Hope RX4+ SL Caliper Complete - FMF+20 - DOT

For 2026, the RX4+ has been refreshed, becoming the RX4+ SL.

RX4+ SL Flatmount Front +20mm DOT Caliper – Integrated mount design to work with Flatmount Front Mount forks only, allows the use of a 180mm/160mm rotor dependent upon fork mount type*.

Key Features

• New bore cap design decreases overall width of the caliper for better frame compatibility
• Slimline 4 piston lightweight design
• Monobloc design creates a stiffer caliper reducing the fuzzy lever feel and brake pad rub
• Available in all Hope anodised colours
• Top entry pad fitting
• CNC machined from 2014 T6 aluminium

Compatible with:

• Sram Red eTap AXS
• Sram Red
• Sram Force eTap AXS
• Sram Force
• Sram Rival eTap AXS
• Sram Rival
• Sram Apex
• Sram S900

All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 and eBikes will incur a £25 delivery fee.

Free Delivery On Orders Over £199.99 - When you spend more than £199.99 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.

Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.

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