SKU: 6022318285

PacBrake PRXB Inline Exhaust Brake 07.5-18 Dodge Ram 6.7L Cummins

Sale price$751.98 Regular price$835.53
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

PacBrake PRXB Inline Exhaust Brake 07.5-18 Dodge Ram 6.7L CumminsThe PRXB exhaust brake from PacBrake provides stopping power to not only save your service brakes, but keep you and your load safe on nasty descents. This kit mounts inline (as opposed to turbo mount) to an aftermarket 4 exhaust. For those that had a 5. 9L Cummins with a PacBrake exhaust brake, and then made the switch to a 6. 7L with a factory VGT brake, you know all too well that the PacBrake completely outperformed the slowing power of the factory

The PRXB exhaust brake from PacBrake provides stopping power to not only save your service brakes, but keep you and your load safe on nasty descents. This kit mounts inline (as opposed to turbo mount) to an aftermarket 4 exhaust.

For those that had a 5.9L Cummins with a PacBrake exhaust brake, and then made the switch to a 6.7L with a factory VGT brake, you know all too well that the PacBrake completely outperformed the slowing power of the factory unit. Sure, the VGT works good for a factory unit, but it truly doesn't compare to a traditional, butterfly valve style of brake, such as the PRXB.

And for those that have upgraded turbo to a non-VGT style of turbo, such as an S300, you've now completely eliminated any exhaust brake. If you're ready to get a brake back, and have something that's performance completely overshadows that of the stock exhaust brake, you need to upgrade with this replacement from PacBrake.

VEHICLE REQUIREMENTS:
  • 4" or 5" Turbo Back Exhaust
  • Non-VGT (Variable Geometry Turbo)

WHAT IS A PRXB? A PRXB is a Pressure Regulated Exhaust Brake that offers the highest retarding power for the lowest price available. Although the PRXB's retarding power is comparable to that of a compression release engine brake, the manufacturing and installation costs are significantly less.

HOW IS IT DIFFERENT FROM A STANDARD FIXED ORIFICE EXHAUST BRAKE? Conventional exhaust brakes experience a reduced exhaust backpressure at low engine speeds, resulting in an unnecessary loss of braking power. Pacbrake's innovative PRXB addresses this issue with a patented wastegate design that regulates exhaust backpressure as engine speed changes. The valve maintains near constant engine backpressure throughout the entire RPM range, providing maximum exhaust braking power at all times.

Controlled by a master ON/OFF switch, Pacbrake's exhaust brakes provide whisper quiet supplemental braking that allows service brakes to be used much less, ultimately saving money. They have the ability to be left on all the time, making it ideal for in-city driving or for steep, downhill grades. This product pays for itself as less wear on the brake pads means fewer brake jobs.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 6022318285

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4.0 ★★★★★
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ashlynnk
Fort Morgan, US
★★★★★ 4
Cute, comfortable waterproof boots (a little snug to put on)
Size: 7, Color: Velvet Tan/Gum 2
These are really cute Chelsea-style boots and feel very comfortable once they’re on. The waterproof material is great for wet weather and the sole feels sturdy with good traction. They look stylish enough to wear casually but still feel practical for rainy days. The only downside is they can be a little difficult to put on at first because the opening is somewhat snug, but once they’re on they fit well and feel supportive. Overall they’re a great waterproof boot and I’ve enjoyed wearing them.
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Reviewed in the United States on March 17, 2026
A
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Abby B
New York, US
★★★★★ 5
Surprisingly great for my wide feet and high instep!
Size: 10.5, Color: Velvet Tan/Gum 2
So thrilled I took a chance on these. Finding boots is impossible for me. I have wide feet, a super high instep, a bunion on one foot, and I wear a hard to find size (10.5). I ordered the 10.5 and 11 in these expecting I might need to size up for width (if I could even get them on). It was a struggle getting the 10.5s on the first time, and once I did they were somewhat uncomfortable on the top of my left foot. But I read that they would relax so decided to give it a go because I need waterproof boots for an upcoming trip and the 11s felt too long. After two days of light wear, they are already breaking in and I have no more discomfort. Getting them on is already easier and they are plenty wide enough and very comfortable to walk in. These are true to size. Super happy and worth a day of mild discomfort to break them in!
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Reviewed in the United States on March 7, 2026
E
Verified Purchase
EE
Waukegan, US
★★★★★ 5
Comfortable, sturdy, waterproof
Size: 9.5, Color: Black/Black
Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
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Reviewed in the United States on May 17, 2026
K
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Kate
Whiting, US
★★★★★ 5
Super cute, comfortable, practical, love that they are slip on
Size: 10.5, Color: Tobacco/Black
I have worn these 2-3 times already. The first day was a school/work day so I was on my feet 9 hours and the only issue I had was with the side of the boot rubbing against my ankle. I just make sure I wear socks high enough to cover my ankles or jeans that go into the boots now for long wear days. Absolutely love them! They keep my feet dry in this snow( we live in Michigan). I had been looking for a pair like this for awhile now and was getting super frustrated that I couldn't find my size in any that I liked. I saw that they had these available in a 10.5 and I wear 11. I looked at the Sorel website reviews (since the amazon ones weren't super helpful on sizing) and they said that the boots ran big so I took a chance on the 10.5 fitting me. They fit perfect. I have long narrow feet but I could see where they would be tight or uncomfortable on someone with wider feet. I've been trying to find a pair for my mom now since she has boot envy.
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Reviewed in the United States on January 27, 2026
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Verified Purchase
Nicholle King
Belleville, US
★★★★★ 5
Worth it.
Size: 8.5, Color: Crushed Clay/Gum 2
Love all my Sorels. These were really cute, good color, comfortable, warm, fit well, good quality and sturdy. I would order again.
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Reviewed in the United States on March 26, 2026

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