1501221171
Shimano Acera Rd-m3020 Shadow Rear Derailleur Long Leg 7/8 Gear
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- SKU: 1501221171 - Ean: 4550170897734
Shimano Acera Rd-m3020 Shadow Rear Derailleur Long Leg 7/8 Gear
Product Features
Shimano Acera RD-M3020 Rear Derailleur – 7/8 Speed | SGS Long Crankset | 40T Compatible
Wide compatibility for mountain and city bikes, smooth gear shifting, and Shimano Acera quality!
The Shimano RD-M3020 is a durable and precise rear derailleur developed for users seeking high performance in 7 and 8-speed systems. Part of Shimano's Acera series, this model stands out for its smooth and reliable gear changes, even in rough terrain .
With a total capacity of 45 teeth and compatibility with large 40T sprocket sizes, it's an ideal choice for riders who want to use a wide transmission ratio. The SGS long leg design and 11-tooth pulleys optimize chain tension, ensuring quiet and smooth shifts.
🔧 Technical Specifications
| Feature | Explanation |
|---|---|
| Manufacturer | Shimano |
| Product Group | Acera |
| Model | RD-M3020 |
| Gear Compatibility | 7 / 8 gears |
| Reel Cage | SGS (Long Legs) |
| Total Capacity | 45 Teeth |
| Max. Ruble Large Gear | 40T |
| Min. Ruble Large Gear | 30T |
| Max. Ruble Small Gear | 12T |
| Min. Ruble Small Gear | 11T |
| Maximum Front Tooth Difference | 20D |
| Number of Teeth on the Pulley | 11T – 11T |
| Cable Adjuster | There is |
| Compatible Chain | HG 7/8/6 |
| Material | Steel-weighted body |
| Package Type | Single pack |
| Colour | Black |
⭐ Key Advantages
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Precise and fast gear changes with dual servo mechanisms.
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Smooth, quiet, and reliable performance, even on uneven terrain.
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Ideal for riders who want a wide tooth spacing thanks to 40T cassette compatibility.
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Durable steel frame and robust construction.
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Easy fine adjustment thanks to the cable adjuster.
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Compatible with most 7/8 speed systems.
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Suitable for trekking, city riding and MTB use.
🧩 Compatibility Information
✔ Compatible 8-speed shift levers:
SL-M360-R, SL-M310-8R, SL-M315-8R, SL-RS47-8R, SL-RS45-8R, SL-RV400-8R,
ST-M310-8R2, ST-M310-8R4, ST-TX800-8R, ST-EF65-8R2/8R4, ST-EF500-8R2A/8R4A,
ST-EF510-8R2A/8R4A, ST-EF505-8R
✔ Compatible 8-disc Cassettes:
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11-40T: CS-HG400-8
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11-30T/11-32T: CS-HG51-8, CS-HG41-8, CS-HG31-8
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11-34T: CS-HG41-8, CS-HG31-8
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12-32T: CS-HG200-8
✔ Compatible 8-Piece Chains:
CN-HG71, CN-HG40
✔ Compatible 7-speed gear shifters:
SL-M310-7R, SL-M315-7R, SL-RS47-7R, SL-RS45-7R, SL-RS36-7R, SL-RS35-7R,
SL-RV400-7R, SL-RV300-7R, SL-RV200-7R, SL-FT55-7R, SL-TX50-7R, SL-TX30-7R,
SL-TZ500-7R, SL-TZ20-7R, ST-EF65-7R2/7R4, ST-EF500-7R2A/7R4A, ST-EF510-7R2A/7R4A,
ST-EF505-7R, ST-EF41-7R
✔ Compatible 7-disc Cassettes:
CS-HG200-7 (12-32T)
✔ Compatible 7-Piece Chains:
CN-HG71, CN-HG40
📦 Delivery Scope
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1 x Shimano Acera RD-M3020 Rear Derailleur – 7/8 Speed – Black
ℹ️ Additional Technical Notes
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The biggest difference is the tooth size between the large and small leaf of the mirror arm.
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Total Capacity: This is the sum of the crankset difference and the cassette difference.
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Ruble Lower (Large) Gear: The largest gear on the cassette.
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Upper (Small) Gear: The smallest gear on the cassette.
You can contact us for any questions you may have. We will get back to you as soon as possible, within 24 hours on weekdays . We are happy to help! 🚀
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When will my order be shipped?
Your orders are usually delivered to cargo on the same day . This period may vary depending on the density during campaign periods.
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Customer service
You can reach us 24/7 by e-mail at info@ugurbisiklet.com.
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FAQ
You can find the Frequently Asked Questions at the bottom of the product page.
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Contact Us
You can call us at +90 850 307 1550 whenever you want.
International Shipping
Continuous Discount
100% Originality Guarantee
All our products are 100% original and are offered with quality and assurance. As Uğur Bicycle, we only deliver products that we procure from reliable and authorized suppliers and that we distribute ourselves. Shop with peace of mind, pedal to quality!
Free Shipping and Free Returns
Frequently Asked Questions
📌 When will my order be shipped?
Your orders will be delivered to cargo within 1-2 business days . This period may vary depending on the density during campaign periods.
📌 Which Cargo Company Do You Work With?
Shipments are made within Türkiye with Domestic Cargo. International shipments are sent with any of the companies DHL - FEDEX - TNT.
📌 How can I track my order?
When your order is shipped, the tracking number is shared via e-mail and SMS. You can track your order on the cargo company's website with this number.
📌 How can I return and exchange a product?
You can return the products within 14 days , unused and in their original packaging. You can review our return policy for detailed return procedures.
📌 When will I be refunded for the product I returned?
Once your return is approved, your payment will be refunded within 3-7 business days , depending on the payment method you used.
📌 Do your products have a warranty?
Yes! All products on sale are under manufacturer or distributor warranty . You can check the product descriptions for warranty period and conditions.