SKU: 56074670538

Unbranded Vintage 172.5 mm Left Crank Arm

Sale price$18.90 Regular price$21.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 9 - Aug 14

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Description

Unbranded Vintage 172.5 mm Left Crank ArmOriginal part in production from the 1930s to the 1950s Suitable for historic cycling events such as L'Eroica Professionally checked & cleaned Worldwide shipping Unbranded vintage left crank arm, most likely in production from the 1930s to the 1950s. Made from steel and weighing in at 254 grams. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike too. If you're taking part in L'Eroica or a similar

✓ Original part - in production from the 1930s to the 1950s
✓ Suitable for historic cycling events such as L'Eroica
✓ Professionally checked & cleaned
✓ Worldwide shipping

Unbranded vintage left crank arm, most likely in production from the 1930s to the 1950s. Made from steel and weighing in at 254 grams. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike too.

If you're taking part in L'Eroica or a similar vintage event, this is fully compliant - so rest assured, the pre-1987 police won't lock you up for having the wrong crank!

The crank arm has been carefully cleaned, thoroughly checked by one of our mechanics and graded as poor condition, but do take a good look at the detailed photos so you can see the cosmetic condition before you buy.

OVERVIEW


Condition - Poor
Production Era - 1930s - 1950s
Material - Steel
Weight - 254 g
Stock Code - U-CA-SL20V

TECHNICAL INFO


Crank Arm Length - 172.5 mm
Pedal Threads - French (14 x 1.25mm)
Bottom Bracket Type - Cottered

SHIPPING, TAXES & RETURNS

We've been safely sending orders around the world since 2010. There's a handy shipping calculator on the shopping cart page so you can see the cost of postage as soon as you've added it to your basket. Your order will be carefully packed and sent with tracking & insurance, we despatch most orders within 2-3 days but larger items and orders placed before the weekend can take an extra day or two to process.

We accept returns, please notify us within 14 days and ensure the item arrives back with us no later than 30 days after the order was received.

EU Customers – for orders under €150 (excluding shipping), VAT will be collected at checkout, but from 1st July 2026, due to new EU import regulations, there may also be a customs duty payable to the carrier. For orders over €150, all import fees will be payable to the carrier, with nothing collected at checkout.

USA Customers – import fees are now collected at checkout for all orders to the US, so there won’t be any surprise charges when your order arrives.

Other International Customers – local import fees may still apply, charged by your customs office or courier before delivery. These are not collected by us, so please check your local rates before purchasing.

Any applicable fees will appear at checkout.

HELP SECTION

Crank Arm Length - this is measured from the absolute centre of the bottom bracket hole to the centre of the hole for the pedal.

Pedal Threads - the pattern of the thread that your pedals screw into, this is usually stamped on the pedals themselves and most bikes use a standard thread of 9/16” x 20 tpi. The exceptions being older French bikes, bikes with cheaper one-piece type chainsets and Shimano’s Dyna Drive system (easily identifiable as the pedal holes are about an inch wide!).

Bottom Bracket Type - ‘square taper’, as the name suggests have a square shaped axle that slots into the crank and ‘cottered’ axles are round and secured by pins - pretty much every bike up until the 1990s would use one of these, cottered being the much earlier system. Since then, different manufacturers have introduced their own systems that are not interchangeable so you must use a crank that matches.


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 56074670538

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Reviewed in the United States on May 25, 2026
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Bob
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★★★★★ 5
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It works!
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