Mopar big brake kit
#11
Super Moderator
I haven't noticed this on mine. I will have to look to see if there has been any scrapping on the inside of my wheels. Maybe the difference is because you have a Rubicon which comes with 17" wheels and I have a Sahara which has the 18"?
That Mopar explanation doesn't make any sense. Because if someone "assumed" aftermarket wheels, then they would also assume bigger tires, which means longer brake lines, which the kit does not come with as just discussed. If the calipers rub, it's because someone didn't test it on all the stock wheels or the rubbing was overlooked. That Mopar explanation just sounds like marketing department B.S. in an effort to minimize a mistake.
That Mopar explanation doesn't make any sense. Because if someone "assumed" aftermarket wheels, then they would also assume bigger tires, which means longer brake lines, which the kit does not come with as just discussed. If the calipers rub, it's because someone didn't test it on all the stock wheels or the rubbing was overlooked. That Mopar explanation just sounds like marketing department B.S. in an effort to minimize a mistake.
I recently had the Mopar Big Brake Kit installed (had no time to mess with it). I found that I could not use my stock Rubicon wheels as the inside of the rim (back surface of the "spokes") scraped the outside of calipers. The wheels were getting ugly corrosion anyway so I sprung for some AEV Savegre wheels and put the stock BFG's on them.
The Mopar parts catalog only said that the kit required 17" or larger wheels, so I assumed the stocks would fit. A spokesperson at Mopar said they knew the stock wheels might not fit and had "assumed" aftermarket wheels/bigger tires. Supposedly they will modify the catalog entry.
Yet reading other posts it appears people have installed the kit with stock wheels? Was it just something about my 2007 wheels?
Anyway it was worth the upgrade for me. I noticed a big improvement in stopping power.
The Mopar parts catalog only said that the kit required 17" or larger wheels, so I assumed the stocks would fit. A spokesperson at Mopar said they knew the stock wheels might not fit and had "assumed" aftermarket wheels/bigger tires. Supposedly they will modify the catalog entry.
Yet reading other posts it appears people have installed the kit with stock wheels? Was it just something about my 2007 wheels?
Anyway it was worth the upgrade for me. I noticed a big improvement in stopping power.
Last edited by Rednroll; 09-24-2015 at 04:37 AM.
#12
JK Super Freak
I haven't noticed this on mine. I will have to look to see if there has been any scrapping on the inside of my wheels. Maybe the difference is because you have a Rubicon which comes with 17" wheels and I have a Sahara which has the 18"?
That Mopar explanation doesn't make any sense. Because if someone "assumed" aftermarket wheels, then they would also assume bigger tires, which means longer brake lines, which the kit does not come with as just discussed. If the calipers rub, it's because someone didn't test it on all the stock wheels or the rubbing was overlooked. That Mopar explanation just sounds like marketing department B.S. in an effort to minimize a mistake.
That Mopar explanation doesn't make any sense. Because if someone "assumed" aftermarket wheels, then they would also assume bigger tires, which means longer brake lines, which the kit does not come with as just discussed. If the calipers rub, it's because someone didn't test it on all the stock wheels or the rubbing was overlooked. That Mopar explanation just sounds like marketing department B.S. in an effort to minimize a mistake.
I am fairly sure you would have noticed as soon as you mounted it. It is likely the design and clearance of the 18's is different than my 17".
#13
JK Freak
Thread Starter
Ended up installing the Dynatrac kit from Northridge4x4. I'm blown away by the difference and the ease of the install. I can now stop my heavy slabs with 37 Nittos and the LS with 5.38 gears !
#14
I recently had the Mopar Big Brake Kit installed (had no time to mess with it). I found that I could not use my stock Rubicon wheels as the inside of the rim (back surface of the "spokes") scraped the outside of calipers. The wheels were getting ugly corrosion anyway so I sprung for some AEV Savegre wheels and put the stock BFG's on them.
The Mopar parts catalog only said that the kit required 17" or larger wheels, so I assumed the stocks would fit. A spokesperson at Mopar said they knew the stock wheels might not fit and had "assumed" aftermarket wheels/bigger tires. Supposedly they will modify the catalog entry.
Yet reading other posts it appears people have installed the kit with stock wheels? Was it just something about my 2007 wheels?
Anyway it was worth the upgrade for me. I noticed a big improvement in stopping power.
The Mopar parts catalog only said that the kit required 17" or larger wheels, so I assumed the stocks would fit. A spokesperson at Mopar said they knew the stock wheels might not fit and had "assumed" aftermarket wheels/bigger tires. Supposedly they will modify the catalog entry.
Yet reading other posts it appears people have installed the kit with stock wheels? Was it just something about my 2007 wheels?
Anyway it was worth the upgrade for me. I noticed a big improvement in stopping power.
#16
The master cylinders will remain the same. You just need to either order the correct reservoir from Mopar with the barb for the clutch, modify the reservoir you receive in the kit with a barb or purchase a separate reservoir for the clutch.
I'm going with the 3rd route. The reservoir does not to be very large, you just need somewhere to mount it. Motorcycle brake/clutch reservoirs are large enough and are cheap online. Some cars/trucks come with separate reservoirs as well, so they can be found fairly cheap and mounted on the firewall.
I think Mopar wants ~$150 for the correct one. Might see if the local dealer will let me swap it.
I'm going with the 3rd route. The reservoir does not to be very large, you just need somewhere to mount it. Motorcycle brake/clutch reservoirs are large enough and are cheap online. Some cars/trucks come with separate reservoirs as well, so they can be found fairly cheap and mounted on the firewall.
I think Mopar wants ~$150 for the correct one. Might see if the local dealer will let me swap it.
#17
JK Enthusiast
The master cylinders will remain the same. You just need to either order the correct reservoir from Mopar with the barb for the clutch, modify the reservoir you receive in the kit with a barb or purchase a separate reservoir for the clutch.
I'm going with the 3rd route. The reservoir does not to be very large, you just need somewhere to mount it. Motorcycle brake/clutch reservoirs are large enough and are cheap online. Some cars/trucks come with separate reservoirs as well, so they can be found fairly cheap and mounted on the firewall.
I think Mopar wants ~$150 for the correct one. Might see if the local dealer will let me swap it.
I'm going with the 3rd route. The reservoir does not to be very large, you just need somewhere to mount it. Motorcycle brake/clutch reservoirs are large enough and are cheap online. Some cars/trucks come with separate reservoirs as well, so they can be found fairly cheap and mounted on the firewall.
I think Mopar wants ~$150 for the correct one. Might see if the local dealer will let me swap it.
Do you know what the part number is for the reservoir for the manual trans?
#19
Super Moderator
Here are the installation instructions that come with the Mopar BBK.
Master Cylinder Assembly
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Caliper Assembly
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Master Cylinder Assembly
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Caliper Assembly
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#20
JK Newbie
I did have to adapt the barb fitting, because if I remember correctly the fitting on the Wildwood reservoir is a bit too small to directly connect the factory hose.