The Bonneville Shop supplies new replacement parts for the Norton Commando, built from 1968 to 1977. That covers the 750 Fastback, Roadster, Hi-Rider and Interstate; the 850 Mk1, Mk2 and electric-start Mk3; and selected Atlas and earlier Norton twins. Shop by system below: engine, electrical, carburetor and fuel, brakes, Isolastics and suspension and more. Orders ship free to the lower 48 states, and orders placed by noon Mountain Time on weekdays ship the same day.
Table of Contents
Shop Norton Commando Parts by Category
Find the right part faster by starting with the system you’re working on.
Engine and drivetrain
- Norton Engine Parts: pistons, rings, valves, cam and timing-side parts, bearings and top-end parts
- Norton Gaskets and Seals: top-end and complete gasket sets and oil seals
- Norton Clutch and Primary: diaphragm-spring clutch parts, primary chains and chaincase parts
- Norton Transmission and Gearbox: gears, shafts, bearings and gearchange parts
- Norton Chains and Sprockets: final-drive chains and gearbox and rear sprockets
- Norton Oil and Air: oil filters, air filters, airbox rubbers and oil lines
- Norton Exhausts: header pipes, silencers, balance pipes and locking washers
Fuel and electrical
- Norton Carburetor and Fuel: Amal Concentric parts, manifolds, petrol taps and fuel lines
- Complete Carburetors: ready-to-fit carburetors
- Norton Electrical: electronic ignition, charging, switches, lighting and wiring
- Norton Instruments: speedometers, tachometers, drives and cables
Chassis and running gear
- Norton Suspension, Forks and Shocks: Isolastic kits, fork parts, gaiters and rear shocks
- Norton Brakes: drum shoes, disc rotors, calipers, master cylinders and seal kits
- Norton Frame, Body and Trim: frame fittings, side panels, stands and trim
- Norton Wheels and Tires, Wheel Rims, Spoke Sets and Tires
- Norton Handlebars and Controls: bars, levers, grips, mirrors and switch gear
- Norton Cables: throttle, clutch, brake and instrument cables
Bodywork and finishing
- Norton Tanks and Badges: fuel tanks, badges and fittings
- Norton Fenders and Mudguards: front and rear mudguards and stays
- Norton Seats, including our Norton cafe racer seat guide
- Norton Decals: tank, panel and side-cover decals
- Norton Rubber Parts: footrest rubbers, grommets, cush-drive rubbers and mounts
- Norton Hardware: bolts, studs, nuts and washers in the correct thread forms
Tools and documentation
- Norton Service Tools: pullers, holding tools and timing tools
- Norton Parts Books: factory part numbers and exploded diagrams
- Norton Manuals: workshop and rider’s manuals
- See also our workshop tools, suspension tools, wheel and brake tools, shop supplies and clearance
Shop by Commando Model and Year
Commando parts changed with engine size, model and year, so knowing your bike’s version narrows your search quickly.
| Version | Years | Models | Key changes | Parts book |
| 750 early | 1968–1970 | Fastback, R, S, Roadster, Production Racer | 745cc Atlas-based twin in Isolastic frame; production began March 1968 (Wikipedia) | 06-3065 (1968–70) |
| 750 later | 1971–1973 | Fastback, Fastback LR, Roadster, Hi-Rider, SS, Interstate | Interstate and Combat engine from January 1972; front disc from 1972 (Wikipedia) | 06-8200 (1971), 06-3402 (1972) |
| 850 Mk1 / Mk1A | 1973–1974 | Roadster, Interstate, Hi-Rider, Interpol | 828cc engine with strengthened bottom end, front disc brake (Wikipedia) | 06-5034 (750/850) |
| 850 Mk2 / Mk2A | 1974 | Roadster, Interstate, Hi-Rider, Interpol | Mk2A versions with quieter exhaust and larger airbox for European noise rules (Wikipedia) | 06-5034 (750/850) |
| 850 Mk3 | 1975–1977 | Roadster, Interstate | Electric start, left-foot gearchange, rear disc brake and adjustable Isolastics (Wikipedia; Rider Magazine) | 00-5756 (850 Mk3) |
Parts book numbers match the books listed in our Norton parts books category and in Andover Norton’s publications list.
Riding a Triumph or BSA too? See our vintage Triumph parts and BSA motorcycle parts hubs.
Shop by Brand
We stock factory, British-made, original-specification and quality reproduction Commando parts from established suppliers, including:
- Factory spares: Andover Norton, holder of the original Norton works drawings and tooling (Andover Norton)
- Carburetors and fuel: Amal
- Electrical and ignition: Lucas, Boyer Bransden, Tri-Spark, Podtronics, Sparx, Electrex World, British Wiring, Champion
- Engine: G&S Valves, Kibblewhite, Hepolite
- Brakes and suspension: Girling, Hagon, Ferodo
- Cables and controls: Venhill, Doherty, Barnett
- Chains: Renold, D.I.D
- Wheels and tires: Central Wheel Components, Excel, Dunlop
- General spares: Wassell, Emgo
Browse all brands.
A Short History of the Norton Commando
Norton-Villiers chairman Dennis Poore needed a new flagship to replace the 750 Atlas. In early 1967 he hired Dr. Stefan Bauer, a former Rolls-Royce engineer, to lead a team with engineers Bernard Hooper and Bob Trigg (Motorcycle Classics). With just three months to go before the show, the team hung a rubber-mounted Atlas engine in an all-new frame built around a single large top tube. The Commando debuted at the 1967 Earls Court Show (Norton Owners Club).
The key to the design was the patented Isolastic system. The engine, gearbox, swinging arm and rear wheel are mounted together and isolated from the main frame by rubber bushes, which keeps most of the parallel twin’s vibration away from the rider (Norton Owners Club; Wikipedia). The Commando won Motor Cycle News “Machine of the Year” five years running, from 1968 to 1972 (Wikipedia).
Assembly moved from Plumstead, London, to Andover, Hampshire, with engines and gearboxes built in Wolverhampton (Norton Owners Club). The 850 arrived in 1973, and the electric-start Mk3 in 1975. The last Commandos were completed in 1977, after about 60,000 had been built (Wikipedia). Andover Norton was set up in 1977 to take over the Norton Villiers Triumph spares stock, and it still makes parts from the original works drawings (Andover Norton). Further reading: the Norton-Villiers and Norton Villiers Triumph company histories, the Norton Atlas that supplied the Commando’s engine, the North Texas Norton Owners history of the P10 and Isolastic frame, Motorcycle Classics on the John Player Norton Commando, and Andover Norton’s company profile. The Access Norton owners’ forum is a popular place for Commando technical discussion. Read more in our blog post 60,000 Commandos Can’t Be Wrong and in Matchless, AJS and Associated Motor Cycles.
How to Order the Correct Commando Part
- Find your engine and frame numbers. Early Commandos have matching engine and frame numbers. Machines after engine number 307311 have frame numbers starting at F100000, and the 1975 Mk3 850 engines start at 325001 (Norvil).
- Identify the model and Mk. The Fastback, Roadster, Interstate and Hi-Rider use different tanks, seats, exhausts and controls. The 850 Mk3 changed the gearchange, brakes and Isolastics.
- Use the parts book for your year. Factory part numbers end the guesswork. See why the parts catalog is your most important tool and shop Norton parts books.
- Check for earlier modifications. Many Commandos have been updated over the decades with later brakes, ignition or engines. Read Pattern Parts and Fettling to Perfection before fitting reproduction parts.
- Ask us. Contact our team with your model, year, and engine and frame numbers.
For club support and historical records, see the International Norton Owners Association (US and Canada), the Norton Owners Club (UK) and the Vintage Motor Cycle Club library, which holds a large share of the surviving British factory records (Norvil).
Commando Tech Library
Written by our technical support team, Dave Porter and Mike Grage.
A Guide to British Motorcycle Basket Case Projects
A Guide to Motorcycle Basket Case Dave Porter, Technical and Customer Support at The Bonneville Shop The opportunity to acquire a…
Wheel Building – Starting For Success
Dave Porter, Technical and Customer Support at The Bonneville Shop. Motorcycle Wheel Building One of the more satisfying elements of the…
60,000 Commandos Can’t Be Wrong- Musings From A Casual Blogger
By Dave Porter, Technical and Customer Support at The Bonneville Shop I have always admired the Norton Commando series of motorcycles, not…
Matchless AJS and Associated Motor Cycles
By Dave Porter, Technical and Customer Support at The Bonneville Shop AMC Looking back on some of the more revered names…
A Word About BSA, Norton, and Triumph Seat Supply
By Dave Porter, Technical and Customer Support at The Bonneville Shop If you have been searching for seat supply for…
Norton Motorcycle Photos
Norton motorcycle photos from our customers here at The Bonneville Shop. Check out or stock of parts for your Norton….
Norton history and projects
- 60,000 Commandos Can’t Be Wrong
- Matchless, AJS and Associated Motor Cycles
- Norton Motorcycle Photos from Our Customers
- A Guide to British Motorcycle Basket Case Projects
- A Word About BSA, Norton and Triumph Seat Supply
Carburetors and ignition
- Understanding the Choke on Amal Concentric MK1 Carburetors
- Amal Carb Fitment: An Everyman’s Guide
- A Look at the Amal Concentric Floats
- Setting Up Dual Carbs
- Timing Tri-Spark Ignition on Classic Twins
- Electronic Ignition System Diagnostics
Electrical
- Video: About Solid-State Regulators
- A Look at the Lucas 149SA and 47SA Ignition Switches
- Fitting the Lucas 36403 Ammeter
- The Lucas Cutout and Kill Switches
- Using LEDs with Traditional Turn Signal and High Beam Indicators
- An Overview of the Smiths BG5330 Speedometer Drive
Chassis, wheels and controls
- Wheel Building: Starting for Success
- Lacing a Cross 3 Pattern Rear Disc Wheel
- Tips on Fitting a Girling Stainless Floating Brake Disc
- A Brief Guide to Cables
- Considerations for Handlebar Changes
- How to Install New Clutch Rubbers
Restoration and care
- The Case for the Parts Catalog
- Pattern Parts and Fettling to Perfection
- The Nuts and Bolts of Hardware
- Video: Polishing Primary and Timing Covers
- Application Techniques for Waterslide Decals
- Winterizing Your Classic Brit Bike Checklist
Browse all Norton tech articles or the full Tech Blog, or watch our videos on The Bonneville Shop YouTube channel.
Why Buy Norton Commando Parts from The Bonneville Shop
- Keeping British bikes on the road since 2008. The Bonneville Shop was founded in Ventura, California, in 2008 by British ex-pat Roger Tedds (About Us).
- Experienced technical support. Dave Porter and Mike Grage have more than 60 years of combined experience with classic British motorcycles (About Us).
- Free shipping to the lower 48 states, with no minimum order. Standard orders ship by USPS, and expedited shipping is available (Shipping and Returns).
- Same-day shipping for orders received Monday to Friday before noon Mountain Time (Shipping and Returns).
- International orders. Email your parts list and address to orders@thebonnevilleshop.com for a shipping quote.
- 30-day returns on most products. Bearings, service tools, electrical items and clearance “2nd’s” are not returnable (Shipping and Returns).
- Rewards on every order through Frequent Spanner Points.
Norton Commando Parts FAQ
Which Norton Commando models do you sell parts for?
We sell parts for Norton Commandos built from 1968 to 1977. That covers the 750 Fastback, R, S, Roadster, Hi-Rider, SS, Interstate and Production Racer; the 850 Mk1, Mk1A, Mk2 and Mk2A; and the electric-start 850 Mk3 Roadster and Interstate. We also carry selected parts for the Atlas and earlier Norton twins.
What is the difference between the Norton Commando 750 and 850?
The 750 uses a 745cc engine with a 73mm bore and 89mm stroke. The 850, introduced for 1973, uses an 828cc engine with a 77mm bore and a strengthened bottom end. The 850 became the only engine from late 1973, and all 850s have a front disc brake (Wikipedia).
What are Norton Isolastics?
Isolastics are the Commando’s patented rubber-mounting system. The engine, gearbox, swinging arm and rear wheel are mounted together and isolated from the frame by rubber bushes, which keeps most engine vibration away from the rider. The mountings need correct end-float to keep the bike handling well. Earlier models are set with shims, while the Mk3 has adjustable Isolastics.
What changed on the Norton Commando 850 Mk3?
The 1975 850 Mk3 added an electric starter, a left-foot gearchange and right-foot brake to meet US regulations, a rear disc brake, an Isolastic head steady and adjustable Isolastics. The range was reduced to the Mk3 Roadster and Interstate, and production ended in October 1977 (Wikipedia).
What is the Norton Commando Combat engine?
The Combat engine was a higher-performance 750 introduced in January 1972. It had 10:1 compression, an SS camshaft and 32mm carburetors, and produced a claimed 65 bhp. It was stamped with a “C” on top of the engine and became known for main-bearing and piston failures (Wikipedia).
How do I identify my Norton Commando’s year?
Start with the engine and frame numbers. Early Commandos have matching numbers. Machines after engine number 307311 have frame numbers starting at F100000, and the 1975 Mk3 850 engines start at 325001 (Norvil). Then confirm details such as the brakes, gearchange side and exhaust against the parts book for your year.
Which Norton Commando parts book do I need?
Use the book for your bike’s year. Common factory parts books are 06-3065 for 1968–70, 06-8200 for 1971, 06-3402 for 1972, 06-5034 for 750 and 850 models of 1973–74, and 00-5756 for the 850 Mk3. All are available in our Norton parts books category.
What is Andover Norton?
Andover Norton was founded in 1977 to take over the Norton Villiers Triumph spares stock. It holds the original Norton works drawings and tooling, and it makes Commando and Dominator parts to original or improved specification (Andover Norton). We stock Andover Norton parts.
Do you sell electronic ignition for the Norton Commando?
Yes. We stock electronic ignition systems from Tri-Spark and Boyer Bransden, along with charging and wiring parts in our Norton electrical category.
Do you offer free shipping on Norton parts?
Yes. Orders ship free to the lower 48 US states, with no minimum order. Orders received Monday to Friday before noon Mountain Time ship the same day, and later orders ship the next business day. Expedited shipping is available for an extra charge.
Do you ship Norton parts internationally?
Yes. If an international shipping quote looks high, email your parts list and shipping address to orders@thebonnevilleshop.com, and we will check the shipping cost for you.
What is your return policy?
Most products can be returned within 30 days of delivery. Bearings, service tools, electrical items and clearance “2nd’s” products are not returnable. Full details are on our Shipping and Returns page.
Can I get help choosing the right Commando part?
Yes. Call 720-570-7884 or text 720-260-4271, Monday to Friday, 9 a.m. to 5 p.m. Mountain Time. You can also email orders@thebonnevilleshop.com. Please include your model, year, and engine and frame numbers.
Can I pick up parts in Cheyenne?
Yes. Orders can be picked up at 190 S College Dr., Unit C, Cheyenne, Wyoming 82007. This is a pickup location only, not a retail store open to the public.