Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world

The GRX series offers premium performance at an incredible value, with thoughtful ergonomic designs and gravel-centric gearing for all manners of unpaved adventures. 


- GRX hydraulic disc brake STI's give you control, modulation and power with minimal effort in all riding conditions
- Raised hood head prevents hand misalignment and slippage
- Anti-slip texture and brake lever coating gives higher braking efficiency and reduces -fatigue on long rides
- Weight: 560g pair

Product specifications:

- SERIES: GRX 11-speed
- Color: Series color
- Average weight: 286g
- Bracket cover color: Standard
- Shifter type: DUAL CONTROL LEVER
- Shift lever:

- Road 11-speed
- Brake lever
- Brake hose (kit): SM-BH90-JK-SSR
- Hose joint: Straight
- Brake hose color (kit): Black
- Recommended brake caliper: BR-RX810
- Oil: SHIMANO Mineral
- Reach adjust
- Funnel bleeding
- Free stroke adjust
- Clamp band:
- Diameter (mm): 23.8-24.2

- Shifter lever body:
- Release: Resin & Steel
- Shift lever cable:
- Outer casing (Lever side): OT-SP41
- Outer casing (Rear derailleur side): OT-RS900

- Inner cable: Polymer-coated cable

Left shifter is 2-speed, right shifter is 11-speed

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.

Shimano GRX ST-RX810 11-Speed STI/Brake Lever Pair


Barcode: 4550170448820

Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component... Read more

£429.95 RRP £499.99SAVE 14%


Delivery Information

We have a range of delivery options on orders. Most importantly, if your order is over £50 then delivery is free!

All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped which will allow you to track it with Royal Mail or DPD.

In-stock orders placed by 4pm will be processed the same day.

Any items displaying "in-stock with supplier, despatched in 2-3 days" on the product page cannot be despatched the same day as they will be shipped to us from the supplier when you place your order.

Read on to discover the delivery options available to you on your order.

Delivery Services

Standard Tracked: All orders over £50 are eligible for free standard tracked delivery by Royal Mail. For orders under £50 there is a £2.99 charge. Orders sent using standard tracked are usually delivered in 2-3 days.

Priority Tracked: For £3.99 your order is sent by premium tracked delivery which gives a 1-2 day (including Saturdays) delivery timescale. This service is provided by Royal Mail who will usually deliver on Saturdays. Orders must be placed by 4pm.

Next Day Courier: If you require next-working-day delivery then this is provided by DPD and is £6.99. Orders must be placed by 3.30pm and be fully in-stock in order to be processed before our daily DPD collection.

Saturday Delivery: You can select Saturday delivery options from DPD at the checkout.

Bike Delivery: Bikes are always delivered by courier. After placing a bike order your bike is fully assembled and tested before being carefully boxed for shipping. Because of this build process it is not always possible to offer next-day delivery on a bike. Please do get in touch if you want to know a specific despatch day on any bike on our website. Call us on 01227 832582 or email

Returns Info

We offer a 30 day return period on our items. We ask that items are returned in their original packaging and in re-sellable condition. We do not pay returns postage.unless we have made an error with your order.

We cannot accept the return if the item is not correctly packaged and is damaged in transit during the return trip back to us.

    Please do not stick any tape or labels to the products branded outer packaging.

      If you require an exchange it is recommended that you re-order the correct size/item and return the item you do not wish to keep to us for a refund.

        Customer Reviews