TRIUMPH TR7 1998cc 1974-76 - RED PISTON DAMPER SPRING for 1¾” HS6 SU Carburettor
SU HS6 Carburettor. HS6 1¾” SU Carburettor AUD634 (LorR). TRIUMPH TR7. DAMPER PISTON SPRING. (made to original specifications by SU). Piston Damper Cap. Piston Spring. Smooths and regulates Fuel feed from Float Chamber to engine.