Here at Performance Unlimited Engineering, we specialise in custom applications, designing pistons for the last 30 years.

Shipments every week by airfreight, allow us to provide some of the best lead times on none stock parts

Performance Unlimited are a JE Piston distributor for UK and Europe, and have thorough knowledge on all products available. Whilst the JE website offers a wealth of technical information and support, we are based in York, and are able to answer most queries very quickly. We supply the whole range of JE parts to the UK and Europe. We try to proactively cater for our clients’ enquiries. For example, a popular query is how to identify your JE Pistons part numbers. To place and order give us a call and we aim to turn your order around ASAP. The company has a range of helpful YouTube videos.

JE Pistons Has The Fastest Custom Piston Lead Time in the Industry

JE Pistons

The company has over 60 years experience serving top professionals and is one of the world’s premier manufacturer of high performance forged pistons for the most demanding racing applications. This winning record speaks for itself, with championships in NASCAR’s Nextel Cup, Baja 1000, NHRA (from Stock Eliminator to Top Fuel), Busch Grand National and Craftsman Truck series’, Indy 500,  Trans-Am, 24 Hours of Daytona and Lemans, World of Outlaws, APBA, Paris to Dakar and plenty more! They also have the most complete automotive catalog lineup with over 1100 part numbers on the shelf which can be ordered by us, their UK official No.1 Distributor! Go to the JE Pistons / SRP web site. The company continues to develop leading piston products, which we often cover in our new products section. Their website boasts specification sheets, terminology, technical drawings and videos, so it is a useful tool for any JE Piston buyer.

SRP Professional pistons

SRP pistons include innovative features used in professional racing such as lightweight forged side relief (FSR) forgings, high quality wrist pins, and precision CNC machined ring grooves and skirts. Furthermore every package includes JE Pro Seal Premium Piston Rings. The included ring set features a 1.2 premium steel top ring, 1.5mm Napier (hooked face) second ring and 3.0mm standard tension oil ring. Each piston is designed and produced in the US at the advanced manufacturing center.

Product Manager, Alan Stevenson explained “This new line of SRP Pistons will change everything the industry knows about affordable forged pistons. The features you would normally find in a high quality set  can be found at an affordable price. There is nothing comparable on the market.”  The development of  the product took place over the course of an entire year. The  designs were created using 3D computer modelling and tested for strength using Finite Element Analysis (FEA). 

Multiple revisions were made to optimize the strength and weight before manufacturing started. Unlike other  manufacturers, JE/SRP Pistons manufacture billet pistons from solid pucks of aluminum for dyno testing in actual engines before approving the final forging designs. “This gives us the opportunity to make small adjustments to the design to improve performance and strength prior to adding them to our catalog. We also verify our products outperform our competitors” said Design Engineer, Moises Romo.

Custom JE Pistons

Samples are digitized on one of the companies three CMM’s (Coordinate measuring machine). Using this data they then create a Solid Works CAD which then allows us to make modifications to meet the customer’s requirements to the model prior to the custom piston being manufactured.

Contact Performance Unlimited who will be happy to advise and supply the best pistons for your requirement. Click to see our other makes of piston