Replacement crank arms for electric bicycles designed for strength and secure fit during heavy pedalling. Mechanics and riders who want a straightforward, workshop-friendly swap will appreciate the clear left/right marking and range of lengths with Prowheel Ebike Crank Arm. Does it match your e-bike's spindle and preferred crank length?
⚡ At a Glance
- • Durability: Forged Alloy 6061 construction, high strength and hardness, not easy to deform
- • Best for: Owners of electric bicycles with mid-mounted motors seeking a direct crank replacement
- • Not ideal for: Bicycles without a square taper spindle or non-electric bicycle setups
Forged Alloy 6061 crank arms supplied as a left and right pair, made for e-bikes with a square taper spindle. Six length options, from 140mm to 175mm, cover common e-bike crank requirements.
Durable pedalling under load – with Forged Alloy 6061 construction
Forged Alloy 6061 is specified for the crank arms and described as high strength and high hardness, designed to resist deformation. The forging process and alloy choice combined aim to handle repeated torque from e-bike motors and rider input.
Greater resistance to bending and wear during heavy use, giving confidence for everyday e-bike riding and commuter duties.
Better fit and pedalling economy – thanks to six length options (140–175mm)
Available lengths are 140mm, 152mm, 160mm, 165mm, 170mm and 175mm, allowing selection to match original crank geometry and rider leg length. Correct length helps maintain intended chainline and cadence.
Ability to match crank length helps optimise pedalling comfort and efficiency; user feedback highlights 160mm as a common correct fit for many e-bikes.
Straightforward compatibility for common e-bike setups – with a square taper spindle interface
Spindle interface type is listed as square taper, and both left and right arms share the same hole orientation. Left and right arms are clearly marked L and R to guide correct installation.
Clear left/right markings reduce installation errors, and confirming a square taper spindle ensures a correct mechanical fit; note the bottom bracket may require replacement after multiple crank changes.
✨ The 4 Key Reasons for Prowheel Ebike Crank Arm
- Multiple length options – Match crank length precisely to riding style and cadence
- Square taper interface – Fits common mid-mounted motor spindles with correct orientation
- Left and right markings – Prevents incorrect installation and simplifies workshop fitting for home mechanics
- Sold as a paired set – Ensures matching arms for balanced pedalling on e-bikes
📋 Technical Details at a Glance
- Category: Ebike crank arm
- Brand: Prowheel
- Material: Forged Alloy 6061
- Available lengths: 140mm, 152mm, 160mm, 165mm, 170mm, 175mm
- Spindle interface: Square taper
❓ Frequently Asked Questions
Q: Can these crank arms be used on a non-electric bike?
A: No, the crank arms are specified for use on electric bicycles only.
Q: What spindle type is required for fitment?
A: A square taper spindle is required; check that your crank orientation matches a square taper before fitting.
Q: How do I choose the correct length and fit them correctly?
A: Select from the six available lengths (140–175mm) to match the original crank length, and fit left and right arms according to the L and R markings; if the crank has been replaced previously, the bottom bracket may need replacement when updating the crank again.
🏆 Our Verdict
Suitable for e-bike owners who need a sturdy, workshop-friendly crank replacement for mid-mounted motors. Forged Alloy 6061 construction, clear L/R markings and six length options make for dependable fit and durability. Strong long-term value arises from robust materials and practical sizing choices for common e-bike setups.
