Home > Brand > Stone chainring Brand > STONE Road Bike Front Derailleur Extender adapter convertor for SHIMANO R7000 R8000 R9100 105 ULTEGRA Chainrings 10/11S Speed

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STONE Road Bike Front Derailleur Extender adapter convertor for SHIMANO 105 R7000 ULTEGRA R8000 Dura ACE R9100 Chainrings 10/11S Speed

Name: STONE Road Bike Front Derailleur Extender adapter convertor for SHIMANO 105 R7000 ULTEGRA R8000 Dura ACE R9100 Chainrings 10/11S Speed
Brand: DJC Bikes - DJC Components
Price: 22.05 USD
Availability: InStock
Rating: 5 (14 reviews)

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Specifications
Warranty FAQ

STONE Road Bike Front Derailleur Extender adapter convertor for SHIMANO R7000 R8000 R9100 105 ULTEGRA Chainrings 10/11S Speed

Fit for:
SHIMANO DURA-ACE R9100
ULTEGRA R8000
105 R7000

10s/11s Road Bike front derailleur (not fit for 12s, not fit formountain bike)

Function: if you want to use small size of chainring such as 48T 46T, then need this extender to make your front Derailleur lower to let it fit to the 48 46T chainring.

Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier. Offer best stiffness and endurance.

Material:
Extender: AL7075

Screw: 304

extend distance: 15.5mm

Weight: 4g

STONE — Race-Ready Precision

Trusted by riders worldwide and favored by EU & USA race teams, STONE is built for high-load riding and competitive performance.

Using aerospace-grade 7075-T651 aluminum from Alcoa and Aleris, STONE achieves exceptional stiffness and durability, with a tested lifespan of up to 15,000 km.
High-precision CNC machining within 0.03 mm tolerance guarantees efficient power transfer, minimal noise, and stable shifting under pressure.

Engineered for racing. Proven on the road.

All Taxes & Duties Included • Fast Delivery (8–12 Days) • No Hidden Fees • 6-Month Warranty

1 How long is the warranty?
We offer 6 months limited warranty to all products because of the quality defects. We offer lifetime payable repair service after the warranty.

2 Do need to pay tax duty when package arrive my country?
You no need to pay tax when package arrive your country, most countries in the world no need pay.
USA aslo no need tax duty and tariff, our carrier will cover it.

Brazil, Chile, Columbia clients need pay import duty when package arrive your country.

3 Can I return the goods if I am not like it?
Yes you can apply return and refund when you receive the product within 7 days. But as return shipping fee is relatively high when send back to China, so we suggest you consider and carefully before purchase.

Or you can send message to us and discuss technical issues to clarify if the products is what you need, and then pay after you sure your order is correct.

4 How long is the shipping time?
To most countries 7-15days can arrive your address. Pay extra 20USD if want ship by Fedex DHL UPS.

Support email info@djcbikes.com

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