A bike’s chain is pivotal in transferring power from the pedals to the bike drive wheel. You should note, however, that every bike chain has a lifespan. Once the lifespan expires, the chain may not work as effectively as you would want it to. So, how many miles should a bike chain last?
Depending on the cycling pattern and bike maintenance, most bike chains last 2000-3000 miles. Note that a well-maintained bike chain can reach up to 8000 miles. Though it’s rare, it does happen.
As you continue riding, you’ll realize that factors like cycling pattern, gear type, and rider’s height also impact a bike’s chain life.
So, sometimes you don’t have to wait till you reach 2000 miles before you can replace a bike chain. Take Dour De France cyclists, for instance. They replace their bike chains at least two times during the course or a three-week race.
We’ll discuss these factors in detail and even look at how you can identify chain wear. But before anything, let’s understand what chain wear is.
What Exactly Is A Chain Wear?
Chain wear occurs when the bike’s pitch extends in length as it wears down. In most cases, it’s a result of the bike chain rubbing against the chain pin.
The longer the chain pitches, the higher the friction between the chain and the tooth, which increases chain wear.
Note that this kind of chain wear is sometimes known as a chain stretch. However, if the chain wear occurs on the chain side, we use the term chain slope.
How To Identify A Chain Wear (How Many Miles Should A Bike Chain Last?)
You can identify chain wear using any of these approaches:
1. Chain Wear Indicator
A chain indicator is a unique tool that you use to check for chain wear. One perfect example is the BIKEHAND Bicycle Bike Chain Wear Indicator.
If the chain indicates 0.75(75%), you should replace the bike chain soon. But if it’s 1.0 (100%), then the replacement should be immediate.
2. Ruler Test
Generally, a standard bike chain has a one-inch complete chain link. You, however, need to measure 12 full links, which should give you 12 inches.
So, the distance between the middle pin of the first link to that of the 12th link should be 12 inches.
If you measure the length with a ruler and it’s more than 12 inches, that is a chain stretch. So, replace the chain immediately.
3. Pull Test
The pull test can help you identify a chain wear less stressfully. You need to shift into the small rear cog and the biggest chainring in front.
Once you do that, pull off the chain from the chainring.
If the chain responds to the pull, then it’s worn out and needs replacing. You can confirm the chain stretch’s extent by observing the daylight between the chainring and the chain.
4. The 2,000-Mile Bike Rule
Remember, most bike chains have a 2,000-3,000 mileage. So, once you reach 2,000 miles with your best bike chain, you don’t have to wait for any other sign to replace it.
That’s more important if you ride high-gear frequently. Also, it’s ideal when you ride in the shine or rain often.
Things That Affect the Bike Chain’s Lifespan
Given that the average bike chain lasts 2,000-3,000 miles and a well-maintained option reaching 8,000 miles, what’s the difference-maker?
You guessed it right! Yes, the first difference maker is chain maintenance. The more you clean and lubricate the bike chain, the more the mileage.
The other difference maker is your riding pattern. Do you ride high gear often? How about under the shine or rain? If so, then you are likely to wear down the bike chain faster.
In such a case, it may be a miracle if you manage to go past 2,000 miles with the bike chain.
In contrast, if you often ride low-gear and generally avoid harsh weather, your bike chain is likely to last more than 2,000 miles.
You probably don’t know this, but your body weight also impacts your chain’s life. If you are overweight, you are likely to wear down the bike chin faster than someone average-size.
Additionally, if you ride your bike aggressively, more so on rugged terrains, you will likely wear down the bike chain faster. That means a mountain bike’s chain has a shorter lifespan than that of a road bike.
What To Do To Prolong Your Bike Chain’s Life (How Long Will A Bike Chain Last)
Generally, you can improve your bike’s chain lifespan by doing the following:
- Ride low-gear
When riding high-gear, you stretch out the bike chain, which stresses it, encouraging easy wear. In contrast, riding low-gear exerts less stress on the bike chain, which slows down wear and stretch.
So, if you intended to use the bike chain longer, consider riding low-gear often.
- Lubricate the chain
Generally, regular lubrication of the bike chain ensures it runs smoothly to enable you to ride faster. In contrast, a dry bike chain is only brittle and more susceptible to wear.
Therefore, learn to lubricate your bike chain more often to boost its smooth operation and lifespan.
You can use the Muc Off Dry Chain Lube for the best chain lubrication results.
- Keep it clean
Chain maintenance goes beyond proper lubrication. You also have to keep the chain clean to boost its performance and mileage.
In that case, wipe off grease and dirt at least twice a month to keep the chain in good shape. Ensure you also do it before lubrication not to contaminate your fresh oil.
Remember, the chain has to dry after cleaning before greasing it.
Tools You’ll Need To Replace A Bike Chain
- Chain Wear Checker
Generally, you need a chain wear checker to check for chain wear or chain stretch. It’s a hustle-free way to determine if your bike’s chain needs replacing and when to do it.
As I mentioned, a chain wear checker like the BIKEHAND Bicycle Bike Chain Wear Indicator will indicate the perfect time to replace the bike chain.
- Chain Pliers
In case your bike chain features a master lick, consider using chain pliers to compress it (the link) and undo it properly.
But if it’s a new chain, then you could probably use your hands.
Overall, I recommend the Park Tool MLP-1.2 Bicycle Chain Master Link Pliers for replacing the master link on any 5-12-speed derailleur chain.
Overall, I recommend the Crankbrothers M19 Multi-Tool + Case if you want a pack of all essential tools for replacing your bike chain and handling other DIY projects.
You’ll get 19 tools that include flathead screwdrivers, Philips screwdrivers, spoke ranges, and a universal tool.
FAQs On How Many Miles Should A Bike Chain Last
1. How Often Should I Replace My Bike Chain?
Generally, it’s a smart idea to replace your bike chain after reaching 2,000 miles.
Though a well-maintained bike chain can go up to 8,000 miles, changing it after 2,000 miles promises optimal performance from the chain.
But in case you identify some signs of wear before reaching 2,000 miles, replace the chain immediately.
2. How Do I Know If My Bike Chain Needs Replacing?
You can tell that your bike chain is worn out using a chain wear checker that you can buy online. The checker comes with user instructions to help you check for chain wear better.
You can also check for chain wear by pulling the chain off its chainring. If it does pull off, then it needs replacing.
Plus, you can use a meter ruler to measure chain stretch. If the distance between the first and 12th link is more than 12 inches, the chain needs replacing.
3. How Much Does It Cost To Get A Bike Chain Replaced?
Bike chains come at varying prices depending on model, brand, and performance.
On average, entry-level bike chains cost $10 or thereabout with high-end options costing $25-$60.
4. How Long Should Your Bike Chain Be?
Usually, a new bike chain should be 12 inches long across 12 complete links. If that’s not the case, you should replace the chain immediately as it indicates a chain stretch.
5. How Many Miles Does A Mountain Bike Chain Last?
Mountain biking is an aggressive form of cycling. You’ll mostly ride high-gear, and that stresses the bike chain. So, the chain’s life is likely to shorten.
While it’s possible to exceed 2,000 miles while riding a road bicycle, it’s harder to reach 2,000 miles with a mountain bike because of the aggressive riding.
6. What Are The Dangers Of Not Replacing A Worn Out Bike Chain?
Chain wear presents the following dangers:
- Poor shifting – With a chain stretch, it’s more challenging to shift the gears.
- Chain snapping – The chain may be going out of position when cycling.
- Cassette wearing – If you mistakenly introduce a new cassette to a worn-out bike chain, you could end up wearing down the cassette.
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So, how many miles should a bike chain last? You can expect a bike chain to last you at least 2,000 miles with proper maintenance and use. So, take time to maintain your bike chain to get the best and lasting performance.