Manley Performance

Are you building an engine that needs to handle more power, higher revs or more boost? Manley Performance makes valvetrain and bottom-end parts for performance and racing engines. Here you’ll find valves, valve springs, retainers, pushrods, connecting rods and other parts for engines that must survive heavy loads.

American engine parts for performance and racing

Manley Performance is an American brand specialising in internal engine parts. The brand is especially known for valves and valvetrain components, but also has a wide range of connecting rods and other bottom-end parts. Manley parts are used by engine builders in drag racing, circuit racing and high-power street cars, where components need to handle more than stock parts.

Manley Performance’s key products

Valves in different materials and sizes are among the most important products, for both intake and exhaust. Valve springs, retainers and valve locks make sure the valves close properly at high revs and with more aggressive camshafts. Manley also offers pushrods, rocker arms, forged connecting rods and pistons. See each product for engine fitment.

Buy Manley Performance from us

We specialise in performance parts and know what it takes for a project to succeed. You get a wide selection, competitive prices and personal service if you have questions along the way. Find the Manley Performance solution for your project and take the next step towards more performance.

Frequently asked questions

Why replace valve springs when upgrading the camshaft?

A more aggressive camshaft opens the valves further and faster. Stock springs may struggle to close the valves properly at high revs, so stronger springs are often needed to avoid valve float.

What is the difference between valves made of different materials?

The material affects weight, heat resistance and durability. Exhaust valves in turbo engines, for example, must withstand very high temperatures. Check the specifications on each product to choose the right valve.

How do I know if a part fits my car?

Contact us with your car’s make, model, year and preferably engine code, and we’ll help you find the right part.

What is the delivery time?

The delivery time is shown on each product page. It depends on whether the item is in stock in our own warehouse or with our supplier.