Disc brake calipers- standard fitting?

[grellboy]

I am looking to replace my brake calipers on my Caadx. They are promax disc calipers (160/140). Having difficulty finding replacements but have seen several generic calipers. Is there a standard fit? My current brakes are 2 bolt, so would generic 2 bolt calipers fit?

 

[Cycleops]

As far as I am aware there are two types of disc caliper fixings, flat mount and post mount.
Sellers should state which they are.
You should be able to identity which yours are from these pics.


Post mount.


Flat mount.

 

[Yellow Saddle]

Three types, ISO, post mount and flat mount. In historic order.

 

[grellboy]

This is my rear brake, although the front one has the bolts spaced further apart.

 

[grellboy]

Rear

 

[vickster]

Maybe post a pic of how/where it's actually attached to the bike

 

[I like Skol]

That's a flat mount caliper, the front will sit on an adapter plate to allow for different size rotors. I have flat mount Spyres on my latest bike and am happy with them. What is the reason for replacing the original units?

 

[I like Skol]

Just a warning, you may have mix-&-match flat mount at one end and post mount at the other, you need to check.

 

[Cycleops]

Can't actually see the mounts very well from your pics.

This was the subject of another almost identical question a year ago;
https://www.cyclechat.net/threads/a...tential-mechanical-disc-brake-upgrade.231422/

 

[I like Skol]

Just checked here - https://www.evanscycles.com/cannondale-caadx-tiagra-2017-cyclocross-bike-EV280340

Definitely post mount front and flat mount rear.

 

[si_c]

If you're looking to replace your disc calipers, might I suggest the TRP Hy/Rds over the Spyres as your top choice - certainly for the front - the difference in price isn't huge, but they are worth the extra.

From what I understand, the Promax brakes are adequate, but not great. The Spyres/Hy/Rd are both excellent but the latter has the edge just because you never need to adjust the pads.

 

[grellboy]

Just checked here - https://www.evanscycles.com/cannondale-caadx-tiagra-2017-cyclocross-bike-EV280340

Definitely post mount front and flat mount rear.

Thank you, I was a bit confused at first because I assumed they'd be the same!