Motorcycle maintenance can feel like a black art to many riders, but few topics spark as much confusion as chain adjustment. A common question that pops up in garages and forums is, “Can You Shorten A Motorcycle Chain?” The short answer is yes, but it is not as simple as just cutting off a few links. Performing this task incorrectly can lead to poor performance, accelerated wear, and even dangerous riding conditions. Understanding the “why” and the “how” of chain shortening is crucial for any rider looking to optimize their machine’s drivetrain.
Understanding When And Why You Need To Shorten A Motorcycle Chain
The need to shorten a chain typically arises when you install a new chain on an existing sprocket set or when you change your sprockets to a different tooth count. New chains are almost always sold in a standard length (usually 120 links) to fit a wide range of bikes. Most of the time, this stock length is too long for your specific swingarm and wheelbase setup. This is where the question “Can You Shorten A Motorcycle Chain” becomes practical.
You should not shorten a chain simply because it appears loose after normal wear. A stretched chain (which is actually worn out) should be replaced, not shortened. Shortening a worn chain only masks the underlying issue of pin and roller degradation, leading to rapid sprocket wear. The correct time to shorten a chain is during the installation of a new chain, specifically to achieve the proper wheel position in the swingarm adjusters. Ideally, you want the axle to sit roughly in the middle of the adjustment range, giving you room to tighten the chain as it naturally stretches during its service life.
The Safe Way To Shorten A Motorcycle Chain (Using A Rivet Link)
When you decide to proceed, the method you choose dictates the strength and safety of the final connection. There are two primary types of master links: clip-style and rivet-style. For safety, most modern OEMs strongly recommend the use of a rivet-type master link. Clip links have been known to fail, potentially causing catastrophic damage to the engine case or your legs.
To safely shorten your chain, you will need a chain breaker tool and a riveting tool. The process involves:
- Measuring the bike to determine exactly how many links need to be removed.
- Pressing the pin out of the link you wish to remove using the breaker tool.
- Connecting the chain ends with the new master link.
- Using the riveting tool to flare the pin ends, securing the link permanently.
This is the only acceptable method if you are a serious rider. For a step-by-step breakdown of this process using proper tools, you should read our detailed guide on Can You Shorten A Motorcycle Chain to ensure you don’t miss a critical safety step.
Common Risks And Mistakes To Avoid During Shortening
The primary risk in shortening a chain is creating a weak point in the drivetrain. Using a hammer and punch to drive out a pin is a recipe for disaster. This method can burr the metal, hardening the pin in place or damaging the side plates. Never attempt to remove a link by grinding the pin heads off unless you have the proper tools to re-rivet the link.
Another common
