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Unior Chain Wear Checker 1644/4 – Laser-Cut Steel, for 5-12 Speed Chains
Unior 1644/4 — the professional chain wear checker for riders who want to avoid costly damage to cassettes and chainrings.
✔ Precise elongation measurement — scale from 0 to 1.2% over 10 chain links
✔ Laser-cut steel — extreme precision and long-lasting durability
✔ Clear guidance — 0–0.6% = still usable; 0.7–1.2% = replace immediately
✔ Universal compatibility — for 5–12 speed chains (Shimano, SRAM, Campagnolo, KMC)
✔ Workshop-grade tool — trusted by professional mechanics across Europe
A worn chain destroys your entire drivetrain. Check it every 500 km!
Free shipping from €89 and 30-day money-back guarantee. Order now!
Protect your drivetrain with a simple, precise check.
The Unior Chain Wear Checker 1644/4 is the essential tool for every cyclist who wants to avoid expensive cassette and chainring replacements. A worn chain not only loses efficiency but also accelerates wear across your entire drivetrain. With this tool, you can measure the exact elongation over 10 links in seconds, with workshop-level accuracy.
How to read the measurement?
- 0.0 – 0.6%: chain is still in good condition — keep riding.
- 0.7 – 1.2%: chain is worn — replace it now to prevent irreversible drivetrain damage.
Why choose the Unior 1644/4?
- Laser-cut precision — made from hardened steel for micron-level accuracy
- Instant reading — two calibrated teeth show wear status at a glance
- Fits all modern chains — compatible with 5–12 speed systems (Shimano, SRAM, Campagnolo, KMC)
- Zero maintenance — no batteries, no calibration, no plastic parts to wear out
- Unior quality — Slovenian workshop tools trusted by professionals since 1948
- Compact & durable — fits in any tool kit and lasts a lifetime
Technical Specifications:
- Brand: Unior
- Model: 1644/4
- Material: Laser-cut hardened steel
- Measurement: Elongation over 10 links (0.0% – 1.2%)
- Compatibility: 5–12 speed chains
- Weight: ~80 g
- Use: Preventive chain wear inspection
What’s included?
- Unior Chain Wear Checker 1644/4
- 24-month warranty
- Free shipping from €89 across Europe
Why buy from Mognetti Bike?
- Professional-grade tools — we select only workshop-quality accessories
- 2-year warranty handled directly by us
- WhatsApp support — message us for a quick video guide on how to use it
- Secure payments — credit card, PayPal or pay in installments with Heylight
- 30-day money-back guarantee — try it risk-free
Limited stock! Order now and extend your drivetrain’s life with professional-grade precision.
Fast & Reliable Shipping in Italy
Place your order by 12:00 PM (GMT +1), Monday to Friday, and we’ll dispatch it the same business day. In many cases, we can process orders placed later as well.
If your order is placed on a public holiday or includes changes or special requests, shipping will be postponed to the next working day.
We ship exclusively with trusted express couriers. Estimated delivery times:
- 24 business hours for most mainland destinations
- Up to 48 hours for islands or remote areas
A tracking code will be sent by email once the order has shipped. In some cases, tracking may activate within 24 hours after dispatch.
All items are carefully packaged to ensure safe and secure delivery.
Accepted Payment Methods
- Major credit and debit cards
- PayPal
- Bank transfer
- Installment payments via Heylight (available only in Italy)
Buy Now, Pay Later with Heylight
For customers in Italy, we offer the option to split your purchase into monthly payments with Heylight. Simply select this option at checkout and complete the financing request via the secure Heylight portal. Approval is usually received within minutes. Once confirmed, we’ll ship your order immediately.
Need Help?
Send us a WhatsApp message (text only – no calls)
Returns and Refunds
How to Request a Return
You can return your order within 30 days from the delivery date, with the exception of E-Bikes and bicycles, which are covered by the manufacturer's warranty.
Returning a product is quick and easy. Just follow these steps:
- Email us at shop@mognettibike.it including your personal details and order number.
- You’ll receive a confirmation email with your return number and further instructions.
- Write your order number clearly and follow the provided return instructions.
- Use the original packaging to prepare your return.
- If you can't print the return form, include a note in the box with the name and order number of the purchaser.
- Seal the package carefully.
- We’ll send you a confirmation email as soon as the return arrives at our warehouse.
Is the Return Free?
Returns are free of charge for most products. However, E-Bikes and bicycles are excluded and fall under the manufacturer's warranty. Shipping for these returns may be at the customer's expense.
When Will I Receive My Refund?
Once your return is approved, we will issue a refund using the same payment method you used for your order. Refunds are processed within 30 days of receiving your returned item at our facility.
Need Help?
If you have any questions or need assistance, please contact our support team. We’re here to help.
For full details, visit our Returns and Refunds page.