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Shimano

Shimano GRX FC-RX810 HT II crankset, 2x11, 48/31T, without bearings

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159 € - 209 € savings
RRP 239 €
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Shimano GRX FC-RX810 HT II cranks

Shimano GRX stands out from the rest of the world of similar components thanks to its specific ergonomics, optimized gears, great reliability and quiet operation of the shifting system. This is not an elaborate set of road components. It represents a view of how cyclists want to explore their world. GRX is a challenge to find new places and experiences that strengthen us all.
Product features
Hollowtech II cranks with a solid axle designed for 11-speed shifting systems
An optimal combination and a wider range of gears suitable for different terrains and driving styles
Product details
Groupset Shimano GRX
Gears 2x11
Crank length 172.5 mm, 175 mm
Technologies Hollowtech II, HG-EV
Frame width 68/70 mm
Number of teeth 48/31T
Q-factor 151 mm
Chain line 47 mm
Derailleur spacing 110/80 mm
Adv. the middle. composition SM-BBR60 (Thread), SM-BB72 (Press Fit)
product ID 87270
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Firemann9 Firemann9 • 7 august 2024 at 22:11
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

Satisfaction, one less tooth on the small one is sometimes a relief against the old ones.. tough guys are still great

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7 august 2024 at 22:11
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Wlado Wlado • 1 January 2026 at 12:18
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

I know what I bought, the correctness of my decision has been confirmed. Thank you.

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1 January 2026 at 12:18
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StanislavH87 StanislavH87 • 26 March 2023 at 22:49
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

The change compared to the GRX600 is the two teeth.

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26 March 2023 at 22:49
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pavelko pavelko • 22 May 2023 at 7:25
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

Fixed cranks for gravel

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22 May 2023 at 7:25
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Product questions
tomasgvizd tomasgvizd • 12 January 2023 at 6:48 edit
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

Good morning, I want to ask what bottom bracket I should put with these bolts on my Cannondale Topstone carbon 5 bike and in the technical specifications it says bottom bracket: “Cannondale BB30”
I was wondering if I would have to change the chain (it's almost new) since I now have a 46/30 chainring?
Thank you very much.

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12 January 2023 at 6:48 edit
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gronkjear gronkjear Customer support • 12 January 2023 at 12:02 •replytomasgvizd
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SK Dobry den,

mal by sVam sadnut niektory z adpaterov urcenych pre BB30 ramy a Hollowtech II klukz, napr.: https://www.mtbiker.sk/shop/komponenty/stredove-zlozenia/bb30/mortop-bb3024-adapter-pre-osky-shimano-bb30-road.html#77679.

Dlzka retaze - ak mate teraz retaz s urcitou rezervou, t.j. je o nieco dlhsia, tak ju nebude potrebne menit. Ak vsak mate uz teraz retaz s dlzkou "nadoraz", tak zial 1-2 clanky navyse budu potrebne.

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12 January 2023 at 12:02
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tomasgvizd tomasgvizd • 12 January 2023 at 12:16 •replygronkjear
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SK Dobry,
dakujem pekne za info. A nebude jednoduchsie tam dat rovno komplet novy stred? Len sa laicky pytam.
Dakujem.

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12 January 2023 at 12:16
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gronkjear gronkjear Customer support • 12 January 2023 at 12:37 •replytomasgvizd
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SK Dobry den,

ake mate na mysli komplet stredove zlozenie? Klasicke BSA misky vhodne nie su, maju odlisny priemer, resp. ram nedisponuje zavitmi.

Prip. sadne aj takyto adapter - https://www.mtbiker.sk/shop/komponenty/stredove-zlozenia/bb30/fsa-mtb-m3-42x68-al.html. (Na obrazku su znazornene aj potrebne rozmery ramu - skuste si pripadne pred kupou dane parametre premerat, aby ste mali absolutnu istotu)

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12 January 2023 at 12:37
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tomasgvizd tomasgvizd • 3 February 2023 at 14:12 •replygronkjear
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SK Dobry den,
zasa vas idem otravovat a sice, zacalo mi pukat stredove zlozenie. Rozmyslal som nad tym, co ste mi pisali vyssie a meral som sirku a je to asi 78mm. Nedalo by sa pouzit toto zlozenie DUB pre BB30?
https://www.mtbiker.sk/shop/komponenty/stredove-zlozenia/bb30/sram-bb-dub-bb30-mtb83-ai-stredove-zlozenie.html

Alebo pouzit zavitovu redukciu a potom dat klasicke BSA stredove zlozenie. Len neviem ci sa v mojej sirke vyraba
https://www.mtbiker.sk/shop/komponenty/stredove-zlozenia/bb30/fsa-zavitova-redukcia-pre-ram-bb-30-73mm.html

Alebo pouzit uplnu chutovku a sice toto
https://www.mtbiker.sk/shop/komponenty/stredove-zlozenia/bb30/kogel-keramicke-stredove-zlozenie-bb30a-24-gxp-road-cannondale.html

Dakujem pekne a pardon, ze znovu otravujem

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3 February 2023 at 14:12
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gronkjear gronkjear Customer support • 3 February 2023 at 15:57 •replytomasgvizd
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SK Dobry den,

Vas Cannondale ma podla specifikacie vyrobcu prave asymetricky typ stredoveho zlozenia BB30A - spominana redukcia tak sediet s najvacsou pravdepodobnosotu nebude, tak ako je aj pisane v jej popise.

DUB stred s tymito klukami kompatibilny nie je, je urceny pre klusy s osou s vacsim priemerom - sediet do takehoto stredu budu len DUB kluky.

Kogel keramicke loziska su uz samozrejme uplne iny level, je to urcite zaujimava alternativa

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3 February 2023 at 15:57
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tomasgvizd tomasgvizd • 3 February 2023 at 21:28 •replygronkjear
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SK Dakujem pekne za odpovede a tie keramiky by mi tam pasovali?
Keby nahodou 😀

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3 February 2023 at 21:28
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gronkjear gronkjear Customer support • 6 February 2023 at 11:55 •replytomasgvizd
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SK Ano, stred je urceny pre asymetricke stredove domceky BB30A ake pouziva na niektorych svojich karbonovych ramoch aj Cannondale.

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6 February 2023 at 11:55
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tomasgvizd tomasgvizd • 6 February 2023 at 12:44 •replygronkjear
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SK Dakujem pekne

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6 February 2023 at 12:44
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drahomir1 drahomir1 • 5 september 2023 at 21:27
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Dobrý deň, prosím preverte u dodávateľa , dĺžka kľuky 175 a prevodníky 52/36 ak by bolo možné. Uvažujem aj nad watmetrom do ľavej kľuky . Nejako pospájať aby bola čo lepšia cena.

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5 september 2023 at 21:27
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gronkjear gronkjear Customer support • 6 september 2023 at 16:28 •replydrahomir1
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SK Dobry den,

RX-810 kluky su dostupne fabricky u vyrobcu len s prevodnikmi 48/31 - https://bike.shimano.com/en-EU/product/component/grx-di2/FC-RX810-2.html, 175mm dlzka dostupna ihned k objednaniu s dodanim do 5 pracovnych dni.

Powermeter - https://www.mtbiker.sk/shop/komponenty/wattmetre/4iiii-precision-3d-gen3-lava-kluka-s-wattmetrom-shimano-grx810.html - zial 175mm aktualne nedostupny. Dostupny je vsak Precision 3+ variant - https://www.mtbiker.sk/shop/komponenty/wattmetre/4iiii-shimano-grx810-precision-3.html.

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6 september 2023 at 16:28
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cardiobj cardiobj • 31 october 2025 at 9:06
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Dobrý den. Chcem sa spytat, ci mozem pouzit lavu kluku z Ultegry R8000 (kedze mam na nej 4iiii), samozrejme rovnaka dlzka. Treba nejake este podlozky? Ďakujem.

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31 october 2025 at 9:06
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mtbiker_info680 mtbiker_info680 • 31 october 2025 at 9:42 •replycardiobj
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CS Dobrý den,
z technického hlediska není problém kliku použít. Neměla by se tam přidávat žádná podložka a nic podobného. Jediný rozdíl je esteticky.

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31 october 2025 at 9:42
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gronkjear gronkjear Customer support • 31 october 2025 at 16:04 •replymtbiker_info680
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SK ..a v q-factore, kluka bude mierne dalej od osi bicykla (cca. 1.5 mm).

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31 october 2025 at 16:04
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takac takac • 31 July 2021 at 19:57
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

Hello, my housing is 68 mm wide and the thread diameter is 34.8 mm, so it's BSA if I'm not mistaken. Can you recommend a middle one? Or which ones can I choose from?

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31 July 2021 at 19:57
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gronkjear gronkjear Customer support • 31 July 2021 at 23:23 •replytakac
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SK Dobrý deň prajem,

podľa špecifikácie výrobcu bude sedieť akékoľvek stredové zloženie určené pre 24 mm Hollowtech II osky.

Aktuálne sú so závitovými BSA miskami dostupné napr.:
- https://www.mtbiker.sk/shop/komponenty/stredove-zlozenia/misky-hollowtech-ii-gxp/sting-stredove-zlozenie-pre-shimano.html
- https://www.mtbiker.sk/shop/komponenty/stredove-zlozenia/misky-hollowtech-ii-gxp/kcnc-stredove-zlozenie-bsa-68-road-24mm.html
- https://www.mtbiker.sk/shop/komponenty/stredove-zlozenia/misky-hollowtech-ii-gxp/mortop-bb1s-stredove-zlozenie-pre-kluky-s-24mm-osou.html

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31 July 2021 at 23:23
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0hnutaa_paetka 0hnutaa_paetka • 16 august 2025 at 10:24
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Zdravím,
dajú sa závity na prevodníky nejak opraviť, ako sa dajú závity na pedále? Na jednom závite pre ten menší prevodník som šrób dotiahol moc nasilu.

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16 august 2025 at 10:24
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gronkjear gronkjear Customer support • 18 august 2025 at 14:32 •reply0hnutaa_paetka
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SK Dobry den,

zalezi to od miery poskodnie - niekedy je mozne strhnuty zavit opravit zavitnikom, niekedy jepotrebne instalovat vlozku, a zial niekedy je kluka jedine cela na vymenu.
Vieme sa samozrejme na dany problem pozriet aj priamo u nas - https://www.mtbiker.sk/shop/informacie/servis.html.

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18 august 2025 at 14:32
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ezik ezik • 1 July 2024 at 10:24
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Dobrý deň, je možné týmito kĺukami nahradiť kĺuky 105 (rada 7000, 2x12, prevodníky 50/34)?
Bude sedieť reťazová linka / prešmykač? Ďakujem. EG

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1 July 2024 at 10:24
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gronkjear gronkjear Customer support • 1 July 2024 at 15:01 •replyezik
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SK Dobry den,

zial priamo nie, GRX maju vacsiu retazovu linku (47 mm vs. 43.5 mm) a rovnako aj o 5 mm sirsi q-factor. Odporucame k nim urcite zakupit GRX presmykac - https://www.mtbiker.sk/shop/komponenty/presmykace/cestne/shimano-grx-fd-rx810-2x11-presmyk-na-navarku-p87362.html.

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1 July 2024 at 15:01
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takac takac • 29 July 2021 at 22:39
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Ahoj, aké stredové zloženie potrebujem k Shimano stredu GRX RX810? Môžete mi odporučiť?

Ďakujem

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29 July 2021 at 22:39
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jaroslavf jaroslavf Customer support • 30 July 2021 at 6:13 •replytakac
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SK Dobrý deň,

Používajú pre pre tieto kľuky stredy Hollowtech II a záleží aký máte domček v ráme (pressfit/BSA)

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30 July 2021 at 6:13
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23intros 23intros • 24 July 2022 at 10:55
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Dobry
Chcem vymeniť kluky shimano 105 7000 budú mi tam pasovať tieto
Ďakujem

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24 July 2022 at 10:55
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gronkjear gronkjear Customer support • 26 July 2022 at 15:36 •reply23intros
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SK Dobrý deň,

áno, kľuky budú bez problémov sedieť.

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26 July 2022 at 15:36
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palokratochvila palokratochvila • 6 november 2022 at 11:55
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Zdravim
Budu kluky fungovat aj s prešmykačom 105 R7000 ?
Dakujem

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6 november 2022 at 11:55
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jaroslavf jaroslavf Customer support • 7 november 2022 at 11:59 •replypalokratochvila
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SK Dobrý deň,

Kapacita (tzn. rozdiel medzi malým a veľkým prevodníkom) je u cestných Shimano prešmykov 16 zubov. Tuto je rozdiel 17 zubov a oficiálne prešmyk tento rozsah nezvládne. Reálne to možno prešmyk zvládne ale nemáme to vyskúšané a nevieme to potvrdiť. Keď tak skúste pozrieť fóra (napr. aj naše) či túto kombináciu niekto nemá overenú.

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7 november 2022 at 11:59
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palokratochvila palokratochvila • 7 november 2022 at 12:02 •replyjaroslavf
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SK Dakujem za odpoveď
Už som objednal aj prešmyk. Vyskušam to so 105 R7000 a ak to pojde napíšem echo.
A GRX vratim

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7 november 2022 at 12:02
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Driver121 Driver121 • 27 March 2021 at 21:58
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Dobrý deň dajú sa použiť aj na systém 2x10 s grx 400 prehadzovackou ?

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27 March 2021 at 21:58
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jaroslavf jaroslavf Customer support • 30 March 2021 at 10:02 •replyDriver121
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SK Dobrý deň,

Podľa špecifikácií výrobcu to nebude možné - kapacita prehadzovačky RD-RX400 nie je prispôsobená na rozdiel 17 zubov u prevodníkov ako to majú tieto kľuky. Teoreticky by to ale mohlo fungovať no neviem to na 100% potvrdiť.

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30 March 2021 at 10:02
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Driver121 Driver121 • 30 March 2021 at 10:16 •replyjaroslavf
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SK Dobrý deň, ďakujem za odpoveď ,keby zmením aj predný presmykač na grx 810 a len vzadzu zostane prehadzovačka grx 400 10 speed tak aj tak jej to bude vadiť ? resp viete mi poradiť nejaké kluky s prevodníkmi 48/32 ?

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30 March 2021 at 10:16
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jaroslavf jaroslavf Customer support • 8 April 2021 at 8:36 •replyDriver121
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SK Dobrý deň,

To nebude stačiť, "problémom" je prehadzovačka ktorá je pri 11 rýchlostnej verzii (z ktorej sú tieto kľuky) s väčšou kapacitou než u 10 rýchlostnej verzie. Možno to bude bez problémom fungovať ale my to nemáme vyskúšané a výrobca to uvádza ako nekompatibilné a odporúčiť Vám to z našej strany nemôžme.
Kľuky s prevodníkmi 48/32 sú momentálne dostupné iba tieto karbónové https://www.mtbiker.sk/shop/komponenty/kluky-a-prevodniky/cestne/fsa-kluky-k-force-modular-386evo-48-32-175mm-2x10-11.html

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8 April 2021 at 8:36
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Driver121 Driver121 • 11 April 2021 at 22:04 •replyjaroslavf
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SK Jasné chápem a ďakujem za odpoveď 😉

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11 April 2021 at 22:04
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szlavo szlavo • 19 June 2026 at 13:57
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Ahojte da sa na Shimano GRX FC-RX820 48/31T dať kryt na veľký prevodník (chainguard)?

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19 June 2026 at 13:57
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kuko2343 kuko2343 • 1 november 2022 at 21:43
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Dobrý deň môžem tieto kľuky použiť na bicykel Giant revolt advancet 2 2022?

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1 november 2022 at 21:43
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0hnutaa_paetka 0hnutaa_paetka • 28 July 2023 at 9:33 edit
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Variant Shimano GRX FC-RX810 HT II kľuky, 2x11, 48/31T, bez ložiska

SK Dobrý deň, dá sa kúpiť na tieto kľuky väčší prevodník, ako 48z?

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28 July 2023 at 9:33 edit
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WARNING
For assistance with installation, adjustment, and replacement of products not found in the user's manual, please 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 carefully read this "user's manual" before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following instructions should always be followed in order to prevent personal injury, physical damage to equipment and damage to the surroundings. 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 the instructions will result in death or serious injury.
WARNING - Failure to follow the instructions could result in death or serious injury.
CAUTION - Failure to follow the instructions could result in personal injury or physical damage to equipment and surroundings.

WARNING:
Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.
Before riding the bicycle, check that the crank arms are not cracked. If there are cracks, the crank arm may break and you may fall off the bicycle.
Be careful that parts of your clothing do not get caught in the chain while riding. Otherwise, you may fall off the bicycle.

CAUTION:
Be careful not to touch the teeth of the sprockets. There is a risk of injury.

Shimano
Road and gravel 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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