Seller notes

FROM BIG DOG MOTORCYCLES surplus........... NEW S&S CYCLE COMPRESSION RELEASE HOLE PLUG- SET OF 2. PART# 90-4916. HH PLUG KIT 14MM . INCLUDES (2) 50-7094 AND (2) 90-4916-A. 1.25 THREAD PITCH Designed to be used in S&S cylinder heads for Twin Cam, 4 bore Evolution big twin, and Super Sidewinder Plus style S&S engines Consists of a small valve that opens during starting and allows a portion of the cylinder pressure to escape into the exhaust port of the cylinder head Reduced cylinder pressure make...

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