S&S Cycle 36-84 BT 3-7/16in x Up To 4-3/4in Stroke HC Piston Set - Standard Intake Manifold Flange FITMENT: Aprilia RS660 (all) Tuono

FITMENT: Aprilia RS660 (all) Tuono 660 (all)

CARBON THUNDER SILENCER CARBON END CAP FOR ARROW COLLECTORS

16-gauge absorptive mufflers with 2” inlets and removable billet tips

Stock fuelling on the 790 is designed to get around EU emissions control rather than performance

S&S Cycle 36-84 BT 3-7/16in x Up To 4-3/4in Stroke HC Piston Set - Standard Intake Manifold Flange FITMENT: Aprilia RS660 (all) TuonoThese 3 7 16" standard bore, standard compression stroker pistons are part of an S&S stock bore stroker kit for 1936 '84 HD big twins, and are designed to be used in conjunction with S&S stroker flywheels. Flywheels of the following strokes may be used for the following displacements: 4 1 2" stroke 84" @ 8. 4: 1 compression, 4 5 8" stroke 86" @ 9. 4: 1 compression, 4 3 4" stroke 88" @10. 8: 1 compression.