Shimano GRX RX610 1x12 Wide Ratio Groupset

Shimano GRX 610 1x12-Speed Gravel Groupset

The Shimano GRX 610 1x12-Speed Groupset delivers the perfect balance of simplicity, performance, and reliability for riders who live for gravel adventures. Built on Shimano’s dedicated gravel platform, GRX 610 brings the innovations of the top-tier RX820 series to a more accessible level — with the same gravel-specific ergonomics, stable drivetrain, and hydraulic braking power that make GRX the benchmark for mixed-terrain riding.

With its 1x12 drivetrain, the GRX 610 offers a wide gear range and crisp shifting with fewer components to maintain. The single front chainring setup keeps things simple and efficient, while the Shadow RD+ clutch rear derailleur ensures a quiet, secure chain over rough surfaces. Designed to thrive on dirt, gravel, and adventure routes, GRX 610 1x12 gives you the confidence to go further and explore beyond.

Key Features & Specifications

• Crankset: Shimano GRX FC-RX610 – 1x12 configuration with 40T or 42T chainring options
• Cassette: Shimano Deore SLX CS-M7100 – 12-speed wide-range (10-45T or 10-51T) MICROSPLINE FITTING**
• Chain: Shimano CN-M7100 – 12-speed Hyperglide+ chain for smooth, reliable performance
• Rear Derailleur: Shimano GRX RD-RX820 – 12-speed Shadow RD+ with clutch for chain security
• Shift/Brake Levers: Shimano GRX ST-RX610 – 12-speed hydraulic STI levers (includes cables)
• Brakes: Shimano GRX BR-RX410 Flat Mount Hydraulic Disc Brakes – powerful, predictable stopping in all conditions

Why Choose Shimano GRX 610

• Simplified 1x12 drivetrain – clean, efficient, and low-maintenance setup
• Wide gear range – climb steep terrain and maintain speed on flats
• Gravel-specific ergonomics for maximum control and comfort
• Hydraulic disc braking for consistent stopping power on any surface
• Proven Shimano reliability with durable components built for real-world adventure

Shimano GRX 610 1x12 Gravel Groupset gives you the freedom to explore with confidence. Designed for modern gravel bikes, bikepacking, and adventure cycling, it combines performance, simplicity, and long-lasting durability — letting you focus on the ride, not the road ahead.

** It is possible to specify this groupset with an HG fitting cassette in either 11-51 or 11-46 options. Please select one of the SunRace cassettes in the cassette options.

DELIVERY

Delivery to mainland UK addresses are free for orders over £40. Except when you choose delivery to a third party (Click and Collect) there is a charge of £5.95 to cover some of the additional cost the couriers charge for this service. If you choose to collect from Fawkes warehouse there is no shipping charge.

There will an additional charge for deliveries to Highlands and Islands. 

RETURNS TO FAWKES

Whether it’s a jersey that doesn’t fit, or the colour is not quite right, sometimes you’ll need to return items to us.

If an item is 'as new' and has not been used or fitted in any way, you can return it to us by post within 90 days of delivery for a refund. Please ensure that the goods are returned in their original packaging and are in an unused condition.

Please click HERE to print and then complete the returns form and include it inside your parcel.

If you wish you can use our Royal Mail Returns service please follow the instructions on the link below to return your parcel to us.

Royal Mail Returns Service

Please pack the item carefully to avoid damaged during shipping.

Customers need to pay the cost of return delivery unless the item is faulty and this will be deducted from your refund, currently £3.95.

If your have a large item e.g. Child seat, Bike, trailer etc. please contact our customer service team at Guy@fawkes-cycles.co.uk to arrange the best way to return your item, the cost will be deducted from your refund.

You will not receive a refund for the retail value of any free or promotional items you are sent, and you will be charged if they are not returned.

UNWANTED ITEMS

If you change your mind on your purchase, you have a full 90 days to return it for a refund. All Goods must be unused, in a saleable condition and in their original packaging with all labels still attached.

Please pack the item carefully to avoid damaged during shipping.

There are some exclusions to our 90 day returns policy, which are detailed below:

Nutritional products or those with a best before date must be returned within 28 days*

Any customised items such as wheel builds cannot be returned*

GPS systems such as sports watches or cycle computers can only be returned if unregistered*

For hygiene reasons, any intimate garments such as facemasks, underwear and swimsuits can only be returned if the items are faulty.

*Unless faulty

If you wish to return your item for a refund, please follow the returns procedure above.

We try our best to process all refunds within 14 working days. We'll refund your item via your original payment method.

You will not receive a refund for the retail value of any free items you are sent, and Fawkes may charge you for this item if you fail to return it

FAULTY ITEMS

If you feel that your purchase has developed a fault, then please contact us with photographs of the issue before returning any goods - we may be able to solve your problem without you incurring any further inconvenience.

If you find a fault with your item, send it back to us and we'll take a look at it as soon as we can. Items sent back to us will undergo an inspection and it may be necessary to send the item away to the manufacturer to confirm the fault. If we confirm a manufacturing fault, we'll happily replace or refund it.

Please pack the item carefully to avoid damaged during shipping. 

Faulty items should be returned within a reasonable time and in a clean and dry condition. PLEASE NOTE, WE WILL NOT PROCESS DIRTY ITEMS.

Please enclose all your details and a covering note explaining the fault and any other useful details.

We'll try to get back to you within 14 working days of receipt of your parcel, although during busy periods this may take slightly longer.

Your statutory rights are not affected.

We reserve the right to recharge return carriage on items where no fault is identified.

Customer Service Email: Guy@Fawkes-Cycles.co.uk

Please contact us for our Payment & Security policy.