Original Cannondale 2Spring air piston assembly, compatible with Supermax 1.0 forks, such as those on the Trigger 29. It replaces the older SoloAir piston, offering an exact fit and performance upgrade, plus reduced risk of broken wave springs. Kit includes one 2Spring air piston kit and thread lock compound. Upper air volume assembly not included; consider replacing air volume seals with our 100 hour service kit (part number 100HR.3610) during installation. Browse related items in 'Lefty + Headshok Parts' > 'Lefty/Headshok Air Pistons + Volume Reducers'. Currently in stock: ready to ship or pick up ASAP from Utah. UPC: 884603674796. Manufacturer Part Number: CK5027U00OS 712549-Q3-L20D02.