Which Hope calipers?

FST4RD

FST4RD

Senior Retro Guru
The bike is a Giant ATX1, fork is an 05/06 Boxxer, hubs are Hope BigUns.
So I have 2 Hope 04 #3 calipers... I'm assuming that I'm going to have to run a 7" front rotor with a 6" rear with this combo?
Problem is, due to the unique BigUn rotors I have 2x8" and 2x7" rotors.
I wanted to run 8" on the front and 7" on the rear, which number calipers would I need?
If I ran 7" front and rear I would need a #3 on the front and what number on the back?
 

Attachments

  • IMG_20140606_160159.jpg
    IMG_20140606_160159.jpg
    99.3 KB · Views: 307
If my feeble memory serves they take a 160mm front, but could be wrong. Great looking brakes but with 4 tiny positions they can be prone to grief.
 
I think I have solved the problem. Hope make IS to IS adapters to increase the caliper 20mm each end. They'll do the trick nicely.
 
Re:

Wait - wait wait

Unless one of your #3's magics into a number #6 Boxxer specific Caliper then you're wasting your money!!

Yes Boxxers require a special specific non IS Caliper and a 205MM disk for anything prior to a Mono M4 Caliper.

The modern Boxxers are post mount however if it has normal tabs then they are a unique size...

The #3 on the back is 165 unless you have long tabs so you need a +20 adaptor to do 185 (I know as this is the combo on my DH bike) there was also a#8 Caliper which allowed a 205 to be run on the rear but I've not seen a DH4 #8 for many years!
 
Re:

The Boxxers are IS and the caliper is IS?
Is it not just a matter of spacing the caliper over slightly so it sits over the rotor?
What's the difference between the #3 and #6? I mean physical differences.
 
Re:

Sweet, it was hard enough coming across these in NZ!
Originally the ATX had shivers, but they ended up on my cannondale.
 
You must log in or register to reply here.

Similar threads

R
marzocchi shiver brake caliper
Replies
2
Views
431
rick1127
R
E
1996 Sintesi Bazooka
2
Replies
12
Views
2K
EarlofBarnet
E
D
Differences in hope c2 brakes
Replies
5
Views
1K
dan28
D
J i m s t e r
Wanted Front Hydraulic Disk Brake (Caliper and Lever and Line)
Replies
2
Views
409
dyna-ti
dyna-ti
mamadirt
For Sale Hope Mini No 5 Caliper, right hand lever, long hose + rotor - fully working
Replies
4
Views
818
mamadirt
mamadirt

Latest posts

Back
Top