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Dynaflex 8” Stacks $950

Dynaflex 8” stack setup with Y-pipe, stacks, and elbows. Recently removed and ready to go. Sat at about 12’4” from the ground to the top on a 2017 389 running 24 LPs. Solid setup for someone looking to upgrade without paying new prices.

DM to order: (423) 920-9551

#Dynaflex #Peterbilt389 #ExhaustStacks #8InchStacks

5/4 Edited to

Having upgraded my Peterbilt 389 with a Dynaflex 8” exhaust stack setup, I can share some insights for those considering a similar purchase. This setup, including the Y-pipe, stacks, and elbows, really enhanced both the performance and the aesthetic of my truck. The 8-inch diameter provides optimal exhaust flow, improving engine efficiency and giving a more robust sound without being overly loud. The height of about 12’4” ensures good vertical clearance and visibility on the road while maintaining compliance with road regulations. Because the setup was previously installed on a 2017 389 model running 24 LPs, it’s engineered to handle the power and exhaust output of similar heavy-duty trucks. One important note is to check the condition of all welds and mounting hardware on used setups like this to ensure safety and durability. In my experience, these used Dynaflex stacks offer excellent value for anyone wanting a reliable exhaust upgrade without paying the premium new prices. The included Y-pipe and elbows simplify installation, fitting directly to most Peterbilt exhaust systems. Additionally, the stacks bear a US DOT marking (USDOT 3170342), indicating they meet certain regulatory standards, which adds peace of mind. I recommend reaching out via DM or the listed contact number for specific questions about fitment or shipping options. Overall, this is a solid, cost-effective choice for Peterbilt owners looking to enhance their rig’s exhaust system with quality used parts.

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Dynaflex 8” Stacks $950.00

Dynaflex 8” stacks, no Y pipe. Stacks and elbows only. Not perfect, all imperfections pictured, they are off the truck ready to go. 12’ 4” from the ground to the tops on a 2017 389 on 24 lps #Peterbilt #Peterbilt389 #Peterbiltparts #Semitruck #Truckparts

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8’’ Dynaflex Stacks 389 Peterbilt $1,200

Big pipes, big statement. 8" Dynaflex Stack Kit for 389 - chrome shine and that bull-hauler look, all for $1,200 Ready to ship and turn heads on the highway. #peterbilt389 #TruckStacks #BigRigLife #BullHauler #TruckParts

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Dynaflex 8” Stacks $1,100

Dynaflex 8” stacks Only about a year and a half old — close to new condition. Rod Pickett elbows with miter tops 52” spool spacing. 13’2” tall on Peterbilt Air Leaf with 11R24.5 tires. Clean setup, ready to bolt on. #Dynaflex #Peterbilt #Peterbilt379 #Peterbilt389 #SemiTruck

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A teal Kenworth W900 semi-truck with tall chrome exhaust stacks is parked on an asphalt lot, hitched to a black curtain-side trailer. The truck's aggressive look is prominent under a clear blue sky.

7’’ STACKS $950

7” stacks for a Kenworth W900 🔥 Excellent condition – clean, straight, and ready to bolt on. No dents, no damage. Perfect upgrade if you’re looking to give your W9 that tall, aggressive look. Serious buyers only. Message me! 💪🚛 Hashtags: #Kenworth #KenworthW900 #W900 #SemiTruck #S

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8” Dynaflex Stacks $700

Came off my 2017 389 they are for high temp safe to run with emissions trucks will not discolor. #Peterbilt #truckparts #Peterbilt379 #BigRig #kenworthtrucks

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Dynaflex Stacks $700

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Dynaflex 8inch flat top stacks $850

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Peterbilt 359 flat top stacks $500

Dynaflex 8inch flat top stacks off a 1986, 359 Peterbilt no dents in good shape 12’6 tall #Peterbilt #SemiTruck #Peterbilt359 #bigrig #truckinglife

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6” Dynaflex Stacks/pipes For Kenworth $750

Set of used 6” Dynaflex stacks for Kenworth trucks. Purchased new and ran for 2 years. Measured 13’ tall on truck. Good shape #Peterbilt #Kenworth #Dynaflex #KenworthTrucks #DieselTrucks

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A complete set of W900L exhaust stack components laid out on a carpet, including two chrome elbow pipes, four wrapped straight pipes, two clamps, and a T-sweep pipe.

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W900L exhaust stacks $950

W900L exhaust stacks 7”wide all the way down to the elbows then goes to 5” with T sweep and straps #trucktok #dieselnation #bigrigbuild #truckforsale #truckinglife

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A Fresh set of 8” Lincoln stacks $950

8" Full diameter Peterbilt stack kit Kit includes: 8" y pipe 2 Elbows 2 Spools 4 clamps 2 cab brackets 8 bushings 2 y pipe support brackets #Semitruck #TruckLife #LincolnStacks #BigRig #TruckMods

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2018 Peterbilt 389 dynaflex stacks $2,500

Brand new complete set of 8” miter cut dynaflex stacks for a 389 Pete Miter cut tips All clamps and y pipe #SemiTruck #Peterbilt389 #DieselLife #BigRig #TruckersOnly

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7in stove dynaflex stacks $550

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7 inch dynaflex stacks $500

One side needs a new elbow other than that in good shape #Peterbilt #SemiTruck #SemiTruckParts #bigrig #BigRigLife

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7in stove dynaflex stacks $500.00

7in stove dynaflex stacks. Came off a 07 peterbilt 379 that had a cab/sleeper fire. #Peterbiltparts #Peterbilt379 #TruckParts #TruckLife #Peterbilt359

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Dynaflex 7” Exhaust stacks $500

Have a few rust spots but still look decent and will last a long time… elbows were junk and ended up putting new exhaust on the truck. Bottom clamp to the top is 110” Center spool is 62” No elbows or clamps/ brackets #Peterbilt #Semitruck #TruckMods #BigRig #Owneroperator

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8" stovetop stacks with elbows included $950 #Peterbilt #Semitruck #Trucking #TruckLife #Truckparts

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7” dyna flex tops $300

7” Dynaflex top stacks 32” curved pipes. Brand new — never installed Clean setup ready to go. $300 for the set — great deal! #BigRig #TruckLife #TruckBuild #TruckMods #ChromeStacks

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Peterbilt 388/389 7in exhaust $900

Dynaflex 7in exhaust kit, this kit is designed specifically to work for 08-10 emissions truck. Total height of 11’ 5” from ground to top of stacks. Everything is included except the cab brackets. Stacks still look good but have some weathering from over the years. #Peterbilt #Semitruck #

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7” dyna flex pipes $500

7” Dynaflex stacks Miter tops included 52” between clamps Bottoms will need a little attention, otherwise solid setup Great deal for the price $500 — serious buyers only #Dynaflex #ExhaustStacks #SemiTruckParts #TruckPartsForSale #Peterbilt

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Full kit of Dynaflex 7” Slash Tip stacks for a 379. Kit includes 2 elbows, 2 spools, and 2 top pipes. Come steal these tomorrow! #BigRig #SemiTruck #dynaflexusa #TruckMods #Peterbilt379

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Full kit of Dynaflex 7” Slash Tip stacks for a 379. Kit includes 2 elbows, 2 spools, and 2 top pipes. Come steal these today! #BigRigLife #TruckExhaust #Dynaflex #DieselLife #ChromeLife

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Full kit of Dynaflex 7” Slash Tip stacks for a 379. Kit includes 2 elbows, 2 spools, and 2 top pipes. Come steal these today! #Dynaflex #SemiTruck #Peterbilt379 #BigRig #7InchStacks

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