XRAY racers can now run the signature AVID machined piston setup on the XB4 buggy.   The AV1033 pistons are custom machined for XB4 shocks to tune high speed and low speed damping separately with 2 large 1.5mm (or 1.6mm) holes and 2 small 1.1mm holes (we call it the 2+2 piston).  AVID’s test drivers found that […]