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Cranksets or “cranks” are one of the most essential parts of your drivetrain. A high-quality set of cranks will help transfer more of the power from your legs to your back wheel, ultimately propelling you forwards faster and more efficiently. Explore our range mountain-bike, road, and gravel cranksets, from some of the most reputable brands in the industry, like Shimano, SRAM, Race Face, and Rotor. If it’s a complete chainset you’re after, then offer a wide range of those too.
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  • Chainsets (3)


What is a Crankset?

The crankset, frequently referred to simply as the “cranks”, is the parts of the bike you rotate with the power of your legs. It’s a chainset, without the chainrings. The chainrings are designed to be replaceable and will wear down eventually (depending on how much you ride), the crank should last you through multiple sets of chainrings, with appropriate maintenance.

Choosing the right one for you…

You’ll generally need to consider your riding style and discipline. Road, mountain bike, gravel, and track cranks will all be different. Another consideration is how many chainrings you’ll be using: a single chainring, double, or triple. Single chainrings are more common off-road (Shimano XTR or Deore, for example) or for a single-speed city bike. Double chainrings are pretty much the norm on the road, Shimano 105 or Ultegra, is the example here. But that’s not to say they’re exclusively confined to these.

Generally, the benefit of a single ring is that it’s simpler to use and maintain, and offers fewer opportunities to go wrong. However, fairly obviously, a single ring offers fewer gear choices than a double ring.

How Do They Fit to Your Bike?

The crankset is comprised of a drive side (the right) and a non-drive side (left). The left side is the right crank arm, crank spider (which is where chainrings attach), and a spindle. The spindle is threaded through the bike, via the bottom bracket. The left crank arm is then attached to the drive side.

When changing cranks, it’s important to consider the bottom bracket of your bike, as not all will be compatible. This will also determine the tools required to fit a new product.

Crank Length

Cranks come in different lengths. The right size for you will depend on usage and rider size. The range is typically 165mm–190mm, with the “standard” size being 172.5mm, give-or-take 2.5mm or so. There’s no “perfect” length for you, a lot will come down to preference.