Triumph unit 500 twin piston set .020 over pistons Early 1959 to 1966 T100C T100 GPM crimp This drain plug is brand

This drain plug is brand new and never been installed

Thunderbolt

and pilot jet to work correctly on any dual carb Triumph or BSA that uses a 30mm carb

straight through

Measures 7 3/4" across longest part

Triumph unit 500 twin piston set .020 over pistons Early 1959 to 1966 T100C T100 GPM crimp This drain plug is brandThis product is New Triumph unit 500 twin piston set . 020 over pistons Early 1959 to 1966 T100C T100 This set is made in Italy You get pistons and rings as pictured. Triumph 650 Twin Size Inch mm Std 2. 795 71 +10 2. 805 71. 25 +20 2. 815 71. 50 +40 2. 835 72 +60 2. 855 72. 50 +80 2. 875 73 +100 2. 895 73. 50 Triumph 750 Twin Size Inch mm Std 2. 9916 76 +10 3. 002 76. 25 +20 3. 012 76. 50 +40 3. 032 77 +60 3. 052 77. 50 +80 3. 072 78 +100 3. 092 78.