Upgrade your Honda K20A3 or K24A engine with the Manley 0.545" Valve Springs & Retainer Kit, designed to enhance your engine's performance and reliability. This kit includes everything you need for a robust valve train that can handle high lift camshafts without compromising on quality or longevity.
Manley valve springs are crafted from high-quality, super clean alloy that minimizes stress, ensuring they stand the test of time. Whether you're hitting the track or just looking for a reliable upgrade, these springs are built to last.
The titanium retainers included in this kit are manufactured using advanced double spindle CNC machines, ensuring precise tolerances and a perfect installed height. This attention to detail makes a significant difference in performance.
To ensure that everything stays in place, the valve locks are produced with precision in Swiss turning centers. This guarantees a perfect fit and secure mating with the retainers, which is crucial for maintaining performance under high-stress conditions.
This kit is specifically designed to fit the Honda K20A3 and K24A engines, making it an ideal upgrade for enthusiasts looking to enhance their vehicle's performance.
Many customers have praised the Manley 26145K Valve Springs & Retainer Kit for its exceptional quality and performance. Users have noted improved throttle response and enhanced reliability in high-performance applications. Here's what some of them have to say:
Upgrade your Honda K20A3 or K24A engine today with the Manley 0.545" Valve Springs & Retainer Kit. Experience the difference in performance and reliability!
⚠ 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.