Shimano Rear Derailleur | Ultegra RD-R8000, 11-Speed, Shadow Plus

Ultegra - The iconic groupset that helped the world experience the race-ready qualities of DuraAce.

The SHIMANO ULTEGRA 8000 series rear derailleurs deliver accurate shifting and light action by blending performance and style. It comes in two configurations to match your choice of cassette teeth.

The true spirit of the sport

The New ULTEGRA R8000 series is "pro-proven" as it is a direct trickle-down from the DURA-ACE groupset. As a road bike component, the stress-free operation is an essential feature that leads to all-day riding comfort with braking and shifting.

• Ride harder with superior ergonomics.
• Advanced control in all conditions
• Customizable for your racing style.

R8000 Series
The Shimano Ultegra RD-R8000 11-speed rear derailleur now also uses the Shadow design, as was previously the case with Dura-Ace. This highly flat profile, combined with the more direct positioning, reduces the risk of damage and ensures clean, quiet gear changes under all conditions. In addition, the direct mount compatibility results in a new mounting option. The Ultegra rear derailleur is mainly made of aluminum. It is available in two versions: one with a short cage (SS type) for cassettes up to 11-30 and the other with a longer cage (GS type) for cassettes up to a gradation of 11-34. So you can cope with even the steepest ascents.

Specifications:

• Series: Ultegra R8000
• Application: Road, Cyclocross
• Gearing: 11-speed
• Mount: Standard (Direct Mount compatible)
• Capacity: 35 teeth (short), 39 teeth (long)
• Compatibility: Shimano Road 11-speed
• Compatibility - Chains: HG-EV 11-speed, HG-X11

Technical Information:

• Derailleur Pulleys: 11 tooth
• Outer Cage Material: Aluminum
• Inner Cage Material: Aluminum
• Other Materials: Aluminum, composite (GFRP), stainless steel

Features:

• Low profile Shimano Shadow RD design increases stability and reduces susceptibility to defects, providing the compact appearance
• Two cage lengths for a wide range of gears
• Painted cage plates
• Derailleur pulley bearings
• 4 joint bushings, fluorine-coated

Technology:

Shadow RD
The rear mechanism derailleur, Shimano Shadow RD, is intended for more aggressive riding. Its super low-profile design carries many benefits. Because of its low profile and single-tension construction, the derailleur does not hit the chainstay in rough riding conditions. The result is a smooth and silent performance.

Models:

Short:

• Cage Length: SS
• Largest Sprocket Teeth (max.): 30 teeth
• Largest Sprocket Teeth (min.): 25 teeth
• Smallest Sprocket Teeth (max.): 14 teeth
• Smallest Sprocket Teeth (min.): 11 teeth
• Chainring Difference (max.): 16 teeth
• Total Capacity: 35 teeth
• SKU#: IRDR8000SS

Medium:

• Cage Length: GS
• Largest Sprocket Teeth (max.): 34 teeth
• Largest Sprocket Teeth (min.): 28 teeth
• Smallest Sprocket Teeth (max.): 12 teeth
• Smallest Sprocket Teeth (min.): 11 teeth
• Chainring Difference (max.): 16 teeth
• Total Capacity: 39 teeth
• SKU#: IRDR8000GS

Weight:

• Black/Short: 200 g
• Black/Long: 210 g

SHIMANO ULTEGRA - Rear Derailleur - Short Cage - SHIMANO SHADOW RD - 11-speed  RD-R8000-SS

Updated with a SHIMANO SHADOW RD design, the SHIMANO ULTEGRA 8000 rear derailleur offered a sleek appearance and optimized shifting performance.

• Covers: 11-25T to 11-30T

Product Specifications

• MODEL NO RD-R8000-SS
• SERIES ULTEGRA R8000 Series
• Color Series color
• Average weight 200
• Remarks * w/o Bracket spec available
• B-axle_Hollow axle ✔
• Cable adjuster ✔
• Compatible chain HG-EV 11-speed/HG-X11
• Mount_Direct attachment (Conventional) X *
• Fluoric-coated link bushings 4
• Low sprocket_Max. 30T
• Low sprocket_Min. 25T
• Max. front difference 16T
• Pulley_G pulley bearing ✔
• Pulley_Sunken type pulley bolt ✔
• Pulley_Teeth 11T
• Pulley_T pulley bearing ✔
• Pulley cage SS
• Speeds 11
• Top-Normal spring type_SHADOW RD ✔
• Top sprocket_Max. 14T
• Top sprocket_Min. 11T
• Total capacity 35T

SHIMANO ULTEGRA - Rear Derailleur - Medium Cage - SHIMANO SHADOW RD - 11-speed RD-R8000-GS

Updated with a SHIMANO SHADOW design, the SHIMANO ULTEGRA 8000 rear derailleur offered a sleek appearance and optimized shifting performance.

• Covers: 11-28T to 11-34T

Product Specifications

• MODEL NO RD-R8000-GS
• SERIES ULTEGRA R8000 Series
• Color Series color
• Average weight 210
• Remarks * w/o Bracket spec available
• B-axle_Hollow axle ✔
• Cable adjuster ✔
• Compatible chain HG-EV 11-speed/HG-X11
• Mount_Direct attachment (Conventional) X *
• Fluoric-coated link bushings 4
• Low sprocket_Max. 34T
• Low sprocket_Min. 28T
• Max. front difference 16T
• Pulley_G pulley bearing ✔
• Pulley_Sunken type pulley bolt ✔
• Pulley_Teeth 11T
• Pulley_T pulley bearing ✔
• Pulley cage GS
• Speeds 11
• Top-Normal spring type_SHADOW RD ✔
• Top sprocket_Max. 12T
• Top sprocket_Min. 11T
• Total capacity 39T

SKU#

• Short Cage: RD-8000SS (IRD8000SS)
• Medium Cage: RD-8000GS (IRD8000GS).

*Note: Images are for representational purposes only. Actual size/packaging varies with product type/size.

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