BSA - Birmingham Small Arms


Whether you view a BSA as "Best Scrambler Around," or "Bastard Stopped Again," there's no denying that a BSA is an excellent choice for vintage MX, whether you're competing in Premier, Classic or Sportsman classes.

For general parts, see the product index on the left.

BSA Models
Parts Available for BSA
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Rear Sprocket, Alloy
Top-quality, US-made alloy rear sprockets for every application under the sun, in any chain size. Far too many to list here, please give us a ring with your requirements. Quick turnaround for custom items, competitive prices (varies by tooth count and chain size).
Rear Sprocket, Alloy -
Top-quality, US-made alloy rear sprockets for every application under the sun, in any chain size. Far too many to list here, please give us a ring with your requirements. Quick turnaround for custom items, competitive prices (varies by tooth count and chain size).
Motorcycle Model #18, #42, #48, #68, 9E-37A, A10, A50, A65, Alpina, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Cota, CR125, CR250, G85, Gold Star, Griffon, Hawkstone/MCS, HT5, M.A.R., Matador, Metisse, Micro Metisse, MkIII, MkIV, MX250, Phantom, Pursang, Q.U.B., RL250, Scottish, Sherpa T, Stiletto, Stormer, T100, T120, T140, Tiger Cub, TL125, TL250, TLR200/Reflex, TM125, TR6, TY175, TY250, TY80, XL250, YZ400
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, CZ, Greeves, Honda, Husqvarna, Kawasaki, Maico, Matchless, Montesa, Ossa, Penton, Rickman, Suzuki, Triumph, Villiers, Yamaha
   
Rear Sprocket, Alloy
Price
Description Top-quality, US-made alloy rear sprockets for every application under the sun, in any chain size. Far too many to list here, please give us a ring with your requirements. Quick turnaround for custom items, competitive prices (varies by tooth count and chain size).
Motorcycle Model #18, #42, #48, #68, 9E-37A, A10, A50, A65, Alpina, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Cota, CR125, CR250, G85, Gold Star, Griffon, Hawkstone/MCS, HT5, M.A.R., Matador, Metisse, Micro Metisse, MkIII, MkIV, MX250, Phantom, Pursang, Q.U.B., RL250, Scottish, Sherpa T, Stiletto, Stormer, T100, T120, T140, Tiger Cub, TL125, TL250, TLR200/Reflex, TM125, TR6, TY175, TY250, TY80, XL250, YZ400
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, CZ, Greeves, Honda, Husqvarna, Kawasaki, Maico, Matchless, Montesa, Ossa, Penton, Rickman, Suzuki, Triumph, Villiers, Yamaha
Individual Cylindrical Rollers, Bearings
Separate rollers used in many classic-engine applications; consult your parts book or call for specifics. Your choice of sizes; sold individually.
Individual Cylindrical Rollers, Bearings - $0.70
Separate rollers used in many classic-engine applications; consult your parts book or call for specifics. Your choice of sizes; sold individually.
Motorcycle Model Anglian, Any, B25, B40, B44, B50, C15, Challenger, Gold Star, Hawkstone/MCS, HT5, Scottish
Motorcycle Manufacturer Any, Ariel, BSA, Cotton, Greeves, Matchless, Villiers
   
Individual Cylindrical Rollers, Bearings
Price $0.70
Description Separate rollers used in many classic-engine applications; consult your parts book or call for specifics. Your choice of sizes; sold individually.
Motorcycle Model Anglian, Any, B25, B40, B44, B50, C15, Challenger, Gold Star, Hawkstone/MCS, HT5, Scottish
Motorcycle Manufacturer Any, Ariel, BSA, Cotton, Greeves, Matchless, Villiers
Amal Concentric Float Drain Washer
Nice, thick, soft drain-plug washer for Amal Concentric float bowls -- typically British and perhaps a few Spanish carbs. #622/151
Amal Concentric Float Drain Washer - $0.75
Nice, thick, soft drain-plug washer for Amal Concentric float bowls -- typically British and perhaps a few Spanish carbs. #622/151
Motorcycle Model A10, A50, A65, Anglian, Any, B25, B40, B44, B50, C15, Challenger, G85, Gold Star, Griffon, HT5, MkIII, MkIV, Q.U.B., Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
   
Amal Concentric Float Drain Washer
Price $0.75
Description Nice, thick, soft drain-plug washer for Amal Concentric float bowls -- typically British and perhaps a few Spanish carbs. #622/151
Motorcycle Model A10, A50, A65, Anglian, Any, B25, B40, B44, B50, C15, Challenger, G85, Gold Star, Griffon, HT5, MkIII, MkIV, Q.U.B., Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
Amal Banjo Bolt Fiber Washer
Fiber washer to seal the fuel-line banjo bolt on all Amal Concentric and MkII carburetors. Nominal size is 3/8 x 1/2 x 1/32-inch. Part #13/163
Amal Banjo Bolt Fiber Washer - $0.90
Fiber washer to seal the fuel-line banjo bolt on all Amal Concentric and MkII carburetors. Nominal size is 3/8 x 1/2 x 1/32-inch. Part #13/163
Motorcycle Model #18, #42, #48, #68, A10, A50, A65, Alpina, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Cota, G85, Gold Star, Griffon, HT5, M.A.R., Matador, Metisse, MkIII, MkIV, Pursang, Q.U.B., Sherpa T, Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, Greeves, Matchless, Montesa, Ossa, Rickman, Triumph
   
Amal Banjo Bolt Fiber Washer
Price $0.90
Description Fiber washer to seal the fuel-line banjo bolt on all Amal Concentric and MkII carburetors. Nominal size is 3/8 x 1/2 x 1/32-inch. Part #13/163
Motorcycle Model #18, #42, #48, #68, A10, A50, A65, Alpina, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Cota, G85, Gold Star, Griffon, HT5, M.A.R., Matador, Metisse, MkIII, MkIV, Pursang, Q.U.B., Sherpa T, Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, Greeves, Matchless, Montesa, Ossa, Rickman, Triumph
Amal O-Ring, Fuel Mixture/Idle Screws
Small o-ring as fitted to the idle and air/fuel mixture-adjusting screws on Amal Concentric and MkII carburetors. #622/082
Amal O-Ring, Fuel Mixture/Idle Screws - $0.90
Small o-ring as fitted to the idle and air/fuel mixture-adjusting screws on Amal Concentric and MkII carburetors. #622/082
Motorcycle Model #18, #42, #48, #68, A10, A50, A65, Alpina, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Cota, G85, Gold Star, Griffon, HT5, M.A.R., Matador, Metisse, MkIII, MkIV, Pursang, Q.U.B., Sherpa T, Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, Greeves, Matchless, Montesa, Ossa, Rickman, Triumph
   
Amal O-Ring, Fuel Mixture/Idle Screws
Price $0.90
Description Small o-ring as fitted to the idle and air/fuel mixture-adjusting screws on Amal Concentric and MkII carburetors. #622/082
Motorcycle Model #18, #42, #48, #68, A10, A50, A65, Alpina, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Cota, G85, Gold Star, Griffon, HT5, M.A.R., Matador, Metisse, MkIII, MkIV, Pursang, Q.U.B., Sherpa T, Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, Greeves, Matchless, Montesa, Ossa, Rickman, Triumph
Amal Throttle Ferrule, Small
Throttle ferrule/cable stop for chrome British throttles with a 1/4-inch straight hole in the front. Accepts cable diameter of .220-inches. Sold each. Amal OE Part #366/2, fits some Doherty throttles, too.
Amal Throttle Ferrule, Small - $1.00
Throttle ferrule/cable stop for chrome British throttles with a 1/4-inch straight hole in the front. Accepts cable diameter of .220-inches. Sold each. Amal OE Part #366/2, fits some Doherty throttles, too.
Motorcycle Model Any
Motorcycle Manufacturer AJS, Any, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
   
Amal Throttle Ferrule, Small
Price $1.00
Description Throttle ferrule/cable stop for chrome British throttles with a 1/4-inch straight hole in the front. Accepts cable diameter of .220-inches. Sold each. Amal OE Part #366/2, fits some Doherty throttles, too.
Motorcycle Model Any
Motorcycle Manufacturer AJS, Any, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
Amal Throttle Ferrule, Large
Throttle ferrule/cable stop for chrome British throttles with a 5/16-inch straight hole in the front. Accepts cable diameter of .220-inches. Sold each. Amal OE Part #16/011, fits some Doherty throttles, too.
Amal Throttle Ferrule, Large - $1.00
Throttle ferrule/cable stop for chrome British throttles with a 5/16-inch straight hole in the front. Accepts cable diameter of .220-inches. Sold each. Amal OE Part #16/011, fits some Doherty throttles, too.
Motorcycle Model Any
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
   
Amal Throttle Ferrule, Large
Price $1.00
Description Throttle ferrule/cable stop for chrome British throttles with a 5/16-inch straight hole in the front. Accepts cable diameter of .220-inches. Sold each. Amal OE Part #16/011, fits some Doherty throttles, too.
Motorcycle Model Any
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
Amal Concentric Flange O-Ring
Mounting-flange o-ring for Amal Concentric carburetors that require such a thing -- typically British and a few Spanish carbs, but not OE Bultaco. #622/101
Amal Concentric Flange O-Ring - $1.25
Mounting-flange o-ring for Amal Concentric carburetors that require such a thing -- typically British and a few Spanish carbs, but not OE Bultaco. #622/101
Motorcycle Model A10, A50, A65, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Cota, G85, Gold Star, Griffon, HT5, MkIII, MkIV, Q.U.B., Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, Greeves, Matchless, Montesa, Rickman, Triumph
   
Amal Concentric Flange O-Ring
Price $1.25
Description Mounting-flange o-ring for Amal Concentric carburetors that require such a thing -- typically British and a few Spanish carbs, but not OE Bultaco. #622/101
Motorcycle Model A10, A50, A65, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Cota, G85, Gold Star, Griffon, HT5, MkIII, MkIV, Q.U.B., Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, Greeves, Matchless, Montesa, Rickman, Triumph
Gas Cap Gaskets
Gas Cap Gaskets - $1.25
Replacement cork gaskets are suitable for the quarter-turn chrome caps found on many British bikes; we also carry a two-inch size for oil tank caps. Monza-cap gaskets are made of rubber which is resistant to today's fuels. Sold individually.
Gas Cap Gaskets - $1.25
Replacement cork gaskets are suitable for the quarter-turn chrome caps found on many British bikes; we also carry a two-inch size for oil tank caps. Monza-cap gaskets are made of rubber which is resistant to today's fuels. Sold individually.
Motorcycle Model Any
Motorcycle Manufacturer AJS, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
   
Gas Cap Gaskets
Price $1.25
Description Replacement cork gaskets are suitable for the quarter-turn chrome caps found on many British bikes; we also carry a two-inch size for oil tank caps. Monza-cap gaskets are made of rubber which is resistant to today's fuels. Sold individually.
Motorcycle Model Any
Motorcycle Manufacturer AJS, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
Petcock Sealing Washer, 1/4 BSP
Alloy Dowty-type sealing washer with bonded-rubber inner seal. Fits 1/4 BSP fuel taps (1/2"i.d.). Sold individually.
Petcock Sealing Washer, 1/4 BSP - $1.75
Alloy Dowty-type sealing washer with bonded-rubber inner seal. Fits 1/4 BSP fuel taps (1/2"i.d.). Sold individually.
Motorcycle Model Any
Motorcycle Manufacturer AJS, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
   
Petcock Sealing Washer, 1/4 BSP
Price $1.75
Description Alloy Dowty-type sealing washer with bonded-rubber inner seal. Fits 1/4 BSP fuel taps (1/2"i.d.). Sold individually.
Motorcycle Model Any
Motorcycle Manufacturer AJS, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
 
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