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Shimano Ultegra R8000 HG800 11x34 road and mountain bike cassette - ICSHG8001111134

Voir les avis clients Average rating: 4.9 out of 5. Based on 78 reviews

11-34 (CS-HG800)

I choose my options

Shelving

Speed compatibility

MPN : ICSHG8001111134 | EAN : 4524667768838 | Ref : 18529700001
€78.90
Price : €109.08
In stock
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Based on 78 reviews

Show reviews

Shimano Ultegra R8000 HG800 11x34 road and mountain bike cassette - ICSHG8001111134

More details In stock

Shimano Ultegra R8000 HG800 11x34 road and mountain bike cassette - ICSHG8001111134

€78.90
Our advice

A new 11-34 gear ratio for the Ultegra R8000 cassette, now even more versatile!

Denis M.

A former racer with a keen eye for equipment

The Ultegra CS-HG800 11-34-toothShimano is an 11-speed cassette designed for cyclists looking for a wide gear range without compromising on the quality of gear changes. Compatible with 11-speed Shimano road groupsets, it offers excellent versatility for tackling hilly routes, long climbs and endurance rides. Thanks to Hyperglide technology, gear changes remain smooth, fast and precise, even under load.

Particularly popular for its wide gear range, this cassette features an 11-tooth small sprocket for fast riding on the flat and a 34-tooth large sprocket to tackle the most demanding climbs. Its optimised design ensures an excellent balance between weight, stiffness and durability.

Key features

  • Genuine Ultegra 11-speed Shimano cassette
  • Wide gear range: 11–34 teeth
  • Hyperglide technology for smooth gear changes
  • Ideal for mountain biking and endurance riding
  • Compatible with road, gravel and certain 11-speed MTB set-ups
  • Excellent durability of the teeth
  • Lightweight construction with aluminium sprocket cage
  • Compatible with 11-speed Shimano/SRAM freehub bodies

Technical specifications

  • Part number: ICSHG8001111134
  • Model: CS-HG800
  • Number of speeds: 11
  • Tooth count: 11-13-15-17-19-21-23-25-27-30-34
  • Technology: Hyperglide (HG)
  • Materials: steel and aluminium
  • Use: road, endurance, gravel
  • Compatibility: 11-speed drivetrains Shimano

Shelving 11-34
Speed compatibility 11v
EAN 4524667768838
Supplier reference ICSHG8001111134

Customer reviews

Average rating: 4.9 out of 5

Based on 78 reviews

Show attestation (opens in a new window)
  • Rated 5 out of 5 Christophe C.

    Published Nov 06, 2026 at 11:27 pm Order date: Oct 21, 2026 Original language: French (Translated review)

    As described

  • Rated 4 out of 5 Jean-Marie M.

    Published Oct 19, 2026 at 10:50 am Order date: Oct 05, 2026 Original language: French (Translated review)

    Perfect

  • Rated 5 out of 5 SAMBARDIER H.

    Published Aug 20, 2026 at 06:08 pm Order date: Aug 08, 2026 Original language: French (Translated review)

    In line with my expectations. Perfect

  • Rated 5 out of 5 Jean marc P.

    Published Jun 29, 2026 at 05:40 pm Order date: Jun 19, 2026 Original language: French (Translated review)

    In accordance with my search

  • Rated 5 out of 5 Juan S.

    Published Jun 15, 2026 at 09:05 pm Order date: Jun 04, 2026 Original language: French (Translated review)

    Gear ratio that allows you to go everywhere.

  • Rated 5 out of 5 Gilles G.

    Published May 16, 2026 at 01:38 pm Order date: May 03, 2026 Original language: French (Translated review)

    Not installed yet

  • Rated 5 out of 5 Mathéo F.

    Published May 02, 2026 at 06:12 pm Order date: Apr 21, 2026 Original language: French (Translated review)

    Perfect

  • Rated 5 out of 5 Stephane F.

    Published Mar 30, 2026 at 09:06 pm Order date: Mar 19, 2026 Original language: French (Translated review)

    Very good for the muddy mountain use of the East, almost 3 times cheaper than in stores. TTB

  • Rated 5 out of 5 Lionel K.

    Published Mar 09, 2026 at 08:03 pm Order date: Feb 26, 2026 Original language: French (Translated review)

    Order received quickly. It's serious.

  • Rated 5 out of 5 Jean paul h.

    Published Jan 31, 2026 at 03:59 am Order date: Jan 19, 2026 Original language: French (Translated review)

    Very good advice before ordering, the products are excellent

10 reviews shown out of 78

Yes, the CS-HG800 is fully compatible with Shimano ’s 105, Ultegra and Dura-Ace groupsets, whether mechanical or Di2, in 11-speed configurations.

Yes, the RD-R7000 GS derailleur is designed to accommodate a cassette with up to 34 teeth, making it an ideal combination.

Yes, the 34-tooth sprocket significantly reduces the effort required on long climbs and steep gradients.

Yes, many gravel bikes fitted with 11-speed Shimano drivetrains use this cassette to benefit from its great versatility.

An 11-speed Shimano chain, such as the HG601, HG701 or HG901 models, is recommended to ensure optimal performance.


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