165 Vs 170 Crank Length: Which Is The Best For Cycling

There are many factors to consider when choosing a crank length for your road bike. The most important factor is your riding style. If you’re a racer, you’ll want a shorter crank length for increased efficiency.

If you’re more of a recreational rider, you may prefer a longer crank length for comfort. Other factors to consider include your inseam measurement, the type of pedals you use, and the gearing of your bike. In general, racing cyclists tend to prefer shorter cranks (165mm) while recreational riders tend to prefer longer cranks (170mm).

There are pros and cons to both lengths, so it’s important to choose the right one for your riding style. Shorter cranks offer greater pedaling efficiency but can be uncomfortable for long rides. Longer cranks provide more leverage and power but can be less efficient on hills.

If you’re unsure which length is right for you, most bike shops will let you test ride different lengths before making a purchase. Ultimately, it comes down to personal preference – so experiment until you find what feels best for you!

There’s a lot of debate in the cycling world about what size crank length is best. Some people swear by 165mm cranks, while others prefer 170mm. So which is the right size for you?

Here’s a quick rundown of the pros and cons of each size: 165mm cranks are shorter, which some riders find more comfortable and easier to spin. They’re also lighter weight, making them ideal for racing.

On the downside, they can be harder to pedal up hills and may cause knee pain for some riders. 170mm cranks are longer, which some riders find gives them more power when pedaling. They’re also great for climbing hills since you have more leverage with a longer crank.

However, they can be heavier and may not be as comfortable for some riders. So which should you choose? Ultimately, it comes down to personal preference.

If you’re unsure, try riding with both sizes and see which feels better for you.

Should I Go to 165Mm Cranks?

There’s a lot to consider when purchasing a new set of cranks, and one important factor is the length. So, should you go with 165mm cranks? Here are a few things to keep in mind that may help you make your decision:

Your height: If you’re on the taller side, you may feel more comfortable on 165mm cranks. Conversely, if you’re shorter, 172.5mm or 170mm cranks may be a better option. The type of riding you do: If you tend to do a lot of climbing, shorter cranks can be beneficial as they can help reduce fatigue in your legs.

However, if most of your riding is on flat or downhill terrain, longer cranks can give you more power. Your current bike setup: It’s important to make sure that your frame and bottom bracket can accommodate the size of crank you’re planning to purchase. Additionally, if you have existing pedals, cleats or shoes, those may need to be replaced as well.

Ultimately, it’s up to personal preference whether165mm cranks are right for you. But by keeping these factors in mind during your search, you’ll be sure to find the perfect set for your needs.

Does Crank Arm Length Really Matter?

When it comes to bicycles, the crank arm length is the distance from the center of the bottom bracket to the center of the pedal axle. Most bikes have crank arms that are between 170 and 175 millimeters long, but some riders prefer shorter or longer crank arms based on their riding style and bike fit. So, does crank arm length really matter?

The answer is yes…and no. For most riders, choosing a bike with standard-sized cranks will work just fine. But if you’re a competitive rider looking for every possible advantage, or you have specific fit requirements, then changing your crank arms (or having them custom made) can make a difference.

Shorter cranks offer several advantages. They allow you to spin faster because there’s less mass to move around with each pedal stroke. This can be helpful when climbing hills or sprinting for the finish line.

Shorter cranks also reduce your Q-factor (the distance between your feet), which can improve pedaling efficiency and comfort. But shorter cranks also have a few potential drawbacks. Because they offer less leverage than longer cranks, they require more effort to turn – which can lead to fatigue on long rides.

And if your bike isn’t properly dialed in for your body size, shortened cranks can cause knee pain due to improper tracking of the knees over the pedals. So if you’re wondering whether shorter or longer cranks are right for you, it ultimately comes down to trial and error – along with taking into account your riding style, goals and physiology. If you’re just getting started with cycling, stick with standard-sized cranks until you get a feel for what works best for you.

Then experiment from there until you find the perfect fit!

Which is Better 170Mm Or 175Mm Crank Arm?

There are a few things to consider when choosing between a 170mm or 175mm crank arm length. One is the type of bike you ride. A road bike typically uses a longer crank arm, while a mountain bike uses a shorter one.

The other thing to consider is your own personal physiology. A taller rider will usually prefer a longer crank arm, while a shorter rider will prefer a shorter one. And finally, it’s important to think about what kind of riding you do most often.

If you’re mostly racing or doing long distance rides, you’ll probably want a longer crank arm. But if you’re mostly riding around town or on trails, a shorter crank arm might be better for you.

What Difference Does a Longer Crank Make?

What Difference Does a Longer Crank Make

If you’re looking to add a little more oomph to your pedaling, you may want to consider swapping out your crankset for one with longer crank arms. But what difference does a longer crank make, and is it right for you? Longer cranks offer a number of advantages over shorter ones.

First, they provide more leverage, which means that each pedal stroke is more powerful. Second, they allow you to maintain a higher cadence (pedaling speed) without sacrificing power. And third, they can help you overcome “dead spots” in your pedaling stroke.

Of course, there are also some disadvantages to using longer cranks. The biggest one is that they can be harder to control on tight turns or in other technical riding situations. They also tend to be heavier than shorter cranksets and may require the use of specially-sized chainrings.

So should you switch to longer cranks? If you’re looking for more power and better spin efficiency, then the answer is probably yes. Just be prepared for a bit of a learning curve as you get used to their increased length.

Crank length: Why I switched to 165 from 170

Crank Length Calculator

If you’re looking for a quick and easy way to determine the ideal crank length for your cycling needs, look no further than our Crank Length Calculator. Simply enter your height and inseam measurements into the corresponding fields, and hit the “Calculate” button. Your perfect crank length will be displayed in centimeters.

It’s important to note that the vast majority of bicycles come equipped with cranks that are far too long for most riders. In fact, it’s not uncommon for stock cranks to be 10%+ too long! This is why it’s so important to use a calculator like ours to find your ideal length – doing so can dramatically improve both your comfort level and pedaling efficiency.

Now that you know how easy it is to find your ideal crank length, there’s no excuse not to give it a try!


There are a few things to consider when choosing between a 165mm and 170mm crank length for your road bike. One is the impact on your pedaling efficiency. A longer crank will give you more leverage, making it easier to pedal at high speeds.

However, a shorter crank will be lighter and easier to spin around. The other thing to consider is the effect on your knees. A longer crank can put more strain on your knees, so if you have any knee problems, you might want to go with a shorter length.

Ultimately, it’s up to you to decide what feels best for your riding style and comfort level.

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