QA1 Circle Track Piston, 1.0 degree - 1.5 degree Linear - Digressive firebird and MIG welded end caps

and MIG welded end caps for protection against road debris

The XSB010 gives you a massive increase in rate over the stock bar (depending on year and model)

The XSB007 gives you a massive increase in rate over the stock bar (depending on year and model)

095” DOM mild steel tubing and 4140 chrome moly threaded tube adapter

1998-present Explorer

QA1 Circle Track Piston, 1.0 degree - 1.5 degree Linear - Digressive firebird and MIG welded end capsThese pistons have flat linear compression and digressive rebound with up to 0. 056" of preload to generate low speed control without excessive high speed forace, helping you maintain grip over surface irregularities. Used on both dirt and asphalt cars, these pistons can generate the force numbers you're looking for to keep the left rear up or keep the front end sealed off. The amount of shim stack preload, shim thickness, and diameter are all able to