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My Teraflex Delta Brakes Thread

bakobobby

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Wanted to have an expanded thread on the Delta Brake kit. Installed recently they bolt on and do not require a new master cylinder. They upgrade from a single piston to a 2x2 setup providing improved clamping. Rotors also get upgraded to larger and slotted units. The kit was around $2600 and I paid in the realm of $700 for install.

They fit with my Icon Rebound 17”x8.5” with 4.75” backspacing no offset. Fit with no rubbing. There is a bit less room overall over stock units so I could see mud maybe jamming up in there, but I am not going to worry about it. Will get him dirty then if it ends up an issue can go from there.

I have been motoring around town and have been enjoying the extra stopping power. When I first picked up the truck I was not thinking about the new brakes. I also had big upgrades in front and back anti-rock and falcon sp2 shocks done at the same time. Was busy minding how the rig worked itself around corners and what the sway was like with the ARs. The brakes just do their job. This is to say they stop the rig nice and smooth and with good pedal feel. There is no persnickety trade offs that I can find yet. My guess is that’ll be how it is going forward. Basically OEM++on road.

I have not been able to do any hard off road adventuring but did drive over some dirt berms and a few rocks ? they have some bite for sure. At slow speed say 5ish mph when I get on the brakes its instant stopping power while the OG brakes had a bit of what I can only describe as delay for the full power. Like when pushing the pedal hard it had maybe 40% at first then over 1-2 seconds it reached 100% What I am saying is you get the full 100% when you push hard instantly. Its a bit to get used to. Not to say it doesn’t modulate. That was one of my worries, that this upgrade would make braking more binary. Not the case! I do think the way the stock brakes work is kind of nice, seeing it sort of modulates for you on hard braking. Deltas you can do that yourself but ups the difficulty a bit. Guess just part of the learning curve.

Downsides? Well the cost seems to be were those lie. Besides initial cost there will be an uptick in pads and rotors over time. My hope is those consumables last longer than the stock ones would being they are higher end.
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rharr

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Will you be able to get replacement parts in say 5 years when terra flex has moved on to the next jeep model?

Are there cross referenced common OEM parts (like ram rotors and ford calipers) that can be used in place if terraflex leaves the market?

Those would be my questions to terra flex before dropping 2600 big ones.
 

JeepOfTheseus

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Any issues with leaking from the check valve? That was a problem for me, despite torquing to spec. They advised to go a couple lbs over, which seems to have fixed it - but damn it felt bad cranking into the caliper like that.

Overall I like mine, but I feel it takes lot more travel to get to full stopping power.
 
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bakobobby

bakobobby

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Will you be able to get replacement parts in say 5 years when terra flex has moved on to the next jeep model?

Are there cross referenced common OEM parts (like ram rotors and ford calipers) that can be used in place if terraflex leaves the market?

Those would be my questions to terra flex before dropping 2600 big ones.
Good questions.

Likely 5 years is a bit pessimistic. Its a Dana axle thing not a JT thing. These are the same ones used on JKs, JLs and the same brakes being used on TFs upgraded axles as well. They have already been supporting them for number of years. That said it is a valid concern. Factory has quite a backlog of parts that should last many years. For me stock is not what I want and I recognize aftermarket always has stocking issues. I would be more worried about being stuck way out somehwere with a busted Delta brake and not being able to quickly source a new one rather than can I at all.

with respect to sourcing other compatible parts I do not know but I would be interested in that answer. Hopefully someone can chime in.
 

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bakobobby

bakobobby

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Any issues with leaking from the check valve? That was a problem for me, despite torquing to spec. They advised to go a couple lbs over, which seems to have fixed it - but damn it felt bad cranking into the caliper like that.
No but I will keep an eye on it and report back.
 
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bakobobby

bakobobby

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Overall I like mine, but I feel it takes lot more travel to get to full stopping power.
That is not the case for mine. Travel is just like stock and no mush or other negative pedal feel. I am installing these at about 5k miles so everything is new’ish if that makes a difference.
 

JeepOfTheseus

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I installed around 7k - my only guess is still some slight air due to the leak in the check valves. I hadn't re-bled it after torquing them further - something on the todo list.
 

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bakoboddy, thanks for the honest review! It's good to see customer feedback on our kits.

Will you be able to get replacement parts in say 5 years when terra flex has moved on to the next jeep model?

Are there cross referenced common OEM parts (like ram rotors and ford calipers) that can be used in place if terraflex leaves the market?

Those would be my questions to terra flex before dropping 2600 big ones.
We keep 100's of replacement parts on hand in our inventory, from rotors, to caliper piston seals, etc. We do our best to carry service parts should a kit be discontinued; we still have parts to old TJ lift kits that haven't been sold in over 10 years. Currently we do not have any plans to end production or discontinue the Delta kit.

The rotors and most of the caliper parts will be unique to the Delta kits, but the brake pads and related parts are from a 2015 Toyota Tundra.
 

rharr

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Good to know. Thanks for taking the time to let the group know.
My former XJ had the terra flex 4:1 conversion.
 

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TeraFlex

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Good to know. Thanks for taking the time to let the group know.
My former XJ had the terra flex 4:1 conversion.
No problem at all! Happy to help out and respond to questions, it's good to be able to communicate directly with our customer's and Jeeper's in general.
Nice, that was a very popular kit back in the day!
 

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No problem at all! Happy to help out and respond to questions, it's good to be able to communicate directly with our customer's and Jeeper's in general.
Nice, that was a very popular kit back in the day!
Can you please explain the differences between the TeraFlex and Mopar Big Brake kits? I thought that the JTRD's had bigger brakes so not sure if the Mopar upgrade is actually an upgrade.
 

TeraFlex

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Can you please explain the differences between the TeraFlex and Mopar Big Brake kits? I thought that the JTRD's had bigger brakes so not sure if the Mopar upgrade is actually an upgrade.
We don't currently offer a brake kit for the JL/JT's outside of our Delta kits; you may be thinking of our big brake kit we offer for the JK's.

That being said, the Mopar big brake kit uses dual piston front calipers and a larger single piston rear caliper. However, that is what comes from the factory on Rubicon's, and a few other "higher" trim levels, so it's only intended as an upgrade on the Sport trim and "lower" trim models. Our Delta brakes are a massive upgrade in stopping power over any factory/Mopar brake setup, especially on Sport or equivalent axles.
 

DocMcStuffins

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We don't currently offer a brake kit for the JL/JT's outside of our Delta kits; you may be thinking of our big brake kit we offer for the JK's.

That being said, the Mopar big brake kit uses dual piston front calipers and a larger single piston rear caliper. However, that is what comes from the factory on Rubicon's, and a few other "higher" trim levels, so it's only intended as an upgrade on the Sport trim and "lower" trim models. Our Delta brakes are a massive upgrade in stopping power over any factory/Mopar brake setup, especially on Sport or equivalent axles.
Awesome- that's what I was thinking! Thank you. How much of an upgrade from the OEM JTRD brakes do you think the Delta kit is???
 
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bakobobby

bakobobby

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Awesome- that's what I was thinking! Thank you. How much of an upgrade from the OEM JTRD brakes do you think the Delta kit is???
I need to find someone local so we can make that determination. I test drove a rubi and the brakes didn’t jump out at me, but were not bad or anything. Also 37” vs sub 33” tires and smaller wheels so the rubi would be interesting to test when same setup. The sport brakes were so obviously poorly matched after upgrading. I should not have to think about braking that much when driving.
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