If you ride your motorcycle often, you’ll eventually reach the point where the chain needs replacing. But here’s the catch: changing just the chain without replacing the sprockets is like fitting new tyres to bent rims. It may seem fine at first, but the wear, performance, and safety issues will soon catch up to you.
Let’s unpack why it’s essential to replace both sprockets when you install a new chain, and how to care for your new setup with the right lubrication.
1. Chains and Sprockets wear as a unit
Over time, your chain and sprockets form a unique wear pattern together. The teeth on the sprockets gradually become hooked or worn to match the stretched or worn chain links. Fitting a fresh chain to worn sprockets means the chain won’t seat properly, causing poor engagement and accelerated wear.
2. Prolonging Chain Life
A new chain on worn sprockets wears unevenly and much faster. The uneven load distribution puts stress on the links, reducing the lifespan of your new chain by up to half. By replacing the chain and both sprockets, you ensure a clean slate and allow the entire drivetrain to wear evenly and smoothly.
3. Safety First
A poorly matched chain and sprocket set can lead to:
- Chain skipping
- Unexpected power loss
- Increased risk of derailment at speed
These aren’t just mechanical issues; they’re dangerous. Maintaining a properly matched drivetrain is critical to keeping your ride predictable and safe.
4. It’s more Cost-Effective in the Long Run
While changing only the chain may seem like a cost-saving move, you’ll likely end up replacing it again sooner and possibly doing more damage to your drivetrain. Investing in a full replacement of chain and sprockets upfront saves you money and hassle down the road.
5. It’s what the Pros recommend
Ask any experienced mechanic or check your motorcycle’s owner manual, the rule of thumb is clear: replace the chain and both sprockets together. It’s best practice for performance, reliability, and peace of mind.
I’m not done yet! Don’t forget Chain Maintenance
Once you’ve fitted your new chain and sprockets, lubrication becomes key to performance and longevity.
Chain Lube vs Chain Wax – What’s the Difference?
- Chain Lube
Penetrates deep into the chain’s O-rings or X-rings and provides excellent lubrication under high-speed or high-heat conditions. It’s best for sport and performance bikes that are ridden often or aggressively. - Chain Wax
Offers a thicker, more protective coating that repels water and dirt better, making it ideal for off-road or adventure riding. It also sticks better to the chain, flinging off less than traditional lube.
Pro Tip: Always clean your chain before applying fresh lube or wax, and never apply lubrication to a hot chain after a ride; let it cool down for the best absorption.
Replacing your Motorcycle Chain?
Replace both sprockets, too. It’s not just a best practice, it’s a must for a safer, smoother, and longer-lasting ride. Then maintain your new setup with regular cleaning and proper lubrication using the right product for your riding style.
