Shop All Classic Triumph, Norton & BSA Parts

Shop by Make

• Vintage Triumph parts: covers the pre-unit and unit 350, 500 and 650 twins, the 750 T140 Bonneville and TR7 Tiger, and the T150 and T160 Trident triples. Start with our Triumph 650 parts diagram.
• Norton Commando parts: for the 750 and 850 Commando from 1968 to 1975. Read About the Norton Commando.
• BSA motorcycle parts: for the A50 and A65 unit twins, A75 Rocket 3, B-series and C-series singles, and pre-unit models. Read Thunderbolt and Lightning: BSA's unit twins.

Not sure which part you need? Use our year, make and model finder.

Shop by System

System	Triumph	Norton	BSA
Brakes	Triumph brakes	Norton brakes	BSA brakes
Cables	Triumph cables	Norton cables	BSA cables
Carburetors	Triumph carburetors	Norton carburetors	BSA carburetors
Chains and sprockets	Triumph chains and sprockets	Norton chains and sprockets	BSA chains and sprockets
Clutch and primary	Triumph clutch and primary	Norton clutch and primary	BSA clutch
Decals	Triumph decals	Norton decals	BSA decals
Electrical	Triumph electrical	Norton electrical	BSA electrical
Engine	Triumph engine	Norton engine	BSA engine
Exhaust	Triumph exhaust	Norton exhaust	BSA exhaust
Fenders	Triumph fenders	Norton fenders	BSA fenders
Frame	Triumph frame	Norton frame	BSA frame
Gaskets	Triumph gaskets	Norton gaskets	BSA gaskets
Handlebars and controls	Triumph handlebars and controls	Norton handlebars and controls	BSA handlebars
Hardware	Triumph hardware	Norton hardware	BSA hardware
Instruments	Triumph instruments	Norton instruments	BSA instruments
Manuals	Triumph manuals	Norton manuals	BSA manuals
Oil and air	Triumph oil and air	Norton oil and air	BSA oil and air
Parts books	Triumph parts books	Norton parts books	BSA parts books
Rubber parts	Triumph rubber	Norton rubber	BSA rubber spares
Seats	Triumph seats	Norton seats	BSA seats
Service tools	Triumph service tools	Norton tools	BSA service tools
Spoke sets	Triumph spoke sets	Norton spoke sets	BSA spoke sets
Suspension and forks	Triumph suspension and forks	Norton suspension and forks	BSA suspension and forks
Tanks	Triumph tanks	Norton tanks	BSA tanks
Tires	Triumph tires	Norton tires	BSA tires
Transmission	Triumph transmission	Norton transmission	BSA transmission
Wheels	Triumph wheels and tires	Norton wheels and tires	BSA wheels
Wheel rims	Triumph wheel rims	Norton wheel rims	BSA wheel rims

Shop by Brand

We stock both original-equipment and modern replacement brands. For example:

• Suspension: Girling and Hagon shocks.
• Engine internals: Hepolite pistons, Grant piston rings, G&S valves and Kibblewhite valve-train parts.
• Carburetors: Amal.
• Electrical:
  • Classic: Lucas parts and British Wiring harnesses.
  • Modern upgrades: Tri-Spark, Boyer Bransden, Podtronics, Electrex World and Sparx.

More brands:

• Original-pattern parts: Andover Norton, Wassell, L.F. Harris and Emgo.
• Clutches, chains and sprockets: Barnett, Renold and D.I.D.
• Cables and controls: Venhill and Doherty.
• Brakes and spark plugs: Ferodo and Champion.
• Wheels and tires: Central Wheel Components, Excel and Devon rims, and Dunlop tires.
• Seats and seat parts: Seat Supply and Aerco.

See every brand we carry.

Tools, Supplies and Accessories

• Tools: workshop tools, engine tools, specialty tools, suspension tools and wheel and brake tools.
• Supplies and accessories: shop supplies, accessories, motorcycle seat covers and books and manuals.
• Deals: new products, sale items and clearance.

How to Find the Right Part

1. Identify your bike. Note the year, model and engine and frame numbers. Many British parts changed mid-year, at an engine number, not at the model year.
2. Check the parts book. Original part numbers, such as 70-, 71- or 06-, are the most reliable match. Read The Case for the Parts Catalog.
3. Match the threads. British bikes use Whitworth, BSF and cycle (CEI) threads. See The Nuts and Bolts of Hardware and the Whitworth thread standard.
4. Ask us. Contact our tech team by phone at 720-570-7884, by text at 720-260-4271, or by email.

Guides From Our Tech Blog

Browse the tech blog, or start with these:

• Engine: Triumph T100 Top End, Triumph Top End Sealing and Eliminating Triumph Oil Leaks.
• Carburetors: Setting Up Dual Carbs and Amal Concentric Carb Fitment.
• Electrical: Converting to 12 Volts, Timing a Tri-Spark Ignition and Electronic Ignition Diagnostics.
• Wheels: Motorcycle Wheel Building.
• Cables: Guide to Throttle, Clutch and Brake Cables.
• Projects and care: Buying a Basket Case and Winterizing Your Classic Brit Bike.
• By make: Norton tech articles and BSA tech articles.

The British Motorcycles We Support

• Triumph: Triumph Engineering built the bikes most of our parts serve. That includes the Bonneville, introduced in 1959, and the Trident and Rocket 3 triples. It also includes the later 750 twins built by the Meriden Motorcycle Co-operative.
• Norton: we support the Norton Commando built by Norton and later Norton-Villiers-Triumph.
• BSA: we support the BSA range, including the A50 and A65 unit twins.

Most of these bikes left the factory with Lucas electrics and Amal carburetors. Many owners later built them into café racers.

Clubs, Racing and Museums

These clubs, racing groups and museums are good places to find other owners, history and events:

• Vintage Motor Cycle Club (UK)
• Triumph Owners Motorcycle Club
• BSA Owners Club
• Antique Motorcycle Club of America
• AHRMA for vintage racing
• Barber Vintage Motorsports Museum
• National Motorcycle Museum (UK)

Why Shop With The Bonneville Shop

• History: Roger Tedds founded The Bonneville Shop in Ventura, California, in 2008. We now ship from Cheyenne, Wyoming (About us).
• Shipping: orders ship free to the lower 48 states, and weekday orders placed before noon Mountain Time ship the same day (Shipping and Returns).
• Returns: you have 30 days to return most items. Bearings, tools, electrical parts and 2nd's are excluded.
• Rewards: every order earns Frequent Spanner Points.
• Videos: how-to videos are on our YouTube channel.
• Local pickup: pickup is available at 190 S College Dr., Unit C, Cheyenne, WY 82007. This is not a retail showroom.

Frequently Asked Questions