All Dualoy kits 10% off from June 10 thru July 10, 2024.  This promotion applies only to Dualoy Piston and Ring Kits and orders that ship before September 4, 2024.

Due to high demand, Dualoy pistons are now avaialable for some Cummins and Duramax applications in .75mm oversize.

New Icon pistons now available for the Mopar Early Hemi engines in 472cid and 528cid configurations.

Icon forge pistons now avaialble for the General Motors 604 5.7L crate engine.

The latest addition to the Dualoy line up is the 2017-2022 General Motors Duramax L5P engine.  Pistons available now with our proprietary CrBN PVD coating for extended life and High Output applications.

Silvotite announces new coverage for the late model Toyota 4.0L V6 and 4.7 and 5.7L V8 applications.

Now Available; Forged pistons for the 5.7, 6.1 and 6.4L Gen III Hemi in all of the popular stroke lengths.

Price Adjustment Data Clarification

UEM announces important updates regarding pricing and policies that will come into effect on April 1st, 2024.

Forged pistons now avaialble for the 2014-2020 GM L83 5.3L EcoTec3 engine.  Forged in house with 4032 alloy for NA and 2618 alloy for boosted applications.  

UEM offers a complete selection of In Stock: Forged 4032 Alloy VW Type 1: 92 & 94MM Big Bore Pistons. All pistons feature M42 Skirt Coating, Hard Anodized top land and ring groove. Please note: Barrel spacers or Head gaskets will be needed to dial in the deck height. Always check your deck height.

We have a brand of forged and cast pistons and rings for every segment of the aftermarket.

We have a brand of forged and cast pistons and rings for every segment of the aftermarket.

Stop by UEM booth #1251 at PRI to check out the Brandon James No Prep Kings Camaro - and Meet Brandon!

United Engine & Machine offers complete, application specific rings with most of our pistons.

United Engine & Machine and Speed of Air were awarded the Best New Performance Street Product 2024 at the 2024 SEMA show in Las Vegas, Nevada.

UEM offers coverage for the entire lineage of the venerable Ford F-150 in Silvolite for OEM replacement and Icon for performance.

Dualoy piston and ring kits are now available for the 2010-2020 Mercedes Sprinter with the OM642 3.0L V6!

UEM offers a full line of pistons for the Super Stock and Midwest Modified dirt track applications.   Check it out here!

Testimonial from Shane Ferris - Crew Chief for WarWagon

UEM has complete coverage for the domestic light-duty diesel applications.  Duramax, Cummins and Powerstroke applications for all the popular trucks on the road.  Features like Reduced compression height pistons, Premium PVD ring sets, UltraThermCM thremal barrier and Line2Line skirt coatings make our pistons the best choice for your next diesel build.

Duratec, Coyote, Boss, and Ecoboost, Oh My!  UEM has complete coverage for your late model for perfomance build.  From Silv-O-Lite cast OEM replacement to forged ICON Premium pisston, we include features like PVD ring sets and UltrathermCM thremal barrier coating to give you the durability and performance that you expect!

Check out our complete line of Sport Compact and Import forged Icon pistons.  With features like Hard Anodized crowns, Line2Line abradable skirt coatings and UltrathermCM thermal heat barrier, UEM has the pistons you need for your next build!

UEM has increased coverage for the GM LS applications across the board!  Here's an easy chart to comapre all of our pistons for the popular bore diameters for Gen III, Gen IV and the new Gen V GDI engines.  

New coverage for the late model Gen III Hemi and B1 head applications are in stock at UEM.  From Silv-O-Lite OEM replacement to forged 2618 alloy with gas porting and M42 skirt coating, UEM has your Mopar pistons!