Drive Chains

Is the chain skipping over the teeth, or can you pull it away from the back of the rear sprocket? Then it's time for a new drive chain. We stock chains in 420, 428 and 520 for you who need to replace a worn chain or change the gearing on your project.

Size and length must match the sprockets

The drive chain transfers power from the front sprocket to the rear wheel and must fit both sprockets precisely. The designation shows the size: the first digit indicates the pitch and the last ones the width, so a 520 chain will not fit sprockets made for 428. The number after it, e.g. 114L or 108, is the number of links. If you change the gearing with different sprockets, a different length may be required. If you're replacing everything at once, a chain and sprocket kit can make the choice easier.

How to choose a drive chain

• Sealing: Chains with sealing rings, e.g. RK Chain GB520ZXW XW-Ring, keep the lubricant inside the links, which can extend service life. Non-sealed chains typically require more frequent lubrication.
• Load: Power and use determine how strong the chain needs to be. Some sizes are available in an H version such as 420H, which is typically a heavier-duty variant.
• Joining: The chain is closed with a master link or riveted. Master links are also available separately, e.g. BikeMaster 420H Chain Master Link. Always follow the manufacturer's instructions.
• Finish: Natural or gold primarily affects the appearance. Any additional corrosion protection depends on the specific chain.

In this category you'll find, among others, RK Chain, Renthal, BikeMaster, TwinPower and QuadBoss.

Maintenance extends service life

Clean and lubricate the chain regularly, especially after riding in wet weather or dirt. Check the chain tension against the vehicle's specifications, as both an overly tight and an overly slack chain can increase wear on the chain, sprockets and bearings.

Frequently asked questions

Should I replace the sprockets when I replace the chain?

It is typically recommended. Worn sprockets with pointed or bent teeth can quickly wear out a new chain, and a worn chain does the same to new sprockets. That's why they are often replaced together.

How do I find the right number of links?

Count the links on the old chain, or check the vehicle's specifications. If you change the number of teeth on the sprockets, more or fewer links may be required. Many chains can be shortened to the desired length with a chain tool.

How tight should a drive chain be?

It depends on the vehicle. The manufacturer typically specifies a value for chain slack, measured midway between the sprockets. Check it at several points along the chain, as wear can be uneven.