Hello everyone,
I own a Grizl AL with a GRX400 groupset. I find the braking power to be really weak. The weight of the bike might play a role, but I honestly think the brakes are just bad.
In your opinion, how can I improve the braking power? Would changing the calipers make a difference? I’d prefer to avoid upgrading the shifters.
Thanks in advance!
by largocity
8 Comments
If you have bed in the brakes, the next best upgrade would probably be a 180mm rotor in the front or front and back.
Have a think whether you had accidentally contaminated pads with an oil or chain lube. GRX400 are solid brakes, it’s not like they offer 50% of stopping power of GRX800s.
Definitely try to identify whether both front and rear brakes are bad or only one of it.
Do you use Shimano brake pads?
Make sure to check if a caliper leaks mineral oil. Had this with my GR-RX812, could not figure out what was the root cause of squeaking and poor braking power for nearly a year. Until I discovered a leak in the caliper.
Is it a new bike? If yes, you need to bed in the brake pads: https://www.bikeradar.com/advice/workshop/how-to-bed-in-new-disc-brake-pads
plenty of power on my alu gravel bike with GRX400, no much difference with Ultegra 8100 ones
How are you finding the x 2 loooks real smart, sorry to go off topic thanks
how many kms on the bike ? how recently is the brake fluid serviced / changed ? what is the status of the rotors, are they clean? how about the pads, are they having sufficiency thickness ?
all these things contribute to the braking performance so, without the right info, how are the random people on net being able to answer your question? take the bike to LBS, if you arent able to inspect yourself, and have the parts inspected and see what is their take
Not certain but those look like deore rotors, so you could upgrade those? I’ve ran deore up to ultegra, the difference is noticable
Chuck in resin pads. Cheaper spec brakes usually have metallic ones