Checking pickup availability...
Loading store availability...

Checking pickup availability...
Loading store availability...
RX4+ SL DOT Type Disc Brake Caliper
Flat Mount / Front / Blue
Loading store availability...
The Hope RX4+ DOT type brake caliper has been refreshed as the RX4+ SL. The RX4+ SL caliper retains a precision CNC-machined monobloc design that results in a stiffer caliper to give unrivaled feel and modulation. In addition, it now features a new bore cap that adopts the narrower design first introduced on the GR4 and TR4 to reduce overall caliper width and improve compatibility with a wider range of frames. It now also incorporates the bleed nipple design from the RX2, making bleeding simpler and cleaner. Together, these focused updates make the RX4+ SL more user-friendly while maintaining the powerful, reliable performance riders expect.
Check all technical specifications
© 2026 Sierra Bicycle Supply, 1380 Kleppe Lane Sparks, NV 89431 All rights reserved. Experience by Frengee
Your cart is currently empty.
Start ShoppingJoin our insider list. We’ll email your code and auto-apply it to your cart. *Discount taken at checkout. Cannot be combined with select price-restricted items. See cart for details. Bikes and sale items are excluded.
Tool was exactly how described and packaging was nice. It did take a few days to ship so unfortunately I didn’t receive it in time for the trip I ordered it for which is the reason for 3 stars but I received it the week after and it’s coming in handy.
size is big enough and clear simple layout. moved from garmin 850. I am very satisfied with wahoo!
Sierra is no joke, this is our 4th bike in the last 3 months and the process has been so easy, they are fair with pricing and never make it feel transactional! I won't be buying anywhere else!
You have copied the placement for the Product Page.
Go back to the App Embeds section, and in the Paypal Advanced Settings, paste the copied value into the Product Page field and click the 'Save' button in the top right corner.
To pay using pre-tax HSA/FSA funds, select Truemed at checkout.
For HSA/FSA reimbursement, pay with any method and look for Truemed on the confirmation screen.
Truemed is for qualified customers. Learn more at truemed.com/disclosures.