Ideal for the e-bike rider or home mechanic replacing a worn or damaged left-side crank arm on a compatible Shimano STEPS commuter, city or hybrid bike.
The Shimano FC-E5010 Left Hand Crank Arm 170mm is a genuine replacement arm for Shimano STEPS e-bikes using the FC-E5010 crank setup. It’s a left-hand arm only, so it’s the right choice when you need to replace one damaged side rather than buy a complete crankset. The 170 mm length suits riders who want to match their existing setup and keep the bike’s pedalling feel consistent.
Built from aluminium with a square axle interface, this arm is designed for everyday e-bike duty where reliability matters more than flash. The 185 mm Q-factor and FC-E5010 platform are used with Shimano’s E5000 / E5080-series systems, and Shimano’s current compatibility information also lists FC-E5010 within a wide range of approved drivetrain combinations around those drive units.
For the right buyer, this is the simple, sensible repair part: correct fit, clean Shimano finish, and no guesswork if your bike already uses FC-E5010. The main thing to check before ordering is compatibility. You’ll want to confirm your bike is running an FC-E5010 left arm, the correct 170 mm length, and a square-profile interface rather than Shimano’s 24 mm-style e-bike crank standards.
Left-hand replacement arm only
A practical fix when only the non-drive-side arm needs replacing, without paying for a full crankset.
170 mm crank length
Matches a common commuter and e-bike fit, and helps keep your bike’s original pedalling position unchanged.
Shimano STEPS FC-E5010 fit
Made for bikes using the FC-E5010 crank platform, so it suits like-for-like replacement jobs.
Square axle interface
Designed for square-profile crank fitment, which is essential if your existing system is not a 24 mm e-bike crank standard.
Aluminium construction
Keeps the arm durable and practical for regular urban, hybrid and e-bike use.
E-bike specific application
Built for Shimano STEPS-equipped bikes rather than general acoustic bike crank swaps.
185 mm Q-factor platform
Maintains the wider stance used on this crank family for the intended Shimano STEPS setup.
General
Materials & construction
Dimensions & weight
Compatibility
Sizing
Great for
Maybe not for
Check three things before ordering: left side only, 170 mm length, and square interface. Shimano compatibility documents list FC-E5010 with DU-E5000, DU-E5080, DU-E5080-H and DU-E5100 system families in approved combinations, and retailer listings also place it with E5000 / E5080-series setups. If your bike uses an FC-E5000 or FC-E6000/E6100-style crank, don’t assume interchangeability just because the arm looks similar.
vs Shimano STEPS FC-E5000 E-Bike Crank Arm
A close Shimano alternative for city and urban e-bikes, but it is a different crank family with a different finish and its own compatibility requirements.
vs Shimano STEPS FC-E6100 E-Bike Crank Arm
A more modern Shimano e-bike crank option, but it uses a different axle standard and a narrower Q-factor.
Match the old arm exactly
On a replacement like this, the safest path is to match your existing crank model and crank length exactly. If the bike came with FC-E5010 170 mm, this is the straightforward replacement.
Confirm the interface before buying
The big compatibility checkpoint is the square axle profile. Shimano also has e-bike crank arms built around 24 mm interfaces, and they are not a direct substitute.
This is a one-side repair part
You’re buying the left arm only. If both sides are worn, damaged or cosmetically tired, a complete crank arm set may make more sense.
Useful for commuter and utility e-bikes
This crank family appears on practical Shimano STEPS bikes built for transport, hybrid and city riding, so it makes sense for keeping an everyday e-bike on the road without overcomplicating the repair.
Shimano is a Japanese component brand founded in 1921 in Sakai, Osaka. The company began with bicycle component manufacturing and has grown into a global business focused on bicycle components, fishing tackle and rowing equipment, while keeping its headquarters in Sakai.
In cycling, Shimano is best known for building complete component ecosystems that span road, mountain, gravel, commuting and e-bike use. Its range covers drivetrains, brakes, wheels, pedals, shoes and related parts, and the brand has had a long presence in Australia through a local business established in Sydney in 1992.
