At Eurobike last year, Hope Tech introduced one of the most interesting upgrade options we’ve seen: Replacement hydraulic disc brake calipers for both Shimano and SRAM road groups.
Now, the Hope RX4 road disc brake calipers gain a flat mount variant with distinct front and rear versions since they don’t use any adapters. That means they’re only for 160mm rotors, a conscious decision because they say 160mm’s are a “more sensible size” since they dissipate heat better and will work better on long descents. The longer pad of their four-piston design also helps shed more heat faster.
The Shimano ones (shown) get larger pistons because their master cylinder is designed for their larger pistons. SRAM is smaller, so the pistons are smaller.
Available in April, post mount versions are available now. All six colors are represented. £95 for flat mount, £75 for the post mount we saw at Eurobike last fall along with the rest of their new road collection.