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Shimano

Shimano Ultegra CS-R8101 cassette, 12-speed

81.99 € savings
RRP 119 €
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Rating (34)
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4,9/5
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Shimano Ultegra CS-R8100 casssette

A sophisticated combination of 12-speed cassette gears provides maximum efficiency and acceleration performance in every situation. HYPERGLIDE+ technology ensures faster and smoother shifting even at maximum load.
Product features
HYPERGLIDE+ technology ensures faster and smoother shifting
The CS-R8101 cassette is compatible with both Di2 and mechanical shifting systems
Product details
Gears 12
Number of teeth 11-30: 11-12-13-14-15-16-17-19-21-24-27-30
11-34: 11-12-13-14-15-17-19-21-24-27-30-34
Nut Shimano HG
Weight 11-30: 291 g
11-34: 345 g
Material aluminium, steel, nickel finish
product ID 147844
Product rating  (34 ratings)
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oxyno oxyno • 22 november 2024 at 7:48
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SK Kazetu som vymenil na 105 sade za túto Ultegru kvôli povrchovej úprave a celkovému technickému riešeniu, úspora váhy je minimálne, ale páči sa mi viac ako 105. Funguje dobre, radenie je plynulé, samozrejme treba ho vedieť doladiť.

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22 november 2024 at 7:48
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prudak prudak • 10 March 2026 at 21:18
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SK Maximálna spokojnosť. Je to overená kvalita. proste Ultegra. Po 3 rokoch po očistení vyzerá stále ako nová. Maximálna spokojnosť. Meral som rozmer zubov s meradlom a po 2 rokoch je prakticky skoro totožná s novými hodnotami.

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10 March 2026 at 21:18
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jurajvalo jurajvalo • 14 october 2022 at 19:47
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SK Na novom biku bola 11-30 a tak som sa rozhodol pre vymenu za tuto kazetu. Zatial max spokojnost, hlavne na Kačin som bol za nu velmi vdacny 🤣

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14 october 2022 at 19:47
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tomie1990 tomie1990 • 3 June 2026 at 0:26
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HU Minőségi anyaghasználat. Tartósnak tűnik, de majd az idő eldönti. Egyelőre megvagyok vele elégedve.

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3 June 2026 at 0:26
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P-Peter82 P-Peter82 • 31 october 2024 at 7:21
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SK Kazetu som kúpil na trenažér. Takže čaká na chladné a daždivé alebo zasnežené dni.

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31 october 2024 at 7:21
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Matkough Matkough • 28 august 2023 at 9:28
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SK Skvelá kazeta, na Ultegru nie je o čom. (Volil by som ju aj na 105 sadu.)

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28 august 2023 at 9:28
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raduzp raduzp • 2 April 2026 at 13:15
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SK Hlavne lahsi prevod do kopcov oproti povodnej kazete 30-11

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2 April 2026 at 13:15
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Silvo65 Silvo65 • 17 April 2024 at 23:02
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SK Rýchle dodanie a produkt mi presne splnil očakávania..

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17 April 2024 at 23:02
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igor9 igor9 • 21 January 2024 at 21:09
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SK Výmena za identickú kazetu po najazdení km

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21 January 2024 at 21:09
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Pilif6577 Pilif6577 • 26 september 2024 at 12:04 •replyigor9
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SK Ahoj prosim ta kolko kilometrov si schopny najazdit na jednu kazetu. Viem, ze zavisi od udrzby a jazdneho stylu, ale tak priblizne. dakujem

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26 september 2024 at 12:04
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MarekSlamka MarekSlamka • 6 June 2023 at 20:34
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SK Kupil som ju na trenazer, funguje skvele

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6 June 2023 at 20:34
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antonfercik antonfercik • 12 July 2023 at 19:31 •replyMarekSlamka
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SK Ahoj Tono ja som kúpil nový bicykel a poprejdeni cca mi praska na 5 prevode a na 12 najmenšom vydáva niejake zvuky ako je to u Teba ďakujem

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12 July 2023 at 19:31
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igorbenuska igorbenuska • 13 october 2023 at 13:05 •replyantonfercik
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SK ahoj, ja mám to isté. nový bicykel, štrkoce to na 4 aj 5 pastorku a nikde inde. a je jedno či je v predu zaradená veľká, alebo malá píla. v servise to nevedeli vyhodnotiť, tak som objednal novú kazetu aj reťaz a uvidíme. kazetu aj tak potrebujem na trenažér a reťaz skôr či neskôr budem potrebovať tiež. uvidíme

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13 october 2023 at 13:05
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milankojs milankojs • 13 october 2023 at 13:18 •replyigorbenuska
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SK Ja mám presne taký istý problém. 5-6 pastorok cvaká a nejde nastaviť ani prehadzovač...

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13 october 2023 at 13:18
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dobryujoadamko dobryujoadamko • 20 March 2024 at 18:00 •replyantonfercik
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SK Zdravim Vas ...presne mam aj ja s tymto problemy... a sem tam ked zaradim na 8 tak nejde tak potichu a ked zaradim na 9 tak uz ide po tichu ..ale aj to co vsetci pisete ze to tak vydava nejake zvuky ... Vedel by niekto nato rozumne a dovodne odpovedat ? ze kde je chyba ?

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20 March 2024 at 18:00
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Marxdohnal Marxdohnal • 20 september 2024 at 21:01 •replydobryujoadamko
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SK Chalani, nejak ste vyriesili tento problem ? Ci stale to robí problem. Lebo nieco podobné mám.

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20 september 2024 at 21:01
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igorbenuska igorbenuska • 20 september 2024 at 23:19 •replyMarxdohnal
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SK Mam radenie ultegra Di2 a podarilo sa mi to vyriesit jemnym doladenim cez shimano aplikaciu. Na konkretnom pastorku som nasiel spravnu mikropolohu a je pokoj.

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20 september 2024 at 23:19
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Black_L Black_L • 28 February 2025 at 9:58 edit •replyantonfercik
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SK problém bude možno v kompatibilite, podľa návodu je CS-R8100 kompatibilné len s Di2
https://si.shimano.com/sk/pdfs/dm/RACS010/DM-RACS010-06-SLK.pdf

...hľadal som ďalej, a našiel som, že CS-R8101 je už kompatibilná aj s mechanikou aj s Di2.
Podľa katalógu sú odlišné niektoré pastorky medzi týmito dvoma modelmi, konkrétne 12z, 15z a celý blok 21z-34z.
https://si.shimano.com/sk/pdfs/ev/CS-R8100-4861/EV-CS-R8100-4861A.pdf

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28 February 2025 at 9:58 edit
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Roman98 Roman98 • 1 august 2025 at 18:26
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SK Ultegra, proste kvalitka za rozumnú cenu

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1 august 2025 at 18:26
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Marmas Marmas • 12 March 2025 at 9:41
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SK Nie je co vytknut.

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12 March 2025 at 9:41
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romanp romanp • 7 February 2024 at 17:32
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SK Shimano kvalita

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7 February 2024 at 17:32
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tokijo tokijo • 21 March 2024 at 22:03
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CS Funguje dobře

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21 March 2024 at 22:03
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Pepe14 Pepe14 • 12 august 2024 at 10:09
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CS Super. 😉

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12 august 2024 at 10:09
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janisko janisko • 28 April 2024 at 19:42
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SK Kvalita

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28 April 2024 at 19:42
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Koma80 Koma80 • 15 January 2024 at 8:14
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SK Kvalita

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15 January 2024 at 8:14
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RomanSulek RomanSulek • 13 october 2023 at 11:17
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SK super

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13 october 2023 at 11:17
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Decky Decky • 20 March 2023 at 14:59
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SK super

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20 March 2023 at 14:59
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miroslavturjap miroslavturjap • 30 July 2023 at 19:50
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CS ...

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30 July 2023 at 19:50
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Product questions
milankojs milankojs • 27 october 2022 at 9:42
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SK Zdravím, ak mám túto kazetu 11 - 30T na mojom bicykli a chcel by som 11-34T, tak stačí v aplikácii k prehadzovačke označiť kazetu 11-34T? Alebo je potrebné inak nastaviť prehazdovačku, prípadne dať dlhšiu reťaz? Prehadzovačka Shimano Ultegra Di2 RD-R8150 12 sp. cestná.
Ďakujem vopred za odpoveď.

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27 october 2022 at 9:42
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gronkjear gronkjear Customer support • 27 october 2022 at 11:32 •replymilankojs
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SK Dobry den,

urcite budete pri prechode na kazetu s vacsimi pastorkami potrebovat dlhsiu retaz.
Presny postup jej vymeny, volby vhodnej dlzky, prip. nastavenia B-skrutky na prehadzovacke najdete priamo v manuali od Shimana - https://si.shimano.com/en/pdfs/dm/RARD010/DM-RARD010-02-ENG.pdf. Ak by ste si nahodou nevedeli dat s nastavenim rady, tak nevahajte vyuzit sluzby niektoreho z nasich servisnych centier - https://www.mtbiker.sk/shop/informacie/servis.html.

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27 october 2022 at 11:32
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jurajvalo jurajvalo • 27 october 2022 at 12:19 •replygronkjear
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SK Menili mi priamo pri kupe z 11-30 na 11-34 a neviem o tom ze by sa nieco s retazou robilo.

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27 october 2022 at 12:19
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gronkjear gronkjear Customer support • 27 october 2022 at 13:25 •replyjurajvalo
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SK Dobry den,

napr. aj priamo v tom linku na servisny manual od Shimana je navod na zmeranie prsnej dlzky retaze - nahodit retaz na velky prevodnik a velky pastorok (mimo prehadzovaca a nasledne pridat 2-3 clanky retaze (vratane spojky) - cize samozrejme ak je novy najvacsi pastorok vacsi ako povodny, tak aj retaz musi byt dlhsia.

(Samozrejme - v ramci istych hranic - dokaze cely system fungovat aj nie so 100% idealnou dlzkou retaze, vypadnu tak len napr. niektore kombinacie prevodov, ale presnost radiaceho systemu to neovplyvni).

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27 october 2022 at 13:25
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jurajvalo jurajvalo • 27 october 2022 at 13:29 •replygronkjear
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SK Neviem, na fakture som clanky nemal. Ale je mozne ze ich tam priavali servisaci

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27 october 2022 at 13:29
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martinm66 martinm66 • 15 august 2023 at 7:08
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SK Ja mám na novom bicykli 12 kazetu na elektrickej sade ale je na jednom pastorku problém reťaz na 4 pastorku je dako hlučnejšia na ostatných ide tichúčko najviac to cítiť na veľkej píle. v čom je problém .

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15 august 2023 at 7:08
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gronkjear gronkjear Customer support • 17 august 2023 at 14:40 •replymartinm66
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SK Dobry den,

tazko povedat, resp. tazko takto nadialku identifikovat problem. Jedine ma napada skontrolovat, ci je kazeta zalozena spravne (t.j. ci niektore pastorky nie su ulozene na orech naopak).

Pripadne sa nevahajte s bicyklom zastavit/objednat u nas v servise a radi sa na problem pozrieme - https://www.mtbiker.sk/shop/informacie/servis.html.

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17 august 2023 at 14:40
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igorbenuska igorbenuska • 9 october 2023 at 11:30
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SK Dobrý deň. Na cestnom bicykli mám elektrickú sadu Ultegra Di2. Kazeta je CS-R8100, 11-34T. Môžem na trenažér osadiť kazetu aj so 105kovej rady (CS-R7100 kazeta, 12-kolo, 11-34T)?

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9 october 2023 at 11:30
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gronkjear gronkjear Customer support • 11 october 2023 at 18:11 •replyigorbenuska
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SK Dobry den,

jasne, nebude to problem, mozete pouzit aj kazetu z nizsej rady. Teoreticky je mozne, ze spozorujete o nieco pomalsie, prip. menej hladke radenie - predsalen spracovanie 105 kazety nie je take precizne ako pri Ultegre.

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11 october 2023 at 18:11
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mahony3 mahony3 • 21 June 2022 at 19:44
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SK Zdravim je potrebné na túto kazety mať nejaký iný orech alebo to dám kľudne aj na 11tkovy orech Shimano

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21 June 2022 at 19:44
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gronkjear gronkjear Customer support • 22 June 2022 at 13:43 edit •replymahony3
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SK Dobrý deň,

kazeta sadne na akýkoľvek 11-speed Shimano road orech, viď. napr. https://youtu.be/CYvl-SArrw0.

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22 June 2022 at 13:43 edit
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ppv ppv • 13 July 2022 at 21:00
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SK -poprosim info-je kazeta SH 12..kompatibilna so sadou Sram Force 12?
dakujem!

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13 July 2022 at 21:00
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gronkjear gronkjear Customer support • 15 July 2022 at 13:13 •replyppv
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SK Dobrý deň,

Shimano to samozrejme neodporúča, ale "in theory" by to malo fungovať - ale pozor, je potrebné použiť 12-speed Shimano reťaz, SRAM reťaz nespolupracuje so Shimanom v prípade 12-rýchlostných sád so 100%-nou presnosťou a spoľahlivosťou.

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15 July 2022 at 13:13
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boysy207 boysy207 • 21 november 2022 at 21:47 •replygronkjear
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SK A s kľukou Sram Force potom reťaz Shimano nemá problém?

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21 november 2022 at 21:47
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gronkjear gronkjear Customer support • 22 november 2022 at 14:36 •replyboysy207
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SK Dobry den,

pokial prevodnik na klukach je urceny a kompatibilny s 12-speed Shimano HG+ retazou, tak s tym problem nebude. Ak kompatibilny nie je, tak spominana retaz zial na zuby prevodnika nebude dosadat s absolutnou presnostou, resp. vobec (najma napr. kvoli uzsej spojke).

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22 november 2022 at 14:36
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pali1212 pali1212 • 23 January 2026 at 6:39
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Will this cartridge fit my HG nut? Thank you

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23 January 2026 at 6:39
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TerkaE TerkaE • 23 January 2026 at 7:19 •replypali1212
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SK Samozrejme, máte to uvedené aj v popise produktu.

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23 January 2026 at 7:19
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stefankrajcovic1122 stefankrajcovic1122 • 23 January 2026 at 12:12 •replypali1212
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SK Dobrý deň, áno bude sedieť.

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23 January 2026 at 12:12
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Indy9o Indy9o • 23 January 2026 at 16:31 •replypali1212
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SK ano

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23 January 2026 at 16:31
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gronkjear gronkjear Customer support • 24 January 2026 at 12:01 •replypali1212
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SK Len pre istotu doplním ešte ostatných - áno, kazeta sedí na cestné HG orechy, na MTB verzie HG orechov samozrejme však už nie.

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24 January 2026 at 12:01
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WARNING
For installation, adjustment and replacement information not found in the user's manual, consult the place of purchase or a distributor. A dealer's manual intended for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to read this "user's manual" thoroughly before use, follow it for correct use, and save it so that you can refer to it at any time.
The following instructions should always be followed in order to prevent personal injury and physical damage to equipment and the surrounding area. The instructions are classified according to the degree of danger or damage that may occur if the product is used incorrectly.
DANGER - Failure to follow instructions will result in death or serious injury.
WARNING - Failure to follow instructions could result in death or serious injury.
CAUTION - Failure to follow instructions could result in personal injury or physical damage to equipment and the surrounding area.

WARNING
- Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.

Shimano
Road Shimano
Japanese manufacturer produces road, mountain, gravel, trekking, BMX and e-bike groupsets. They also offer a whole series of components and apparel. Their range goes from wheels, footwear, eyewear to backpacks. Shimano is a traditional manufacturer known for their quality work, which is why they are the favourite choice of amateurs and professionals.
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