Shimano Ultegra HG-800 11 speed Cassette

Shimano Ultegra HG-800 11 speed Cassette
45 reviews
Number of gears
Body Type
Cassette Ratio
68,61 33,86 discount
In stock (10+)

  • Ordered before 23:00, delivered on Wednesday
  • Free tracked shipping over 99,00€

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Pros & Cons

Pros & Cons

  • Ain't no mountain high enough with this gear ratio!
  • This cassette is made of light materials.
  • Thanks to a special coating, this cassette lasts longer.
  • Not every derailleur can handle this cassette. Be sure to check this in the description.
Read more on what our customers have to say about this product

Specifications

Specifications

Brand
Shimano
Bike Type
Road bike / Gravel bike
Number of gears
11 speed
Body Type
SRAM Race 10/11 speed / Shimano Race HG 9-12 speed
Cassette Ratio
11 / 34
Weight
337 grams (11-34T)
What groupset do you have?
Shimano Ultegra
Quality
Better
Suitable for
Shimano

Description

Description

The Shimano Ultegra HG800 road bike cassette is the largest in its kind with a 34T sprocket. The cassette has been given an improved finish quality to work better with a more fluent shifting motion and with a higher level of durability than its predecessor. These lighter gears make the HG-800 ideal for use on longer climbs.

Technology

Good workmanship
This cassette has a slightly better finish to ensure smooth shifting and durability. With its light toothing, the HG-800 is the ideal cassette on longer climbs while you hardly lose anything on straights.

Cassette's width:
The 11/34 gear ratio cassette is the same width as a 10-speed mountain bike cassette. Because of the spider in umbrella shape, it also fits over a 10-speed mountain bike body.

• Number of individual components: 9
• Material: nickel-plated steel
• Spider: Aluminium
• Cogs on the cassette: 11-13-15-17-19-21-23-25-27-30-34t
• Weight according to Shimano: 335 gram

• For other gearing look at the Ultegra R8000 11 speed cassette.

Compatibility

This cassette is compatible with:
- Ultegra R8000 long cage derailleur (RD-R8000 GS, RD-R8050 GS)
- 105 R7000 long cage derailleur (RD-R7000 GS)

Assembly

Special tools for mounting
To mount this cassette you need specific tools. These can be found here. For a more detailed explanation and instructions on how to use these tools please refer to our blog on replacing a cassette.

Don't forget the assembly grease!
The lockring of your cassette can be well tightened, in some cases up to 40 Nm. To make removing the lockring in the future easier, we recommend lubricating it with a bit of assembly grease. You can find our selection of assembly greases here.

User tips

How often should I wash my bike? Regular washing will keep your bike in good nick. It ensures that the parts on your bike last longer so that you can enjoy cycling happiness for longer. How often you should wash your bike is largely dependent on what sort of weather conditions you ride in. Are you always out there, come rain or shine? Or are you strictly a fair-weather cyclist? It all has an influence on the degree of wear on bike parts, and some of us have to wash our bikes more regularly than others. Refer to the plan below as a general guideline:

October to March:
• Wash every 200 km
• Rinse after every ride
• Dry and lube the chain after every ride
• Let the bike dry at room temperature

April to September:
• Wash every 300 km
• Rinse after a ride in the rain
• Dry and lube the chain after rinsing or washing
• Let the bike dry at room temperature
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Reviews

Reviews

4.8 / 5
Average from 45 reviews
5
23 reviews
4
3 reviews
3
0 reviews
2
0 reviews
1
0 reviews

Most recent reviews

5 / 5

Super translation

- Alfred 19 March 2024

I would not have thought that the 11 to 34 sprocket on ultegra runs so wonderfully

Automatic translation

5 / 5

Super Kit

- Jacques 6 November 2023

Purchased as a kit with Ultegra derailleur and chain. Don't forget to fit the spacer washer before fitting the first sprockets on the freewheel body.

Automatic translation

5 / 5

Great product at great price

- Alessandro 25 August 2021

Perfect, hard to find on the net these sprocket boxes. Great price as well.

Automatic translation

5 / 5

The ideal mountain cassette

- Fabien 22 August 2021

Thanks to the 34x34, it's impossible to get stuck, and there's always a gear to turn your legs. The cassette has fewer holes at the top than the 11-32: 34-30-27-25-23 versus 32-28-25-22. You can keep the plate up to 27 with a good chain line for false flats. I keep the same chain length as with an 11-28 for racing, just adjust the derailleur tension screw. You just sacrifice the 12 and 14 teeth, which isn't a problem going downhill.

Pros & Cons

100% Shimano and Sram compatible
34x34 to go anywhere
Better mountain cassette than 11-32
Ultegra R8000 and medium clevis mandatory
Automatic translation

4 / 5

4 stars for soaring Shimano prices and lack of retail sprockets

- Frederic 19 August 2021

bought to compose a cassette special mountain with a 11x 28 to make a 14 x 34 well staged associated with a GRX 46 x 30 I can now make all the climbs with the train without asking me questions. I am an amateur of 54 years 1,92 cm 82 kg. cassette super reactive and fluid. 2 cassettes to make one is very expensive! Mr Shimano retail sprockets please! PS: rear derailleur medium clevis mandatory Bonne route

Pros & Cons

delivery
price
service
Shimano prices soaring
Automatic translation

5

Alfred, 19 March 2024

Super translation

I would not have thought that the 11 to 34 sprocket on ultegra runs so wonderfully

Automatic translation

5

Jacques, 6 November 2023

Super Kit

Purchased as a kit with Ultegra derailleur and chain. Don't forget to fit the spacer washer before fitting the first sprockets on the freewheel body.

Automatic translation

5

Alessandro, 25 August 2021

Great product at great price

Perfect, hard to find on the net these sprocket boxes. Great price as well.

Automatic translation

5

Fabien, 22 August 2021

The ideal mountain cassette

Thanks to the 34x34, it's impossible to get stuck, and there's always a gear to turn your legs. The cassette has fewer holes at the top than the 11-32: 34-30-27-25-23 versus 32-28-25-22. You can keep the plate up to 27 with a good chain line for false flats. I keep the same chain length as with an 11-28 for racing, just adjust the derailleur tension screw. You just sacrifice the 12 and 14 teeth, which isn't a problem going downhill.

  • 100% Shimano and Sram compatible
  • 34x34 to go anywhere
  • Better mountain cassette than 11-32
  • Ultegra R8000 and medium clevis mandatory
Automatic translation

4

Frederic, 19 August 2021

4 stars for soaring Shimano prices and lack of retail sprockets

bought to compose a cassette special mountain with a 11x 28 to make a 14 x 34 well staged associated with a GRX 46 x 30 I can now make all the climbs with the train without asking me questions. I am an amateur of 54 years 1,92 cm 82 kg. cassette super reactive and fluid. 2 cassettes to make one is very expensive! Mr Shimano retail sprockets please! PS: rear derailleur medium clevis mandatory Bonne route

  • delivery
  • price
  • service
  • Shimano prices soaring
Automatic translation

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Compare the products above
Shimano Ultegra HG-800 11 speed Shimano 105 R7000 Shimano Ultegra R8000 SRAM Force PG-1170
Shimano Ultegra HG-800 11 speed Shimano 105 R7000 Shimano Ultegra R8000 SRAM Force PG-1170
45 reviews 311 reviews 711 reviews 49 reviews
Bike Type Road bike / Gravel bike Road bike / Gravel bike Road bike / Gravel bike Road bike
Number of gears 11 speed 11 speed 11 speed 11 speed
Body Type SRAM Race 10/11 speed / Shimano Race HG 9-12 speed SRAM Race 10/11 speed / Shimano Race HG 9-12 speed SRAM Race 10/11 speed / Shimano Race HG 9-12 speed SRAM Race 10/11 speed / Shimano Race HG 9-12 speed
Cassette Ratio 11 / 34 11 / 28 / 11 / 30 / 11 / 32 / 11 / 34 / 12 / 25 / CS-R7000 11 / 25 / 11 / 28 / 11 / 30 / 11 / 32 / 11 / 34 / 12 / 25 / 14 / 28 / CS-R8000 11 / 25 / 11 / 26 / 11 / 28 / 11 / 32
Weight 337 grams (11-34T) 284 grams (11-28T) 251 grams (11-28T) 231 grams (11-28T)
What groupset do you have? Shimano Ultegra Shimano 105 Shimano Ultegra SRAM Force
68,61 From 48,11 From 66,56 76,81
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