1 set = 2 pistons of the same type + 2 low lock nuts These pistons should be used in the REAR SUSPENSION, with the valve ABOVE the pistons.compression 8 holes rebound 8 holes + 2 holesValve shock pistons 8x1.3 + 2x1.1 Conical (O.D. 15.90mm/I.D. 2.6mm/H. 2. £26.00PriceBrand*SelectAdd to CartBuy Now