scheduleOur stores and their opening hours
Localisation
home navigate_next Components navigate_next Cranksets and chainrings navigate_next Road and gravel navigate_next Shimano GRX FC-RX820-1 HTII cranks, 1x12, 42T
Shimano

Shimano GRX FC-RX820-1 HTII cranks, 1x12, 42T

Version
-11%
169 € -11%
RRP 229 €
Found a better price?
Add to list contact_supportProduct question
replay
Extended return option up to 100 days More info
delivery_truck_speed
Free shipping
Rating (1)
Show all reviews
5/5

Shimano GRX FC-RX820-1 HTII cranks

Gravel cycling has its roots in simplicity, inclusiveness and curiosity . Everyone from beginners to grizzled veterans rely on Shimano GRX, the first gravel-specific set - for smooth shifting, reliable braking and exceptional off-road comfort.
Product details
Groupset Shimano GRX
Gears 1x12
Crank length 170 mm, 172.5 mm, 175 mm
Material Aluminium alloy
Chainring 42T
Axis type 24 mm (Shimano/FSA...)
Technical designation FC-RX820-1-12
Technology HOLLOWTECH II
Chain line 49.7 mm
Q-Factor 151 mm
Spacing 110 mm
Recommended chain 12-speed HG
Package contents right crank with axle and chainring, left crank, nut
Weight 667 g (172.5 mm, 42T)
product ID 244670
Product rating  (1 rating)
5/5
(1 rating)
(1 rating)
(0 ratings)
(0 ratings)
(0 ratings)
(0 ratings)
How do you rate the product?
Add a review
Help others, earn points and shop better prices thanks to the loyalty program
Reviews verified Verified purchases
itm itm • 7 July 2025 at 11:58
thumb_up0thumb_down

Variant Shimano GRX FC-RX820-1 HTII kľuky, 1x12, 40T

7 July 2025 at 11:58
thumb_up0thumb_down
Add rating
Product questions
fepa fepa • 19 January 2026 at 18:21 edit
thumb_up0thumb_down

Variant Shimano GRX FC-RX820-1 HTII kľuky, 1x12, 42T

SK Zdravim, tento jednoprevodník pasuje len na holowtech ll? Mám stred lisovaný (pressfit).
Ďakujem.

Translate by GoogleShow the original
19 January 2026 at 18:21 edit
thumb_up0thumb_down
gronkjear gronkjear Customer support • 20 January 2026 at 18:27 •replyfepa
thumb_up0thumb_down

SK Dobrý deň, aj PressFit stredy môžiu byť vhodné na Hollowtech II kľuky - Hollowtech II nie je označenie stredu, ale typu osky kľúk.
Pokiaľ máte stred určený pre 24 mm osky kľúk, tak kľuky budú sedieť.

Translate by GoogleShow the original
20 January 2026 at 18:27
thumb_up0thumb_down
Vasil23 Vasil23 • 26 April 2026 at 11:19
thumb_up0thumb_down

Variant Shimano GRX FC-RX820-1 HTII kľuky, 1x12, 40T

SK Dobrý deň, potreboval by som tieto kľuky v 42z a dĺžke 170mm, budete ich mat v ponuke?

Translate by GoogleShow the original
26 April 2026 at 11:19
thumb_up0thumb_down
Matej_S Matej_S Customer support • 27 April 2026 at 13:56 •replyVasil23
thumb_up0thumb_down

SK Dobry den, napisal som nasmu dodavatelovi a ozveme sa Vam mailom.

Translate by GoogleShow the original
27 April 2026 at 13:56
thumb_up0thumb_down
lubosfranige lubosfranige • 21 July 2024 at 23:47
thumb_up0thumb_down

Variant Shimano GRX FC-RX820-1 HTII kľuky, 1x12, 40T

SK Dobrý deň
Potreboval by som 38z Prevodník kompatibilný s týmito kľukami.
Ďakujem.

Translate by GoogleShow the original
21 July 2024 at 23:47
thumb_up0thumb_down
gronkjear gronkjear Customer support • 22 July 2024 at 10:22 •replylubosfranige
thumb_up0thumb_down

SK Dobry den,

zial 38T mame dostupny len od Wolf Tooth - momentalne vsak uplne nedostupny - https://www.mtbiker.sk/shop/komponenty/kluky-a-prevodniky/prevodniky/wolf-tooth-110-bcd-4-bolt-prevodnik-pre-shimano-grx-38t-p173898.html.

Translate by GoogleShow the original
22 July 2024 at 10:22
thumb_up0thumb_down
dominiknagy2002 dominiknagy2002 • 30 May 2025 at 8:33
thumb_up0thumb_down

Variant Shimano GRX FC-RX820-1 HTII kľuky, 1x12, 40T

SK Dobrý deň.
Bolo by možné na tieto kluky namontovať 38z prevodník z kľúk RX610?

Translate by GoogleShow the original
30 May 2025 at 8:33
thumb_up0thumb_down
gronkjear gronkjear Customer support • 30 May 2025 at 13:09 •replydominiknagy2002
thumb_up1thumb_down

SK Dobry den,

ano, prevodniky su navzajom kompatibilne.

Translate by GoogleShow the original
30 May 2025 at 13:09
thumb_up1thumb_down

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 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 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 your 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 and do not 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.
Contact information
Shopping FAQ

All the answers to questions about delivery, payment, security, returns, warranty and much else.

Similar products
You can try these searches
Road cranks and chainrings, Shimano
You may find these products complementary
All products from the category
Road cassettes
Show all
Clipless road bike pedals
Show all
Bottom bracket tools and bottom bracket cup wre...
Show all
Bike chains
Show all
Road cycling shoes
Show all
Why shop with us?
Find out what makes us special
1 500 000+ orders

We are the largest cycling e-shop in Slovakia, verified by 100,000+ customers.

Unique customer service

We are available via e-mail, online chat, phone or in person at our MTBIKER stores.

We actively support the cycling community in Slovakia

Thanks to your order we can support cycling development.

Secure payment methods

The payment process is safe and we offer you a wide range of options.

Loyalty program

We will reward you for your purchase and also for quality contributions in the MTBIKER forum, e-shop, trips and photo gallery.

MTBIKER centre and showroom

Visit our store with a pump-track and trail access or our showroom in a historical bulding in central Bratislava.

navigate_beforeprevious navigate_nextďalší
keyboard_arrow_up