C15


The BSA C15 was the first four-stroke unit-construction single produced by BSA. If you want to ride a four-stroke in Premier Lightweight, this is the go-to bike, with excellent performance and parts availability..

For general parts, please see the product indexon the left.

Parts available for C15
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Petcock, British, 1/8 or 1/4 BSP
Premium quality fuel tap, CNC-machined brass with nickel plating. Stainless steel filter gauze with internal anti-crush cage. Resistant to unleaded fuels with added ethanol content. Two thread sizes.
Petcock, British, 1/8 or 1/4 BSP - $25.00
Premium quality fuel tap, CNC-machined brass with nickel plating. Stainless steel filter gauze with internal anti-crush cage. Resistant to unleaded fuels with added ethanol content. Two thread sizes.
Motorcycle Model A10, A50, A65, Anglian, Any, B25, B40, B44, B50, C15, Challenger, G85, Gold Star, Griffon, Hawkstone/MCS, HT5, Metisse, Micro Metisse, MkIII, MkIV, Q.U.B., Scottish, Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
   
Petcock, British, 1/8 or 1/4 BSP
Price $25.00
Description Premium quality fuel tap, CNC-machined brass with nickel plating. Stainless steel filter gauze with internal anti-crush cage. Resistant to unleaded fuels with added ethanol content. Two thread sizes.
Motorcycle Model A10, A50, A65, Anglian, Any, B25, B40, B44, B50, C15, Challenger, G85, Gold Star, Griffon, Hawkstone/MCS, HT5, Metisse, Micro Metisse, MkIII, MkIV, Q.U.B., Scottish, Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, Greeves, Matchless, Rickman, Triumph
Primary Chain, Double-Row

High-quality primary chains made from Italian Regina material. Choose the one for your bike.

Primary Chain, Double-Row - $35.00

High-quality primary chains made from Italian Regina material. Choose the one for your bike.

Motorcycle Model B25, B40, B44, B50, C15, Challenger, Griffon, M.A.R., Metisse, Phantom, Q.U.B., Stiletto, Stormer, T100, T120, Tiger Cub, TR6
Motorcycle Manufacturer AJS, BSA, Cotton, Greeves, Maico, Ossa, Rickman, Triumph, Villiers
   
Primary Chain, Double-Row
Price $35.00
Description

High-quality primary chains made from Italian Regina material. Choose the one for your bike.

Motorcycle Model B25, B40, B44, B50, C15, Challenger, Griffon, M.A.R., Metisse, Phantom, Q.U.B., Stiletto, Stormer, T100, T120, Tiger Cub, TR6
Motorcycle Manufacturer AJS, BSA, Cotton, Greeves, Maico, Ossa, Rickman, Triumph, Villiers
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
Rims, Italian Chrome

Italian-made Radaellis are an economical choice for chrome rims. Chrome quality is not the very best, but quite acceptable. There are no external markings, and they are shaped like a Dunlop rim. Drilled to match your hub. The sizes and drill patterns listed are in stock; delivery on special-order items takes weeks. Please contact us if you don't see what you need.

Rims, Italian Chrome - $105.00

Italian-made Radaellis are an economical choice for chrome rims. Chrome quality is not the very best, but quite acceptable. There are no external markings, and they are shaped like a Dunlop rim. Drilled to match your hub. The sizes and drill patterns listed are in stock; delivery on special-order items takes weeks. Please contact us if you don't see what you need.

Motorcycle Model A10, A50, A65, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Gold Star, Griffon, Hawkstone/MCS, HT5, Metisse, Micro Metisse, MkIII, MkIV, Q.U.B., Scottish, Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, CZ, Greeves, Husqvarna, Matchless, Penton, Rickman, Triumph
   
Rims, Italian Chrome
Price $105.00
Description

Italian-made Radaellis are an economical choice for chrome rims. Chrome quality is not the very best, but quite acceptable. There are no external markings, and they are shaped like a Dunlop rim. Drilled to match your hub. The sizes and drill patterns listed are in stock; delivery on special-order items takes weeks. Please contact us if you don't see what you need.

Motorcycle Model A10, A50, A65, Anglian, Any, B25, B40, B44, B50, C15, Challenger, Gold Star, Griffon, Hawkstone/MCS, HT5, Metisse, Micro Metisse, MkIII, MkIV, Q.U.B., Scottish, Stormer, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Cotton, CZ, Greeves, Husqvarna, Matchless, Penton, Rickman, Triumph
Rubber Carb Cover, Amal Concentric

Seals dirt and water from entering your Concentric around the throttle cable and carb top.

Rubber Carb Cover, Amal Concentric - $14.00

Seals dirt and water from entering your Concentric around the throttle cable and carb top.

Motorcycle Model Alpina, Anglian, Any, B40, C15, Cota, HT5, M.A.R., Pursang, Sherpa T, Stormer, Tiger Cub
Motorcycle Manufacturer AJS, Ariel, BSA, Bultaco, Greeves, Montesa, Triumph
   
Rubber Carb Cover, Amal Concentric
Price $14.00
Description

Seals dirt and water from entering your Concentric around the throttle cable and carb top.

Motorcycle Model Alpina, Anglian, Any, B40, C15, Cota, HT5, M.A.R., Pursang, Sherpa T, Stormer, Tiger Cub
Motorcycle Manufacturer AJS, Ariel, BSA, Bultaco, Greeves, Montesa, Triumph
Seat, BSA B50MX
Seat, BSA B50MX - $289.00

Complete seat has a fiberglass replica of the B50MX base, topped with firm foam and an OE-style black vinyl cover. This seat works excellently on the earlier unit single BSA frames, and is also very popular when building specials.

Seat, BSA B50MX - $289.00

Complete seat has a fiberglass replica of the B50MX base, topped with firm foam and an OE-style black vinyl cover. This seat works excellently on the earlier unit single BSA frames, and is also very popular when building specials.

Motorcycle Model Any, B25, B40, B44, B50, C15
Motorcycle Manufacturer Any, BSA
   
Seat, BSA B50MX
Price $289.00
Description

Complete seat has a fiberglass replica of the B50MX base, topped with firm foam and an OE-style black vinyl cover. This seat works excellently on the earlier unit single BSA frames, and is also very popular when building specials.

Motorcycle Model Any, B25, B40, B44, B50, C15
Motorcycle Manufacturer Any, BSA
Service Manuals, Haynes, BSA or Triumph

The ultimate repair manual for your motorbike. Available for BSA or Triumph; Singles or Twins.

Service Manuals, Haynes, BSA or Triumph - $28.00

The ultimate repair manual for your motorbike. Available for BSA or Triumph; Singles or Twins.

Motorcycle Model A10, A50, A65, B25, B40, B44, B50, C15, Gold Star, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer BSA, Rickman, Triumph
   
Service Manuals, Haynes, BSA or Triumph
Price $28.00
Description

The ultimate repair manual for your motorbike. Available for BSA or Triumph; Singles or Twins.

Motorcycle Model A10, A50, A65, B25, B40, B44, B50, C15, Gold Star, T100, T120, T140, Tiger Cub, TR6
Motorcycle Manufacturer BSA, Rickman, Triumph
Shift Lever, BSA Unit Singles/Twins, Triumph Cub
Nice-quality, chrome-plated shift lever fits all BSA unit-construction singles and twins, and Triumph's Tiger Cub. Made in Taiwan.
Shift Lever, BSA Unit Singles/Twins, Triumph Cub - $27.00
Nice-quality, chrome-plated shift lever fits all BSA unit-construction singles and twins, and Triumph's Tiger Cub. Made in Taiwan.
Motorcycle Model A50, A65, B25, B40, B44, B50, C15, Tiger Cub
Motorcycle Manufacturer BSA, Triumph
   
Shift Lever, BSA Unit Singles/Twins, Triumph Cub
Price $27.00
Description Nice-quality, chrome-plated shift lever fits all BSA unit-construction singles and twins, and Triumph's Tiger Cub. Made in Taiwan.
Motorcycle Model A50, A65, B25, B40, B44, B50, C15, Tiger Cub
Motorcycle Manufacturer BSA, Triumph
Shocks, NJB MX Expert

The NJB MX Expert shocks have been extensively tested for years by top-level riders, thus providing spectacular performance and fade resistance, on a level with the most-expensive vintage MX shocks in the world. Available with a single-rate spring or a dual-rate spring set-up to suit all riders and price points. They are available in 13.0", 13.4", and 14.0"lengths. Priced as a pair, includes bushes and springs.

Shocks, NJB MX Expert - $245.00

The NJB MX Expert shocks have been extensively tested for years by top-level riders, thus providing spectacular performance and fade resistance, on a level with the most-expensive vintage MX shocks in the world. Available with a single-rate spring or a dual-rate spring set-up to suit all riders and price points. They are available in 13.0", 13.4", and 14.0"lengths. Priced as a pair, includes bushes and springs.

Motorcycle Model #18, #42, #48, #68, A10, A50, A65, Alpina, Any, B25, B40, B44, B50, C15, Challenger, CR125, CR250, G85, Gold Star, Griffon, Hawkstone/MCS, Matador, Metisse, Micro Metisse, MkIII, MkIV, MX250, Phantom, Pursang, Q.U.B., Stiletto, Stormer, T100, T120, T140, Tiger Cub, TM125, TR6, XL250, YZ400
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, CZ, Greeves, Honda, Husqvarna, Kawasaki, Maico, Matchless, Montesa, Ossa, Penton, Rickman, Suzuki, Triumph, Yamaha
   
Shocks, NJB MX Expert
Price $245.00
Description

The NJB MX Expert shocks have been extensively tested for years by top-level riders, thus providing spectacular performance and fade resistance, on a level with the most-expensive vintage MX shocks in the world. Available with a single-rate spring or a dual-rate spring set-up to suit all riders and price points. They are available in 13.0", 13.4", and 14.0"lengths. Priced as a pair, includes bushes and springs.

Motorcycle Model #18, #42, #48, #68, A10, A50, A65, Alpina, Any, B25, B40, B44, B50, C15, Challenger, CR125, CR250, G85, Gold Star, Griffon, Hawkstone/MCS, Matador, Metisse, Micro Metisse, MkIII, MkIV, MX250, Phantom, Pursang, Q.U.B., Stiletto, Stormer, T100, T120, T140, Tiger Cub, TM125, TR6, XL250, YZ400
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, CZ, Greeves, Honda, Husqvarna, Kawasaki, Maico, Matchless, Montesa, Ossa, Penton, Rickman, Suzuki, Triumph, Yamaha
Shocks, NJB MX Ultimate
NJB MX Ultimates pack a list of features like nothing else on the market. Speed-sensitive compression damping and performance-matched rebound provide the ultimate ride for classic motocross. Screw-type spring preload is quick and simple to use. A unique, two-piece body design allows the shock length to be adjusted from 13.4-15.1 inches (eye-to-eye), even while on the bike. This allows for fine-tuning the steering geometry or use on multiple machines. Can be mounted body-up or body-down. Spanners and a"fit kit"are included for fitment using 8, 10 or 12mm bolts. Your choice of 75lb or 90lb springs. Sold as a pair. Not for high-leverage-ratio applications.
Shocks, NJB MX Ultimate - $285.00
NJB MX Ultimates pack a list of features like nothing else on the market. Speed-sensitive compression damping and performance-matched rebound provide the ultimate ride for classic motocross. Screw-type spring preload is quick and simple to use. A unique, two-piece body design allows the shock length to be adjusted from 13.4-15.1 inches (eye-to-eye), even while on the bike. This allows for fine-tuning the steering geometry or use on multiple machines. Can be mounted body-up or body-down. Spanners and a"fit kit"are included for fitment using 8, 10 or 12mm bolts. Your choice of 75lb or 90lb springs. Sold as a pair. Not for high-leverage-ratio applications.
Motorcycle Model #18, #42, #48, #68, A10, A50, A65, Any, B25, B40, B44, B50, C15, CR125, CR250, G85, Gold Star, Griffon, Hawkstone/MCS, Metisse, Micro Metisse, MkIII, MkIV, MX250, Phantom, Pursang, Q.U.B., Stiletto, Stormer, T100, T120, T140, Tiger Cub, TM125, TR6, XL250
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, CZ, Greeves, Honda, Husqvarna, Kawasaki, Maico, Matchless, Montesa, Ossa, Penton, Rickman, Suzuki, Triumph, Yamaha
   
Shocks, NJB MX Ultimate
Price $285.00
Description NJB MX Ultimates pack a list of features like nothing else on the market. Speed-sensitive compression damping and performance-matched rebound provide the ultimate ride for classic motocross. Screw-type spring preload is quick and simple to use. A unique, two-piece body design allows the shock length to be adjusted from 13.4-15.1 inches (eye-to-eye), even while on the bike. This allows for fine-tuning the steering geometry or use on multiple machines. Can be mounted body-up or body-down. Spanners and a"fit kit"are included for fitment using 8, 10 or 12mm bolts. Your choice of 75lb or 90lb springs. Sold as a pair. Not for high-leverage-ratio applications.
Motorcycle Model #18, #42, #48, #68, A10, A50, A65, Any, B25, B40, B44, B50, C15, CR125, CR250, G85, Gold Star, Griffon, Hawkstone/MCS, Metisse, Micro Metisse, MkIII, MkIV, MX250, Phantom, Pursang, Q.U.B., Stiletto, Stormer, T100, T120, T140, Tiger Cub, TM125, TR6, XL250
Motorcycle Manufacturer AJS, Any, Ariel, BSA, Bultaco, Cotton, CZ, Greeves, Honda, Husqvarna, Kawasaki, Maico, Matchless, Montesa, Ossa, Penton, Rickman, Suzuki, Triumph, Yamaha