If your brake caliper uses Hope RX4 or RX4+ pads (37mm wide), these will fit.
Gorilla Brakes Sintered Disc Brake Pads (37mm Wide) are precision-made for
Hope RX4 and RX4+ flat-mount calipers. Designed for riders who prioritise durability,
heat control, and consistent braking in all weather, this wider pad profile increases surface area
for improved wear life and stable performance across gravel, cyclocross, and road riding.
🔧 Compatibility
Direct replacement pads for the following Hope brake systems:
Pad Type
Brake Series
Caliper Model
Riding Discipline
RX4 37mm wide
Hope RX4
RX4
Road, Gravel, Cyclocross
RX4 37mm wide
Hope RX4
RX4+
Road, Gravel, Cyclocross
RX4 37mm wide
Hope RX4
RX4-SH / RX4-CX
Road, Gravel, Cyclocross
🔥 Compound: Sintered
The Gorilla Brakes sintered compound is engineered for maximum durability and consistent braking
under load. It maintains stable friction in wet, gritty, and variable conditions, making it well
suited to long rides, mixed terrain, and extended descents where reliability matters more than
ultra-quiet operation.
Feature
Benefit
Sintered metallic compound
Consistent braking in wet and dry conditions
37mm wide pad profile
Improved heat control and longer wear life
High durability
Reduced pad changes on long or abrasive rides
Stable friction at temperature
Reliable performance on sustained descents
All-weather tuning
Confidence across gravel, road, and CX conditions
Note: Sintered compounds may generate more noise than resin or organic pads, particularly when cold.
📦 What’s Included
1 × Pair of sintered disc brake pads (37mm wide, fits one caliper)
1 × Pad spring clip
Minimal, protective packaging
🌍 Ideal For
Gravel, cyclocross, and road riders using Hope RX4 or RX4+
Mixed terrain and all-weather riding
Long-distance rides where durability matters
Riders seeking stable braking and extended pad life
Gorilla Brakes is trusted by riders worldwide, with over 13,000 verified positive feedback ratings.
We also work closely with race teams and sponsored riders to validate performance in real-world conditions.
Not used but ready when I need to - bought through recommendation of the "Ribble Cyclist" on YouTube - when looking for alternatives to original fittings - he rates Gorilla very highly through actual usage. Great price.
Hi Steve,
Thanks for the kind reveiw, We noticed you purchased sintered which is a full metal compound and can be very noisy on brakes if not set up correctly especially if you have been running organic on the rotors. best suited compound for road and gravel are Semi-metalllic or Ceramic if you want quiet braking performance get in contact with us and we can upgrade you free of charge if you like
