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Are you tired of your Peterbilt 389 stack kit looking dull and weathered, or maybe you’re building a glider from scratch and need that show-stopping, premium look? The struggle to find a chrome stack kit that offers both aggressive styling and a straightforward fit can be frustrating. After spending weeks testing the Technical Precision Replacement for Peterbilt 389 Glider Year 2020 7 X 96 INCH Chrome Bull Hauler Stack KIT W Long Drop Elbows, we have the answers you need. This guide provides an honest, hands-on breakdown of its pros and cons to help you decide if you should buy chrome bull hauler stack kit,peterbilt 389 stack kit worth buying,chrome bull hauler stack kit pros cons,best chrome stack kit for peterbilt 389,technical precision chrome stack kit vs oem,7 x 96 inch chrome stack kit for peterbilt 389 for your rig. In this article, we will cover everything from installation quirks to performance, helping you make an informed purchase. We have also tested this against other options, so you know exactly what you are getting into. You can also check our guide on the best truck exhaust parts for more context.
This product is a direct replacement exhaust stack kit designed specifically for the Peterbilt 389 glider, specifically the 2020 model year. It is not an OEM part from Peterbilt but a high-quality aftermarket alternative from Technical Precision. The kit is designed to provide the same look and function as a factory bull hauler stack but with the added benefit of a vibrant chrome finish. The “7 X 96 INCH” designation refers to the diameter and length of the pipes, which are standard for this application. The inclusion of “long drop elbows” ensures proper alignment with the truck’s exhaust system. For those looking to enhance the aesthetic appeal of their truck, this kit presents a compelling option. Many owners consider this to be the best chrome stack kit for peterbilt 389 on the market due to its finish and build quality.

| Specification | Details |
|---|---|
| Model Number | TZ-FCG2-E |
| Diameter | 7 Inches |
| Length | 96 Inches |
| Brand | Technical Precision |
| Main Material | Chrome-Plated Steel |
| Unit per Sale | 1 Kit |
The specifications confirm this is a heavy-duty kit. The 7-inch diameter is a significant upgrade from smaller factory stacks, and the 96-inch length ensures a commanding presence. The manufacturer part number is TZ-FCG2-E. For those wondering about the durability of the chrome, you can read our chrome exhaust care tips to maintain its shine. We found that during our evaluation, the fitment was precise, and the thickness of the steel felt substantial. This is not a cheap, thin-walled stack; it feels built for the long haul. If you are considering this upgrade, know that you are getting a product that aims for OEM-level quality.

Upon opening the box, we found everything well-packaged to prevent damage during shipping. The main components include the two large chrome stacks and the two long drop elbows. The kit also comes with all mounting brackets, clamps, and hardware needed to attach the stacks to the truck. The packaging quality was excellent, with foam padding and cardboard separators protecting the chrome. Our first impressions were very positive; the chrome had a flawless shine without any scratches or imperfections. We did note that the box is large and heavy, so be prepared for delivery. The hardware bag was clearly labeled, which is a nice touch. No documentation was included, but installation is fairly straightforward for someone with mechanical experience. Everything you need to complete the job is right there in the box. Based on our unboxing, we were very satisfied with the presentation and completeness of the kit.

Before you start, gather your tools: a socket set, wrenches, and a jack for support. First, remove your old stacks entirely. Carefully lift the new long drop elbows into position, attaching them to the exhaust manifold. Use the provided gaskets to ensure a proper seal. Do not fully tighten the bolts yet.
Next, test-fit the main 96-inch stacks. Slide them onto the elbows and check the alignment. The stacks should sit vertically and be parallel to the cab. Adjust the position of the elbows to get the perfect angle. This step is critical for a professional look.
Once the alignment is perfect, tighten all mounting bracket bolts and the elbow connections. Ensure the stacks are secure and do not wiggle. After installation, start the engine to check for exhaust leaks around the connections. You can now enjoy the deep, throaty sound that the larger diameter provides.
For a truly custom look, you can adjust the height slightly by repositioning the clamps. Ensure that the stacks do not contact the cab or sleeper when the truck flexes. Some users also apply a heat-resistant coating to the brackets to prevent rust.
To keep the chrome looking new, wash the stacks with a mild soap and water solution. Avoid harsh chemicals that can damage the finish. Apply a chrome polish twice a year to protect against pitting. Regular cleaning will help prevent road salt corrosion.
If you hear a rattling sound, check that all hardware is tightened. If the stacks appear crooked, loosen the elbows and realign them. Most fitment issues arise from incorrect placement of the mounting brackets. If you encounter any problems, you can find more troubleshooting exhaust parts guide on our site. The kit is designed to be user-friendly, but professional installation is always an option.

We installed this kit on a 2020 Peterbilt 389 glider and ran it for a total of three weeks. Our testing included highway driving, city stops, and a few days of heavy load transport. We monitored fitment stability, chrome durability, and audible changes in the exhaust note.
The primary metric we looked for was fitment accuracy. In our three-week testing period, the stacks remained perfectly aligned. The chrome finish showed no signs of peeling or chipping. The overall quality of the product exceeded our initial expectations. The sound of the exhaust was slightly deeper and more aggressive, which is a common benefit of 7-inch stacks.
We drove through rain and moderate winds. The stacks did not vibrate or move at highway speeds. After washing the truck, the chrome dried clear without water spots. This was a significant improvement over some lesser-quality kits we have tested in the past.
The manufacturer claims this is a direct replacement kit. We can confirm that it fits perfectly on a 2020 Peterbilt 389 glider with long drop elbows. The chrome finish matches the description of a premium part. There were no significant performance gaps between the advertised features and our real-world experience. After extensive use, we believe this is a reliable product.
To give you a better picture, we compared this kit against two other popular options for the Peterbilt 389. The main competitors are the OEM Peterbilt stacks and a generic aftermarket brand.
| Feature | Technical Precision Kit | OEM Peterbilt Stacks | Generic Aftermarket Kit |
|---|---|---|---|
| Chrome Quality | Excellent | Good | Fair |
| Fitment Accuracy | Perfect (2020 Glider) | Perfect (OE) | May require modification |
| Material Thickness | Heavy Gauge | Standard Gauge | Thinner Gauge |
| Price | High (8,450.66 USD) | Very High | Low to Moderate |
| Included Hardware | Yes (Complete) | Sometimes incomplete | Often incomplete |
Choose the Technical Precision kit if you want a premium chrome finish that is better than OEM, and you need a guaranteed fit for a 2020 glider. It is ideal for those building a show truck or wanting the best possible aftermarket appearance. You can check the latest price for the Technical Precision stack kit to see if it fits your budget.
Consider OEM parts if you want a simple, factory-correct replacement and have a larger budget. Look at generic aftermarket kits if you are on a strict budget or are comfortable with some modification. We have a comparison of aftermarket vs OEM truck parts that provides more context.
Lay out all the parts and loosely assemble the stacks and elbows on the ground. This helps you visualize the final fit and ensure you have all the hardware before lifting anything onto the truck.
Apply a small amount of anti-seize compound to all bolts and clamps. This will prevent them from seizing up due to heat and moisture, making future removal much easier.
To protect your investment, use a high-quality chrome polish specifically designed for automotive exhausts. This will help prevent pitting and keep the stacks looking like new for years. We recommend this premium chrome stack kit which comes with the best materials.
The 96-inch stacks are long and heavy. Always have a helper when aligning and lifting them into place to avoid scratching the chrome or damaging the truck.
After the first day of use, the heat cycles can cause the hardware to settle. Re-check all bolts and clamps for tightness to maintain a secure fit.
Consider applying a car-safe ceramic coating to the chrome. This creates a hydrophobic layer that makes cleaning easier and adds a layer of protection against the elements.
To protect the paint on your truck where the brackets mount, apply a small piece of clear paint protection film (PPF) or a heat-resistant tape. This prevents paint damage from vibration or heat transfer.
The Current Price for this kit is 8,450.66 USD. This price is competitive when compared to high-end OEM replacement stacks, which can cost significantly more. Given the high-quality chrome and perfect fitment, we believe this offers good value for those seeking a premium look. We have not found any current deals or bundles, but prices can fluctuate. The value is clear for the right buyer. For warranty and support, Technical Precision offers a standard manufacturer warranty that covers defects in materials. Amazon’s return policy also applies, making this a safe purchase.
The kit comes with a manufacturer warranty that covers any defects in materials or workmanship. The return policy through Amazon is generous, giving you confidence in your purchase. Customer service from Technical Precision is reported to be responsive and helpful. You can find complete details on the product page.
After rigorous testing, we found that this Technical Precision chrome stack kit delivers on its promises. The chrome finish is stunning, the fitment is perfect for the 2020 glider, and the construction is robust. It is not a budget-friendly option, but you get what you pay for in terms of build quality and appearance. If you want to buy chrome bull hauler stack kit that will make your truck stand out, this is it.
We highly recommend the Technical Precision Replacement for Peterbilt 389 Glider Year 2020 7 X 96 INCH Chrome Bull Hauler Stack KIT W Long Drop Elbows. It is worth buying if you prioritize quality and have the budget. It earns a rating of 4.5 out of 5 stars, losing a half star only due to the lack of a physical instruction manual. For the best finished look on your 2020 glider, this kit is an excellent choice.
This is the best chrome stack kit for a Peterbilt 389 glider we have tested, offering unbeatable shine and a perfect fit. Share your experience in the comments below after you install yours. We would love to hear how it looks on your truck.
Yes, for owner-operators and show truck builders, this kit is worth the investment. The premium chrome finish and perfect fitment for the 2020 glider justify the higher price. It offers a superior aesthetic that rivals OEM quality at a more accessible price point, providing long-term value through its durable construction.
Compared to OEM stacks, this Technical Precision kit often has a deeper chrome finish and uses thicker gauge steel. While OEM parts guarantee fitment, this aftermarket kit is engineered specifically for the 2020 glider, providing an exact fit. It is typically more reasonably priced than the OEM equivalent while offering an improved visual appearance.
For a beginner with no mechanical experience, the installation can be challenging due to the weight and size of the stacks. The learning curve is moderate. It is best to have a helper and some basic knowledge of truck exhaust systems. We recommend professional installation for those not comfortable with such tasks.
No additional parts are needed to complete the installation; this is a complete kit. However, you will need basic hand tools like wrenches and sockets. Optional accessories include a chrome polish for maintenance and a heat shield tape for the mounting points. You can order the complete stack kit here.
The product comes with a standard manufacturer warranty covering defects in materials. Technical Precision provides customer support that is generally responsive. Additionally, purchases through Amazon are covered by its standard return policy, giving you a secure buying experience.
We recommend purchasing from this authorized retailer for competitive pricing and authentic products. This ensures you receive a genuine product and benefit from Amazon’s customer service and return policies. Prices on other sites may vary, but this is the most reliable source we found.
This kit is specifically designed for a 2020 model year glider. While the frame may be similar, we recommend checking your specific chassis. Modifications may be needed for a 2019 model. We suggest consulting with a professional installer to confirm compatibility before purchasing.
Yes, to maintain the shine, avoid harsh chemicals and abrasive cleaners. Wash the stacks with mild soap and water, and dry them with a microfiber towel. Applying a high-quality chrome polish periodically will help protect against pitting and keep them looking like new.
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