PROWHEEL Bike Crank Arm
- 170 mm crank arms, one pair
- BCD 110 mm chainring bolt circle
- Square taper fitting
- Aluminum, 0.59 kg
- Crank screws included
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A pair of square taper aluminum crank arms in a single length, sold for city, road, folding, mountain and electric bikes. Check the title carefully, since it names several other lengths and bolt circles.
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ASIN: B0B9KX9L4YModel: OUNCEQU-170MCategory: Cranksets
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Overview
Not a single-size part, the Prowheel Ounce is sold in several arm lengths and two bolt circle sizes, and this listing is one specific combination of the two. The pair ships with crank screws and uses a square taper fitting.
A rider replacing worn arms on a square taper bike gets a lightweight aluminum pair in the right length and bolt circle. The limitation is scope: chainrings, a bottom bracket and pedals are not listed.
Who it's for
A bike owner or mechanic replacing arms on a city, folding or road bike with a matching taper and bolt circle. Anyone needing chainrings, bearings or a different length should choose another variant.
Pros and cons
- Pair with crank screws
- Fits many bike types
- Chainrings not listed
- Title names other sizes
- Only one length here
Performance notes
Arm length sets leverage and pedaling cadence, while the bolt circle decides which chainrings can be attached. The square taper interface relies on a matching spindle and the supplied screws for a tight fit.
Specifications
| Brand | PROWHEEL |
|---|---|
| Model | OUNCEQU-170M |
| Dimensions & fit | |
| Size | Crankarm 170mm BCD110 |
| Item weight | 0.59 kg |
| Construction & materials | |
| Material | Aluminum |
| Compatibility & installation | |
| Mount type | Square taper |
| Included components | |
| Included Components | 1 pair crank arm, crank screws |
| Other details | |
| Suggested Users | Unisex adult |
| Style | Sport |
Closest rivals on specs
Frequently asked questions
Which crank length is this Prowheel listing?
The size field says 170 mm with a bolt circle of 110 mm. The title also lists other lengths and a 130 mm bolt circle.
Are the Prowheel Ounce crank arms for electric bikes?
The title names city, road, folding, mountain and electric bikes.