Shop Japanese-made KCM motorcycle chains for classic British motorcycle maintenance and restoration. The Bonneville Shop offers 530 non-O-ring final-drive chains for suitable Triumph, Norton, and BSA applications, plus duplex primary chains for selected Triumph 350, 500, and 650 models. Choose the correct chain size, link count, and construction for your motorcycle. Explore the products below, or learn about the manufacturer at KCM / Kaga Industries.
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Japanese-Made KCM Chains for Vintage British Motorcycles
KCM is the chain brand associated with Kaga Industries Co., Ltd., a Japanese manufacturer whose roller-chain production began in 1956. The company’s wider range includes roller chains and other power-transmission products for industrial applications.
At The Bonneville Shop, our KCM range focuses on replacement motorcycle chains: 530 final-drive chains and two-row duplex primary chains for selected vintage Triumph models. Our listings identify these products as Japanese-made, value-oriented replacement options for classic motorcycle owners.
Explore related Triumph chains and sprockets and Norton chains and sprockets, or browse our full range of classic British motorcycle parts. For additional brand background, visit the official KCM website and distributor information about KCM chains from Japan.
KCM 530 Final-Drive Chains
A motorcycle’s final-drive chain transfers power from the gearbox sprocket to the rear-wheel sprocket. The KCM final-drive chains offered here are conventional non-O-ring 530 chains, described in our catalog as 5/8 × 3/8-inch chains. They are intended for compatible non-O-ring applications, not as universal replacements for every Triumph, Norton, or BSA.
Our selection includes:
- KCM 530 × 110-link final-drive chain, PN 60-3297A. Supplied with a connecting link, this chain can be shortened for suitable even-length applications calling for 102, 104, 106, or 108 links.
- KCM 530 × 113-link final-drive chain, PN 60-3297 J. This listing identifies the chain as an option for odd-number-length applications and states that a connecting link is included.
Check your motorcycle’s specified chain size, required link count, sprocket combination, and available adjustment before ordering. A different gearbox or rear-wheel sprocket can change the required chain length, particularly on modified motorcycles. Our article about longer 530 chains and nonstandard sprocket combinations explains why replacement-chain length deserves attention.
For related components, browse Triumph chain and sprocket options or Norton chain and sprocket options. Use the appropriate Triumph workshop manual, Norton workshop manual, or BSA workshop manual for model-specific adjustment and installation procedures.
KCM Duplex Primary Chains for Triumph Motorcycles
The primary chain connects the engine sprocket to the clutch chainwheel. Unlike the final-drive chain, it operates within the motorcycle’s primary-drive assembly. The KCM primary chains offered on this page are endless duplex chains: they have two rows and are supplied as continuous loops.
Our Triumph KCM primary-chain options include:
- 78-link duplex primary chain, PN 60-0358 J / D358, listed for selected 1959–1974 Triumph 350 and 500 unit-construction models, including the 3TA, 5TA, T90, and T100 families.
- 84-link duplex primary chain, PN 60-0477J / D477J, listed for 1963–1972 Triumph 650 unit-construction 6T, TR6, and T120 models.
Match the chain to the model, year, primary-drive arrangement, and original part number. Link count alone does not establish compatibility: an 84-link duplex chain is not interchangeable with an 84-link triplex chain simply because both have 84 links. Our catalog separately lists triplex primary chains for Triumph T140 and TR7 models.
For installation information, consult our Triumph manuals and parts books. Owners of the earlier unit 650 twins can also refer to the 1963–1970 Triumph 650 factory workshop manual.
Choosing the Correct KCM Replacement Chain
Before ordering, identify these details:
- Chain location: primary drive or final drive.
- Chain specification: 530 final-drive chain or the correct primary-chain specification.
- Construction: non-O-ring final-drive chain, duplex primary chain, or another specified type.
- Link count: match the required length and any changes to the motorcycle’s gearing.
- Application: confirm the model, year, part number, and installed components.
Our books and manuals provide a useful starting point for identifying original parts and service procedures. Browse the relevant Triumph, Norton Commando, or BSA parts range when planning the rest of your maintenance project.
For additional manufacturer context, see KCM’s roller-chain information. Distributor resources such as Finer Power Transmissions’ KCM motorcycle-chain page and YUUA’s KCM brand overview provide further background; use our individual product listings and your motorcycle’s manual to determine the appropriate replacement.
Chain Maintenance and Workshop References
Regular inspection, cleaning, and appropriate lubrication help maintain the final-drive chain and sprockets. Our existing KCM guidance emphasizes monitoring both components and adjusting chain tension according to the factory workshop manual.
Primary-chain servicing requires access to the primary-drive assembly. Depending on the motorcycle, installing an endless primary chain can involve removing other primary-drive components. Follow the model-specific workshop procedure rather than applying one installation method to every motorcycle.
Prepare for the job with our workshop tools, specialty tools, and shop supplies. Keep the relevant Triumph service manual, Norton service manual, or BSA service manual available for adjustment specifications and assembly instructions.
Shop KCM Motorcycle Chains at The Bonneville Shop
Explore the KCM products above, compare other classic motorcycle supplier brands, or continue shopping our vintage British motorcycle parts catalog.
For help selecting a chain, call 720-570-7884 or text 720-260-4271 during our published business hours: Monday–Friday, 9 AM–5 PM Mountain Time. Have your motorcycle’s model, year, chain specification, and relevant part number ready when asking about an application.
KCM Motorcycle Chain FAQs
Who manufactures KCM chains?
KCM is the chain brand associated with Kaga Industries Co., Ltd., a Japanese manufacturer that began producing roller chains in 1956. Its broader business includes roller chains and other power-transmission products.
Are the KCM motorcycle chains sold by The Bonneville Shop made in Japan?
Our KCM brand page identifies the final-drive and duplex primary chains in this selection as Japanese-made. Check the individual listing and product packaging for the details of the specific chain you are purchasing. You can also read the distributor’s KCM Japan brand overview.
Which KCM chains does The Bonneville Shop carry?
The KCM page currently shows 110-link and 113-link 530 final-drive chains, a 78-link Triumph duplex primary chain, and an 84-link Triumph duplex primary chain. Consult each listing for current availability and application details.
What is the difference between a primary chain and a final-drive chain?
The primary chain connects the engine sprocket to the clutch chainwheel. The final-drive chain connects the gearbox output sprocket to the rear-wheel sprocket. They operate in different parts of the drivetrain and are not interchangeable. Refer to your model’s workshop manual or parts book to identify the correct chain.
Are these KCM 530 final-drive chains O-ring chains?
No. The KCM 530 final-drive chains described on this page are non-O-ring chains. Select them for applications that suit this construction, and do not assume a sealed chain is interchangeable without checking the motorcycle’s requirements and clearances. See the 110-link KCM listing and your model’s service documentation.
Should I choose the 110-link or 113-link KCM final-drive chain?
Choose according to the required chain length and your motorcycle’s sprocket setup. The 110-link chain is described as suitable for certain even-length applications and can be shortened to listed shorter lengths. The 113-link chain is listed for odd-number-length applications. Confirm the required length rather than choosing by motorcycle brand alone.
Which Triumph models use the KCM 78-link duplex primary chain?
The KCM 78-link duplex primary chain, PN 60-0358 J / D358, is listed for selected 1959–1974 Triumph 350 and 500 unit-construction models, including the 3TA, 5TA, T90, and T100 families. Confirm the exact application against your motorcycle’s parts book, especially if its engine or primary drive has been changed.
Which Triumph models use the KCM 84-link duplex primary chain?
The KCM 84-link duplex primary chain, PN 60-0477J / D477J, is listed for 1963–1972 Triumph 650 unit-construction models, including the 6T, TR6, and T120. It is not the same as the 84-link triplex chain listed for Triumph 750 T140 and TR7 applications.
What does “duplex primary chain” mean?
Duplex means the chain has two rows. The KCM duplex primary chains offered here are endless chains supplied as continuous loops. A triplex primary chain has three rows, so matching link count alone is not enough to select the correct replacement. Check the Triumph chain listings and the applicable Triumph manual.
How should I maintain and adjust a KCM motorcycle chain?
Inspect the chain and sprockets regularly, keep the final-drive chain clean and appropriately lubricated, and follow the motorcycle manufacturer’s adjustment procedure. Primary-chain and final-drive-chain settings are different, so use the relevant Triumph, Norton, or BSA workshop manual rather than applying a generic tension setting.