Is the "medium" cage the ss or the gs version? shimano literature does not use the terms "short" or "medium" in their descriptions of the rd 8000.

medium is GS, short is SS for Shimano RD-8000 derailleurs. They cover 11-28T to 11-34T and 11-25T to 11-28T, respectively. See https://bike.shimano.com/en-EU/product/component/ultegra-r8000.html

is this for 10 speed ?

Actually, this will work with 10sp Tiagra. If you have ST-4700 levers (not sure about the MTB (flat bar) shifter version), then the pull ratio will work for and as 10sp on your 10sp cassette and shifter. You'll be future-proofed when you decide to switch out the lever, chain and cassette for actual 11sp. I am running ST-4700, RD-R8000GS, CS-MT771-10, CN-6701 (10sp) chain and everything works flawlessly.

El de tamaño M es el conocido como patilla larga ?

Sí, es lo mismo que pata larga.

What length of chain do I need with a medium cage?

Hi, we sell standard length: 116 link & you buy it & you have to cut yourself. if you need chain, we have it at my amazon store cycle4less asin #B00KQK5RAW. Bob

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Ultegra R8000 Rear Derailleur Box

Product ID: 66952101

Details

Brand
SHIMANO
Color
Gray
Item Weight
7.04 ounces
Material
Metal
Mounting Type
Braze-On Mount

🔩Durable alloy construction

⚙️Precision 11-speed shifting

🚴‍♂️Wide cassette compatibility

23678 kr

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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Shift into the future of cycling precision!

DIRECT BRAZE ON MOUNT - Easy installation with secure, stable mounting for professional-grade reliability.
LIGHTWEIGHT ALLOY BUILD - Crafted from premium alloy for strength without the weight penalty.
VERSATILE CASSETTE RANGE - Supports 11-30t to 11-34t cassettes, perfect for varied terrain mastery.
SEAMLESS 11 SPEED PERFORMANCE - Experience ultra-smooth gear transitions with Shimano’s precision engineering.
SHADOW DESIGN FOR SLEEK PROFILE - Low-profile design reduces snagging and enhances aerodynamics on every ride.

The Shimano Ultegra R8000 Rear Derailleur is a high-performance, lightweight alloy component designed for 11-speed drivetrains. Featuring a sleek Shadow design and compatibility with a wide cassette range (11-30t to 11-34t), it ensures smooth, reliable shifting for serious cyclists. Its direct braze-on mount offers easy installation and enhanced stability, backed by Shimano’s trusted 2-year warranty.

Specifications

ASIN	B072MKT5NR
Best Sellers Rank	#65,980 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #23 in Rear Bike Derailleurs
Brand Name	SHIMANO
Case Material Type	Other
Color	Gray
Customer Reviews	4.7 4.7 out of 5 stars (756)
Global Trade Identification Number	00689228623156, 04524667623151
Included Components	Bike Parts
Item Dimensions L x W x H	9"L x 4.5"W x 4"H
Item Type Name	Bicycle Parts
Item Weight	7.04 ounces
Manufacturer	Shimano
Manufacturer Part Number	IRDR8000SS
Material Type	Metal
Model Number	C8C055
Mount Type	Braze-On Mount
Number of Items	1
Number of Teeth	35
UPC	689228623156
Unit Count	1 Count
Warranty Description	2 Year Manufacturer

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