Shop Renold primary chains for classic Triumph motorcycles and BSA motorcycles at The Bonneville Shop. Our selection includes 78-link and 84-link duplex chains for listed Triumph applications, an 84-link triplex chain for Triumph T140/TR7 models, and an 80-link triplex chain for listed BSA A50/A65/A70 applications. Match the chain to your motorcycle’s model, year, primary-drive configuration and original part number.
Renold has a long connection with motorcycle chain manufacture. Its official motorcycle-chain history traces that relationship to Phelon & Moore’s approach to Hans Renold in 1900 and describes the company’s continuing support for classic motorcycles. Browse the chains below, or explore our Triumph clutch and primary parts and BSA clutch and primary parts for related components.
Table of Contents
Choosing the Correct Renold Primary Chain
A Renold primary chain should be selected by application and specification—not by brand name or link count alone. Your motorcycle’s parts book, the original chain number and the primary-drive equipment actually fitted are the best starting points.
The current Renold collection contains four application-specific chains:
| Listed application | Chain configuration | Listed years | Part-number reference |
| Triumph 350/500 T100, Daytona and Trophy applications | 78-link duplex | 1959–1974 | 60-0358 E / D358 E |
| Triumph 650 Bonneville, Tiger and Trophy applications | 84-link duplex | 1963–1972 | 60-0477E / D477E |
| Triumph 750 T140/TR7 | 84-link triplex | 1973–1982 | 60-4125 UK |
| BSA A50/A65/A70 | 80-link triplex | 1964–1973 | 19-8639 |
These year ranges reproduce the current product-grid titles. They are not a claim that every model or production variant within each range uses the same chain. Check the individual listing and the motorcycle’s parts book before ordering.
For identification resources, browse our Triumph parts books and BSA parts books.
What Does a Primary Chain Do?
The primary chain connects the engine sprocket to the clutch chainwheel sprocket. It is part of the primary drive, not the rear-wheel final drive. Your Renold product descriptions identify this engine-to-clutch function.
When planning a primary-drive repair, consider the chain alongside the related clutch, sprocket and adjustment components. Explore our Triumph clutch and primary collection or BSA clutch and primary collection for the wider assembly.
Duplex and Triplex Renold Chains
Duplex and triplex describe the number of parallel chain rows: duplex has two, while triplex has three. Your Renold selection includes both constructions, and Renold’s classic motorcycle information identifies simplex, duplex and triplex chain families.
An 84-link duplex chain and an 84-link triplex chain are not interchangeable simply because their link counts match. The chain must match the corresponding primary-drive sprockets and application.
For example, the Triumph 650 listing uses an 84-link duplex chain, while the Triumph 750 T140/TR7 listing uses an 84-link triplex chain.
Explore our Triumph chains and sprockets and BSA chains and sprockets when comparing related drive components.
Renold Primary Chains for Classic Triumph Motorcycles
Our Triumph Renold selection covers three distinct primary-chain configurations: 78-link duplex, 84-link duplex and 84-link triplex. The product listings distinguish smaller Triumph twin applications, 650cc models and 750cc T140/TR7 models.
Start with the original part number, then confirm the model, year and chain construction. If your motorcycle has received a replacement engine, clutch or primary-drive conversion, do not rely exclusively on the frame’s model year.
Useful supporting collections include:
- Vintage Triumph parts.
- Triumph clutch and primary parts.
- Triumph chains and sprockets.
- Triumph workshop manuals.
- Triumph parts books.
Renold Primary Chains for BSA Twins
The BSA chain currently displayed is an 80-link triplex primary chain listed for A50, A65 and A70 applications under part number 19-8639. Its product title identifies it as UK-made. Confirm the individual application before ordering rather than treating it as a replacement for every BSA primary drive.
For related components and identification information, browse:
- BSA motorcycle parts.
- BSA clutch and primary parts.
- BSA chains and sprockets.
- BSA workshop manuals.
- BSA parts books.
Renold’s Motorcycle-Chain Heritage
Renold’s motorcycle connection began in 1900 when Phelon & Moore sought a stronger power-transmission solution from Hans Renold. The company’s history describes its involvement in motorcycle racing and its later decision to continue supporting existing motorcycles after reducing new motorcycle-chain development during the 1980s.
Renold also describes a renewed classic motorcycle chain range introduced in 2020 using updated metallurgy, heat treatment and manufacturing processes. This provides useful brand context, but it should not be treated as a specification sheet for every chain sold by The Bonneville Shop.
Read the Renold motorcycle-chain history for the manufacturer’s account.
Primary-Chain Lubrication and Maintenance
Correct lubrication is important to chain life. Renold explains that lubricant must reach the working bearing surfaces rather than merely coat the exterior. Its technical guidance also distinguishes initial protective lubrication from the lubrication required in service.renold
For a motorcycle primary drive, follow the applicable workshop manual for lubricant specification, quantity, adjustment procedure and inspection intervals. Do not substitute a generic industrial-chain recommendation for a motorcycle-specific requirement.
Supporting references include:
- Renold lubrication advice.
- Renold explanation of chain lubrication methods.
- Renold roller-chain designer guide.
- Triumph workshop manuals.
- BSA workshop manuals.
Renold’s general engineering references explain chain principles; they do not replace your model’s service instructions.
Looking for Norton Chains or Other Chain Brands?
The current Renold grid contains Triumph and BSA primary chains. For Norton drive components, browse our Norton chains and sprockets and Norton clutch and primary parts. These are broader collections, not a statement that a Renold Norton chain is currently listed here.
You can also explore our supplier brands for other replacement-parts manufacturers.
For help narrowing down a chain, contact orders@thebonnevilleshop.com or call 720-570-7884. Include the motorcycle model, year, original chain number and details of any primary-drive modifications.
Renold FAQ
What Renold chains does The Bonneville Shop sell?
Our current Renold collection contains four primary chains: a 78-link duplex Triumph chain, an 84-link duplex Triumph chain, an 84-link triplex Triumph T140/TR7 chain and an 80-link triplex BSA A50/A65/A70 chain. Check the product grid for the current selection
What is a motorcycle primary chain?
A primary chain transfers drive from the engine sprocket to the clutch chainwheel sprocket. It is different from the final-drive chain that drives the rear wheel. Our Renold listings are primary-drive products.
What is the difference between duplex and triplex chains?
Compare the original part number, motorcycle model and year, link count and chain construction. Use the individual listing together with the correct Triumph parts book or BSA parts book. Check the equipment actually fitted if the primary drive has been modified.
Which Renold chain is listed for Triumph 350 and 500 models?
The current listing identifies a 78-link duplex chain for specified Triumph 350/500 T100, Daytona and Trophy applications from 1959–1974, under part-number references 60-0358 E and D358 E. Confirm the exact application in the product description and parts.
Which Renold chain is listed for Triumph 650 models?
The current Triumph 650 listing is an 84-link duplex chain under references 60-0477E and D477E. Its description identifies Triumph 6T, TR6 and T120 unit-construction applications, while the grid title gives a 1963–1972 range. Check your specific model before ordering.
Which Renold chain is listed for Triumph T140 and TR7 models?
The collection lists an 84-link triplex primary chain for Triumph 750 T140/TR7 models, under part number 60-4125 UK. The current grid title gives 1973–1982; confirm production-year compatibility in the individual listing and parts book.
Which Renold chain is listed for BSA A50, A65 and A70 motorcycles?
The current BSA listing is an 80-link triplex primary chain under part number 19-8639, with a listed 1964–1973 application range. It should not be assumed to fit other BSA models or a modified primary drive.
Are these Renold primary chains UK-made?
The current Triumph 750 and BSA product titles explicitly identify those chains as UK-made, and the Triumph 650 description states that its chain is manufactured in the UK. Check each individual listing for its stated origin rather than extending one product’s claim to all Renold products.
Does The Bonneville Shop currently list a Renold chain for Norton?
No Norton chain appears in the current four-product Renold grid. For other available options, browse our Norton chains and sprockets or Norton clutch and primary collection.
Does a new Renold primary chain still need correct lubrication?
Yes. Renold explains that the protective and initial lubricant on a new chain does not remove the need for appropriate lubrication in service. Follow your motorcycle’s workshop manual for the primary-drive lubricant and maintenance requirements. See Renold’s lubrication advice for the underlying chain principles.
Where can I find primary-chain adjustment instructions?
Use the workshop manual for your exact motorcycle. Browse our Triumph manuals and BSA manuals. Avoid applying one model’s chain-adjustment specification to every Triumph or BSA application.