Chain/Sprocket kits
A worn chain doesn't fail on its own. By the time you notice slack or a rattling sound, the sprockets have usually worn down with it, which is why replacing all three together as a chain and sprocket kit is the safer call rather than swapping the chain alone. A matched kit keeps the pitch and tooth profile consistent across the chain and both sprockets, so power reaches the rear wheel the way it's supposed to, without the extra wear that comes from pairing an old sprocket with a new chain. Search by your bike model below and you'll get a kit that's built to fit, not just close enough.
- Matched, not mismatched: Chain and sprockets sold together so pitch and tooth count line up correctly.
- Search by your bike: Filter by model to find the exact chain sprocket kit for what you ride, from a Pulsar to a Royal Enfield Classic 350.
- Fitment details upfront: Tooth count, chain length and pitch listed on every product page, no guesswork.
- OEM and performance options: Stock replacement kits alongside gearing options if you want to adjust acceleration or top speed.
Why Buy a Kit Instead of Replacing Parts Separately
A chain stretches and sprocket teeth wear into a hooked shape at roughly the same rate, since they're doing the same job every time you ride. Replace only the chain and it'll grind against the worn teeth of an old sprocket, undoing most of the benefit of the new chain within a few thousand kilometers. Buying a matched kit avoids that mismatch entirely and is usually cheaper than replacing all three parts at different times as they fail one after another. Once your new kit is fitted, regular lubrication is what determines how long it lasts. Our chain lubrication guide covers how often to oil it and what to avoid.
How to Choose the Right Chain Sprocket Kit
Start with your bike model rather than the chain itself. Every kit on this page is filtered by make and model, so the fitment, tooth count and chain length are already worked out for you. If you're chasing a specific outcome, like more acceleration off the line, going up a tooth or two on the rear sprocket helps, though it comes at the cost of a slightly lower top speed. If you're simply doing a routine replacement, matching the stock tooth count is the safer, simpler choice. Chain type matters too: O-ring and X-ring chains hold lubrication longer and need less maintenance than standard chains, which is worth the small price difference if you ride often. If you want to understand how tooth count, pitch, and gearing actually work together before making a change, our sprockets guide breaks it down in more depth.
Signs You Need a New Chain and Sprocket Kit
- Visible slack in the chain even after adjusting the tensioner
- Sprocket teeth that look hooked or shark-finned instead of straight
- A chain that looks rusty, dry, or has stiff links that don't flex smoothly
- Noticeable noise or a jerky feel when you open the throttle
- Chain that's stretched enough to need frequent tightening every few hundred kilometers
FAQs
Q: What's included in a chain and sprocket kit?
A: A complete kit includes the drive chain, the front (countershaft) sprocket, and the rear wheel sprocket, sized to match each other and your specific bike model. Some kits also include a master link for installation.
Q: How much does a Royal Enfield Classic 350 chain sprocket kit cost?
A: Pricing depends on the chain type and finish you choose. A standard non O-ring kit for the Classic 350 typically costs less than an O-ring or brass finish kit, since those hold lubrication longer and need less frequent maintenance. Filter by your model on this page to see exact pricing for each option.
Q: Can I just replace the chain and keep my old sprockets?
A: You can, but it's not the best long-term move. A new chain running on worn, hooked sprocket teeth wears out faster than it should, so you end up replacing the chain again sooner than expected. Replacing all three together as a kit is the more cost-effective choice over time.
Q: How do I know what size chain and sprocket kit fits my bike?
A: The easiest way is to search or filter by your bike's exact model on this page, since fitment, tooth count and chain length are already matched for you. If you're checking manually, you'll need the chain pitch, the number of links, and the tooth count on both the front and rear sprockets, all of which should match your bike's OEM specification unless you're intentionally changing gearing.
Q: Does changing sprocket size affect my bike's performance?
A: Yes. Adding teeth to the rear sprocket improves acceleration but slightly lowers your top speed, while removing teeth does the opposite. If you change sprocket sizes, you'll usually need to adjust the chain length to match, so it's worth getting fitment advice before making a gearing change.
Q: How often should a motorcycle chain and sprocket kit be replaced?
A: Most kits last between 15,000 and 20,000 kilometers with regular cleaning and lubrication, though this varies with riding conditions and chain type. Watch for hooked sprocket teeth, chain slack that keeps returning after adjustment, or visible rust and stiffness in the chain links, since any of these mean it's time for a replacement rather than another adjustment. If your current kit still has life left, staying on top of lubrication is the easiest way to stretch it further. See our chain lubrication guide for the right interval and technique.