The Schelle Racing 12mm Big Bore V2 Bevel Screw Mount Shock Piston is a 3-1.5mm Hole Piston with a beveled edge that fits V2 12mm shock shafts by Team Associated with "screw-on" pistons. Ideal for 4wd rear with 30 wt oil, and also great front and rear for B6 using 35 wt front and 30wt rear oils.
These pistons have a 45 degree bevel edge on the bottom side which allows for quicker rebound damping. Lighter rebound damping (rebound= extension) means that the shock can more quickly respond after bumps in the track, keeping the tires from hopping. Also on large jump landings, the lighter rebound damping keeps the wheels on the track as the chassis recovers from bottoming. This translates to added stability and predictablility. We recommend the 3x1.4 in the rear suspension of any 2wd vehicle starting with 30 wt. silicone shock fluid. The additional holes will absorb bumps and give more overall traction compared to a 2x1.6 piston.
These pistons are sold two per package and each pair comes with the Schelle Shock Piston Tunning Guide. The Tuning Guide explains the handling characteristics of each piston going from the lowest damping (low resistance) to highest damping.