From Schelle Racing Innovations:
New to our popular line of V2 Associated 12mm pistons (screw-on type) we are now offering 3 new variants. The 3 x 1.5mm Flat pistons are popular for 2wd and 4wd buggies in rear. Also, we are offering a new 3+1 line of split hole pistons, with the +1 additional hole added to give more grip and forgiveness in bumpy conditions compared to a standard 3-hole. The addition of the small 4th hole gives less low-speed damping resistance, resulting in more traction. It also alters the damping progression relative to a conventional piston, giving less resistance initially before ramping as the shock speed increases.
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