Alpha Big End Bearings
423-Series
Alpha is the world's foremost
manufacturer of crankpin bearing assemblies for single cylinder British bikes
made with one piece connecting rods and built up cranks. Alpha crankpin
assemblies will replace original roller bearing assemblies, or upgrade plain
bearing Royal Enfields and Tiger Cubs to roller style.
An Alpha "drop in" roller
bearing conversion for unit BSA singles that were originally equipped with RH
bushings is also stocked by BCS under
part number 40-0391/A
Alpha big end bearings are
factory dipped in oil, then in a plastic sealing coat, to eliminate corrosion
and possible damage during storage and shipping. Buying a matched, fresh,
complete Alpha assembly is better than searching the world for individual
shop-soiled New Old Stock race, crankpin, cage and rollers, usually paying more
and getting less.
Alpha Bearings currently stocked
by BCS are listed here, but models and applications not listed here are also
available from us upon request, as Authorized Alpha Importers and Distributors:
423-AMC6 crankpin assy, AJS/MATCHLESS single EA
423-B14 crankpin assy, Preunit 1 cyl, exc.GS EA
423-B14/GS crankpin assy, Goldstar EA
423-B24 crankpin assy, 1961-63 C15, 1962-63 B40 EA
423-B25 crankpin assy, 1964on C15, 65on B40 EA
423-B26 crankpin assy, BSA VICTOR ST
423-B26/S crankpin assy, BSA VICTOR, Heavy Duty EA
423-B28 crankpin assy, BSA B50, steel caged EA
423-N3 crankpin assy, NORTON, exc. OHC ST
423-RE13 crankpin assy, ROYAL ENFIELD ST
423-T11 crankpin assy, CUB, 1964ON, T11S ST
423-T7 crankpin assy, CUB/TERRIER, PRE56 ST
423-T8 crankpin assy, CUB, 1956-61 T8S ST
423-T9 crankpin assy, CUB, 1962-63 ST
Carrillo heavy duty connecting rods are the ideal upgrade to the stock rods, and the perfect time to install them is when replacing the crankpin bearing. Contact BCS with the part # for the stock conrod for current availability and price of the Carrillo rod, and forget about breaking a rod, ever!