12mm 4 Hole Big Bore Pistons

3 hole 12mm big bore pistons with o rings. Formerly GFR-4152 and 57-1046

Big bore piston with o-rings.  4 hole with 2 different sized holes.  Works best on rougher tracks.  Comes in a set of 4. Formerly GFR-4154 and 57-1109

Big bore 3 hole piston compatible with the QS-5049, QS-5050, QS-502, and QS-5053 shock shafts

Big bore 3 hole piston compatible with the QS-5049, QS-5050, QS-502, and QS-5053 shock shafts

1 set of 4 aluminum 4 hole pistons with o-rings.     Compatibility: IRS Shocks GFRP/HD Cars Formerly GFR-4074 and 57-1094

4 hole pistons with o rings.  Designed to use with metric shaft cars.  

Set of four blank big bore pistons

1 set of 4 aluminum 4 hole pistons with o-rings.     Compatibility: IRS Shocks GFRP/HD Cars

Small bore piston with o-rings.  4 hole with 2 different sized holes.  Works best on rougher tracks.  Comes in a set of 4. Formerly GFR-4075 and 57-1258