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Fox Brake lines hitting bump stops

  • Thread starter Thread starter keel
  • Start date Start date Sep 9, 2026

keel

Active Member
Aug 23, 2020
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Seattle, Wa
Sep 9, 2026
#1
  • Sep 9, 2026
  • #1
I’m running LMRs hard brake lines for disc brake conversion on my Fox and I ruptured a brake line by what looks like slamming it into the bump stop on the axle. Has anyone else experienced this? How can I fix this without removing the bump stops?
 

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AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
6,184
4,282
183
Claremore, OK
Sep 9, 2026
#2
  • Sep 9, 2026
  • #2
Bend the bracket that attaches to the axle.
 
Reactions: keel

KRUISR

10 Year Member
Apr 16, 2015
1,877
1,017
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Sep 9, 2026
#3
  • Sep 9, 2026
  • #3
Yes, bend the brackets - more accurately twist them to change the angle slightly so the fitting and tube coming out will miss the bump stop. Also, the brake lines should be tighter up against the axle tubes. There is usually a hold down clip on each axle tube about midway along the axle tube (one mounts with the axle vent).

 
Last edited: Sep 9, 2026
Reactions: Potomus Pete, keel and Habu135

keel

Active Member
Aug 23, 2020
282
128
53
Seattle, Wa
Sep 9, 2026
#4
  • Sep 9, 2026
  • #4
KRUISR said:
Yes, bend the brackets - more accurately twist them to change the angle slightly so the fitting and tube coming out will miss the bump stop. Also, the brake lines should be tighter up against the axle tubes.
Click to expand...
They were nice and tight against the axle tubes until the metal part of the bump stop bracket pushed them away from the axle.

It's weird that there is no mention of having to do these modifications on LMRs website or install video. All the parts I used were recommended for the install.

These lines were installed like this for ~3000 miles so I'm glad it happened when I was close to home! Got the brake light on the dash and I thought there was something wrong with my parking brake sensor but turns out I was losing fluid fast.
 

keel

Active Member
Aug 23, 2020
282
128
53
Seattle, Wa
Sep 9, 2026
#5
  • Sep 9, 2026
  • #5
What do you guys think about just cutting off the metal part of the bump stop bracket? Seems like that piece isn't really doing anything and it's what is actually hitting the brake line.
 

Habu135

5 Year Member
Jan 10, 2019
1,241
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California
Sep 9, 2026
#6
  • Sep 9, 2026
  • #6
 

Habu135

5 Year Member
Jan 10, 2019
1,241
784
133
California
Sep 9, 2026
#7
  • Sep 9, 2026
  • #7
 

Habu135

5 Year Member
Jan 10, 2019
1,241
784
133
California
Sep 9, 2026
#8
  • Sep 9, 2026
  • #8
It's your car, but I like to do it right once and done. All the parts to repair it are readily available.
 

KRUISR

10 Year Member
Apr 16, 2015
1,877
1,017
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Sep 9, 2026
#9
  • Sep 9, 2026
  • #9
If the dark spot on the axle tube is where the bump stop hits, you shouldn't have needed to modify the brackets. Is the axle moving side to side excessively.

When I did my 5 wheel disc conversion I just used SN95 hoses/brackets.
 

keel

Active Member
Aug 23, 2020
282
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53
Seattle, Wa
Sep 10, 2026
#10
  • Sep 10, 2026
  • #10
KRUISR said:
If the dark spot on the axle tube is where the bump stop hits, you shouldn't have needed to modify the brackets. Is the axle moving side to side excessively.

When I did my 5 wheel disc conversion I just used SN95 hoses/brackets.
Click to expand...
The rubber part of the bump stop clears (barely), the metal part of the bracket sticks out about 1" closer to the brake line which is what sheared through my brake line. I could see witness marks on the metal.

I used 94-95 brake hoses. Which makes me wonder if those cars got a redesigned bump stop situation.
 

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
6,184
4,282
183
Claremore, OK
Sep 10, 2026
#11
  • Sep 10, 2026
  • #11
If you switch to the SN95 rear shocks more specifically the Bilsteins then you can remove the bump stops and the brackets as the SN95 shocks have the bump stops built in. I would keep the pinion snubber though.
 
Reactions: keel

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,349
18,084
224
Massachusetts
Sep 10, 2026
#12
  • Sep 10, 2026
  • #12
I wonder if they are just not routed properly.

Here's how mine sit on my axle. LMR hard lines running 94/95 Mustang bracket/softlines (braided)


 
Reactions: keel and Habu135

keel

Active Member
Aug 23, 2020
282
128
53
Seattle, Wa
Sep 10, 2026
#13
  • Sep 10, 2026
  • #13
That's about what mine looks like (or rather looked like) except I'm missing the little brackets that hold the brake line to the axle. I'll see if I can dig some up and put them on.
 
Reactions: DadLife0724

DadLife0724

I vote for a new bung hole.
Mar 22, 2024
433
289
73
Cooperstown, PA
Sep 10, 2026
#14
  • Sep 10, 2026
  • #14
Mustang5L5 said:
I wonder if they are just not routed properly.

Here's how mine sit on my axle. LMR hard lines running 94/95 Mustang bracket/softlines (braided)


Click to expand...
Thats a nice rear end.
 
Reactions: Mustang5L5

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
6,184
4,282
183
Claremore, OK
Sep 10, 2026
#15
  • Sep 10, 2026
  • #15
@Noobz347 - I think DadLife0724 just picked up his CT…
 
Reactions: General karthief, keel, DadLife0724 and 1 other person

Qtrhrse23

Active Member
Jul 2, 2024
78
29
28
Texas
Sep 11, 2026
#16
  • Sep 11, 2026
  • #16
Get some JUNK OUT OF YOUR TRUNK so no more bump stop, and of course bend the bracket. I don't think I ever hit bump stops, that I know of.

A couple of metal ties(used on heat wrap) will keep em where you want.

I'd leave the brackets, but some people ARENT AS ANAL as I am about installing stuff correctly.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,349
18,084
224
Massachusetts
Sep 11, 2026
#17
  • Sep 11, 2026
  • #17
Thinking back. I may have had the springs out and articulated the suspension to try and see if there was contact. I might have tweaked the lines/brackets slightly to get clearance
 

keel

Active Member
Aug 23, 2020
282
128
53
Seattle, Wa
Sep 11, 2026
#18
  • Sep 11, 2026
  • #18
Qtrhrse23 said:
Get some JUNK OUT OF YOUR TRUNK so no more bump stop, and of course bend the bracket. I don't think I ever hit bump stops, that I know of.

A couple of metal ties(used on heat wrap) will keep em where you want.

I'd leave the brackets, but some people ARENT AS ANAL as I am about installing stuff correctly.
Click to expand...
I mean I was able to drive pretty far without this happening so I don't hit the bump stops often either. Usually I'm pretty particular too about having stuff "correct" but I don't mess around with brakes. If I've gotta modify or remove the bump stop brackets so I don't crash and die then it is what it is.

Going to SN95 shocks and removing the bump stops entirely seems like the most elegant solution but I was hoping to get some more time out of my Koni yellows since they're only about 5 years old. I'll keep you guys posted on what I end up doing.
 
Reactions: 91AOD5.0LX, General karthief and DadLife0724

keel

Active Member
Aug 23, 2020
282
128
53
Seattle, Wa
Sep 24, 2026
#19
  • Sep 24, 2026
  • #19
I forgot to come back and update this thread, I ended up just cutting part of the bump stop bracket for clearance. I do plan to completely remove them at some point and go to an SN95 rear shock but this should hold me over until then. I don't have the little brackets that secure the line to the axle in the photos but I've got those on there too now.

 
Reactions: General karthief, DadLife0724 and gkomo
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