BSA UNIT BOITE

BSA unit singles have used  a confusing number of chain sizes, please check what size chain you need.

DRAIN PLUG GEARBOX, UNF THREAD 21-1857 ! 13TPI

KICKSTART SPRING UNIT SINGLES 40-3275 ! Triumph number 57-2687

HIGH GEAR BUSH 41-3045 !

FIRST GEAR 27T LAYSHAFT B25 41-3087 !

SPROCKET NUT UNIT SINGLES 57-1434 ! BSA number 40-3051 1 1/8" inner 1 7/16" outer

SPROCKET B25/44/50 WIDE 17T 57-1558 ! For wide chain 5/8" x 3/8" (or 530 in Japanese)

CIRCLIP ON LAYSHAFT 57-2669 ! Old number 41-3078

THRUST WASHER 57-2672 ! Old number 40-3279

KICKSTART RATCHET B25/44 57-2681 ! 40-3279

TAB WASHER ON EARLY MAINSHAFTS 57-2685 !

B50 KICKSTART SHAFT 57-4639 !

NEEDLE BEARING LAYSHAFT 70-8005 ! BSA number 40-3292 Torrington B108

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