SDI Free Piston Assembly - 49 mm SDEFFPA-TAC

Stock plastic pistons are a liability in high-demand applications—they lack the durability and consistency needed for reliable performance under pressure. The SDI Free Piston Assembly replaces that weak link with a purpose-built component that maintains tolerances and withstands repeated cycling without degradation. Built in the U.S.A. and fully rebuildable, this assembly delivers the dependability professional racers and serious mechanics demand.

This 49 mm free piston assembly arrives complete with all necessary bushings, o-rings, and seals, making installation straightforward whether you're performing maintenance or upgrading an existing setup. The rebuildable design means you can refresh internal components as needed, maximizing service life and protecting your investment over the long term.

• 49 mm bore diameter
• Durable metal construction
• Includes bushings, o-rings, seals
• Fully rebuildable design
• Bolt-on installation
• U.S.A. manufactured
• Enhanced performance durability
• Superior to plastic alternatives