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Artikelnummer: 13100393 pe
or close to stock 80" (1340cc) engines
fits Knucklehead/Big Twin Flathead 1936-1947
Artikelnummer: 1107-0260 PE
S&S, reed breather valve. +.030" O.D. - 93-99 Evo B.T. (NU) 541625 Artikelnummer: 13100393 peFor head vented models. Similar in function to the S&S Reed valve for Twin Cam models. Unlike the regular rotating breather valve which is opened and closed by crankshaft rotation and pre set timing, the Reed valve uses actual pressure to open and close on the right moment, at different RPM's this ideal moment varies. This means an advantage for the Reed valve over the regular mechanical timed breather valve in reducing oil carry over, especially in
