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The sprocket wear indicator is used to determine the condition rear sprockets. It can be used to check 12 to 21 tooth sprockets.
The sprocket wear indicator is used to determine the condition rear sprockets. It can be used to check 12 to 21 tooth sprockets.
Unior

Unior Sprocket Wear Indicator

£18.99
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With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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Returns & Replacements

We want you to be completely satisfied with your purchase. If something isn’t right, here’s how we can help:


🕒 Returns Window

  • Parts, Accessories & Clothing: Return within 30 days (in-store or online)
  • Bikes & Frames: Return within 30 days (online orders only)

📦 Return Conditions

To be eligible for a return:

  • Items must be unused, unfitted, and in resale condition
  • Returned in original, undamaged packaging
  • Properly packed to prevent damage in transit
    (Contact us if you need packaging advice)

⚠️ Important:
Please do not attach labels or tape directly to retail packaging — wrap the item securely first.


🚚 Returning Your Item

Online Orders

  • Customers are responsible for return postage costs
  • We recommend using a tracked/recorded delivery service
  • If the item is faulty, damaged, or incorrect, we will:
    • Refund reasonable return postage costs
      (Excludes premium/special delivery or international shipping)

In-Store Purchases

  • Must be returned to the original store of purchase
  • Collection will also be from that store

⚠️ Important Information

  • Return requests must be submitted in writing or via email
  • We are not responsible for loss, time, or costs incurred during returns (including warranty returns)

🔧 Non-Returnable Items

We do not accept returns on:

  • Custom bike builds
  • Used or ridden bikes
  • Custom or made-to-order items

📌 Special Orders

Items ordered specifically for a customer (not held in stock):

  • May incur a restocking fee if cancelled
  • Or loss of deposit

📝 How to Start a Return

Please complete our Returns Form to begin the process.

Unior Sprocket Wear Indicator

Brand:Unior

Code:UN629230

The sprocket wear indicator is used to determine the condition rear sprockets. It can be used to check 12 to 21 tooth sprockets.

Procedure: the chain is put on the sprocket and the tool placed with its round end between two teeth on the upper sprocket side. The last chain link is moved away from the sprocket and a force of 100 n or 10 kg is applied to the tool in the direction of sprocket rotation.

Now the last chain link is moved towards the sprocket. If it skips easily to the cog the sprocket is in a good condition and will function flawlessly even with a new chain. However, if the last chain link gets stuck on the tip of the neighbouring tooth or if we have to force it to skip on the cog, the sprocket is worn out and should be replaced. In case the chain falls off the clog when applying force, the sprocket is heavily worn out and a replacement is overdue.

Features:

  • Material: premium flex plus carbon steel
  • Surface finish: chrome plated according to iso 1456:2009
  • For hg and ig sprockets
  • Length 270
  • Width 13
  • Height 43
  • Width 2.18
  • Weight 77
Sizing Information
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