible with a variety of performance applications. Whether you're upgrading your existing setup or building a new engine, these springs are designed to fit seamlessly into your valve train, providing the reliability and performance you need.
Users have praised the Manley 221448-16 springs for their durability and performance. Many have noted significant improvements in their engine’s responsiveness and overall stability during races. Here’s what some customers are saying:
Upgrade your racing experience with the Manley 1.677 Triple Valve Springs. Designed for those who demand the best, these springs are your ticket to improved stability and performance on the track.
⚠ 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.