2011 GMC Sierra Denali Performance Headers

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    • (1 review)
      # 231099665
      GMC Sierra Denali 1500 / 2500 HD Flex 2011, Perfromance Headers by Gibson®. Let your engine breathe and gain power and performance with Gibson Performance Headers. These headers will flow much more exhaust than your restrictive...
      Increases low and mid-range horsepower and torqueIncreases engine efficiency
      $428.84 - $591.20
    • (0 reviews)
      # 231163762
      GMC Sierra Denali Crew Cab 6.6L 2011, Ductile Iron Manifold by aFe®. Material: Ductile Iron. Replace the exhaust manifold on your Dodge diesel with the BladeRunner stainless steel manifold. It was created to address a cracking...
      Cast from 304 stainless steelThick wall construction and reinforced ribs for maximum durability
      $495.00
    • (0 reviews)
      # 105140837
      GMC Sierra Denali 2011, Twisted Steel™ 409 SS Headers by aFe®. The new Twisted Steel performance header from aFe Power is redefining the header industry with the new pulse control technology. aFe engineers have designed this...
      Optimized Tube Lengths Improve Flow and Performance100% hand MIG-welded construction ensures optimal strength and durability
      $795.00 - $1,595.00
    • (0 reviews)
      # 142866782
      GMC Sierra Denali 2011, Long Tube Headers by Flowtech®. Collector Outlet Diameter: 3". Carb Compliant: No. Material: Mild Steel. FLOWTECH headers are precision engineered and leak tested to get maximum performance and fuel economy...
      Mandrel-formed Power Plenum collectors for low backpressureConstructed of .060 cold roll flash mild steel tubing
      $302.95 - $555.95
    • (0 reviews)
      # 231283276
      GMC Sierra Denali 2011, Shorty Headers by Flowtech®. 1.625" Diameter, 2.5" Collector Diameter. Include all mounting hardware Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Carb Compliant: No. This product is made...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $312.95 - $416.95
    • (0 reviews)
      # 231032074
      GMC Sierra Denali 1500 2011, SuperMAXX Stainless Steel Natural Long Tube Exhaust Header by Dynatech®. SuperMAXX Stainless Long Tube Headers are an excellent way to bolt on 15 hp and 38.5 Ft. Lbs. of Tq. to your 2007 - 2013 GMC....
      Perfect, direct bolt-on fit+15 HP and 38.5 Ft. Lbs of Torque
      $899.99
    • (0 reviews)
      # 221600012
      GMC Sierra Denali 6.0L / 6.2L 2011, Cat4ward Full-Length Header by JBA®. Primary Tube Diameter: 1-5/8". Collector Diameter: 3". JBA long tube headers are the number one choice for maximum performance gains and high RPM efficiency....
      3/8' thick CNC laser-cut flangesPatented JBA Firecone® merged collector
      $479.33 - $607.59
    • (0 reviews)
      # 221600020
      GMC Sierra Denali 1500 W/O EGR System 2011, Cat4ward Shorty Header by JBA®. Primary Tube Diameter: 1-5/8". Collector Diameter: 2.5". JBA shorty headers are one of the best performance upgrades available for any application. Hot Rod...
      Mandrel-bent stainless steel primary tubesPatented JBA Firecone® collector
      $440.92 - $595.75
    • (0 reviews)
      # 232519930
      GMC Sierra Denali 6.6L 2011, Race Stainless Steel Exhaust Manifold by PPE®. PPE’s Manifold and Up-Pipes are designed to maximize power and flow characteristics. The Up-Pipe bellows are high flow, internally sleeved and aircraft...
      Cast Hi-Sil Moly iron high-flow manifold constructionSignificant reduction in exhaust back pressures
      $986.39
    • (0 reviews)
      # 58838054
      GMC Sierra Denali 6.6L 2011, Stainless Steel Exhaust Manifold with Up-Pipes by PPE®. PPE’s High-Flow Exhaust Manifolds and Up-Pipes have a 53% greater flow over stock and are 50 State emissions legal. PPE Manifolds are made from...
      Cast Hi-Sil Moly iron high-flow manifold constructionSignificant reduction in exhaust back pressure
      $1,349.99
    • (0 reviews)
      # 231099694
      GMC Sierra Denali 6.0L 2011, Exhaust Headers by PaceSetter®. Primary Tubing Diameter: 1.875". Carb Compliant: No. Material: Mild Steel. From the leader in the design, manufacture and distribution of affordably priced, quality made...
      3/8” thick CNC-machined, port matched steel flanges1-7/8” or 1-3/4” 16-gauge mild steel, mandrel-bent primaries
      $296.99 - $443.87
    • (0 reviews)
      # 231099750
      GMC Sierra Denali 6.0L 2011, HTR Collector Gasket by Taylor Cable®. Series: HTR. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality. Designed...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $17.10
    • (0 reviews)
      # 245514359
      GMC Sierra Denali 6.0L 2011, Header Gasket by Howe Racing Enterprises®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
      Built to match your exact requirementsHigh quality you can rely on
      $11.68
    • (0 reviews)
      # 262494919
      GMC Sierra Denali 2011, Exhaust Header Gasket by Remflex®. Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees - day after...
      Remflex exhaust gaskets come in a standard 1/8" thickness and are designed to crush 50%. This allows them to fill gaps in the flange surface up to 1/16"100% flexible graphite construction means Remflex gaskets are good for up to 3,000 degrees F - far exceeding that of any vehicle's exhaust system temperature
      $23.83 - $31.98
    • (0 reviews)
      # 262499983
      GMC Sierra Denali 6.0L 2011, Manifold/Header Gasket by Remflex®. Set of 2. 1-7/8" D Round Port. Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures...
      Remflex exhaust gaskets come in a standard 1/8" thickness and are designed to crush 50%. This allows them to fill gaps in the flange surface up to 1/16"100% flexible graphite construction means Remflex gaskets are good for up to 3,000 degrees F - far exceeding that of any vehicle's exhaust system temperature
      $27.99
    • (0 reviews)
      # 74449575
      GMC Sierra Denali Duramax Engine 2011, Exhaust Manifold Gasket by Merchant Automotive®.
      High quality at an affordable priceExpertly made from premium materials
      $38.00
    • (0 reviews)
      # 231283300
      GMC Sierra Denali 2011, Header Bolt Set by Mr. Gasket®. 12 Pieces. Whatever exhaust system you install on your engine, whether it’s a set of chromed headers or simply a set of cleaned up flat black rams horn manifolds, you’ll...
      $8.15 - $36.69
    • (0 reviews)
      # 231099704
      GMC Sierra Denali 2500 HD with Dana 60 Axles 2011, Vibe-Lock Header Bolt Kit by Taylor Cable®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $49.65 - $57.15
    • (0 reviews)
      # 231099707
      GMC Sierra Denali 2011, Exhaust Manifold by Dorman®. More like a complete kit than a single part, many of the Exhaust Manifolds include gaskets and hardware for a complete installation. Since this part is a direct replacement, the...
      High Quality tubular construction protects against warping and/or crackingLeak-resistant for long-lasting performance
      $66.95 - $122.61
    • (0 reviews)
      # 231283297
      GMC Sierra Denali 6.0L / 6.2L 2011, Exhaust Manifold by ATP®. ATP Graywerks Exhaust Manifolds are a high quality OE replacement alternative. Each manifold is developed off of the original parts specifications, to ensure it will...
      Manufactured to OE design ensuring manifold will line up and flow like the original unitHigh grade metallurgy resists fatigue cracking and breakage
      $70.88 - $101.99
    • (0 reviews)
      # 231099738
      GMC Sierra Denali Diesel 2011, Exhaust Manifold Clamp by Dorman®. Material: Stainless Steel. Easily repair exhaust leaks without removing broken manifold bolts with Dorman’s Exhaust Manifold to Cylinder Head Repair Clamp. This...
      Eliminates the need to remove cylinder head, saving you time and moneyReduces installation time
      $28.10 - $47.82
    • (0 reviews)
      # 231161479
      GMC Sierra Denali Flex 2011, GM Original Equipment™ Manifold Gasket by ACDelco®. 12 Months, 12,000 Miles (Parts Only) Series: GM Original Equipment™. Designed utilizing the latest technology, this product by ACDelco features...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $13.51
    • (0 reviews)
      # 231283294
      GMC Sierra Denali 2011, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $13.64 - $32.55
    • (0 reviews)
      # 231031271
      GMC Sierra Denali 6.0L 2011, Exhaust Manifold Gasket Set by DNJ Engine Components®. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product is of the finest...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $10.92
    • (0 reviews)
      # mpn358949929
      Universal Chrome Plated Lake Pipe by Patriot Exhaust®. 1 Pair. Includes: Muffler, Brackets. Side Pipe made from Steel. Chrome Lake Pipes 63". Finish: Chrome Plated. Show quality chrome Lake Pipe 4 kits connect to headers or stock...
      The look of an expensive tuned header side pipe at a fraction of the costSide pipes come with built-in six sided louvered cored mufflers which absorb sound not horsepower
      $339.21
    • (0 reviews)
      # 231014066
      Universal Aluminized Steel Header Collector Ball Flange Kit by Flowmaster®. Material: Aluminized Steel. The Collector Ball Flange takes the place of the messy three-bolt connections and ensures a leak-free and connection. The ball...
      Replaces Messy 3-Bolt Flange ConnectionEnsures Leak Free Connection
      $99.00
    • (1 review)
      # 231014034
      Universal Scavenger Series Y-Collector by Flowmaster®. Series: Scavenger Series. The patented Scavenger Y-Collector is based on the principles of Pulse Technology. They are designed to harmonize the exhaust pulses from two...
      Race Proven TechnologyPatented Design that Creates Low Pressure Zones for Better Scavenging
      $47.55 - $54.01
    • (0 reviews)
      # 231014205
      Universal Header Merge Collector by MagnaFlow®. These headers are a cost effective an easy way to boost your vehicle's horsepower and torque in almost nothing flat. They are made of mandrel bent stainless steel with a ceramic...
      Easy and a cost effective solution to add horsepower and torque to your enginePrecisely designed for quality, fit and function
      $265.16 - $333.13
    • (0 reviews)
      # mpn1295593899
      Universal 304 SS 2-Bolt Manifold Flange by Stainless Works®. Primary Tubing Diameter: 3.02". Material: 304 SS. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum resistance to...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $34.00
    • (0 reviews)
      # mpn584304642
      Universal Afterburner™ Thrust Toobs Headers Extension by Flowtech®. 3" Inlet, 12" Long, 3-Bolt, Package contains one pair Series: Afterburner™. Afterburner Thrust Toobs used with open headers are designed to complete the system...
      Expertly crafted from premium materials3-Bolt, 3” ID, 12” Long
      $38.44
    • (0 reviews)
      # 266461787
      Universal Reducer by Flowtech®. Flowtech understands that when you purchase a set of headers, a muffler, or even an entire exhaust system, you want to know that you’re getting everything you need to complete the installation.
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $19.42 - $128.95
    • (0 reviews)
      # 231013939
      Universal High-Velocity Merge Collector by Dynatech®. 1 Piece. Dynatech Merge Collectors are an excellent way to maximize the potential of your exhaust system. When your exhaust system requires the maximum horsepower, a set of...
      Maximizes the potential of the exhaust systemMade of High Quality Materials
      $199.99
    • (0 reviews)
      # 231013907
      Universal High-flow Slip On Collector by Dynatech®. 1 Piece. Material: Mild Steel. Dynatech High-Flow Slip On Collectors are designed with maximum exhaust flow in mind. With a High-Flow long transition area, these collectors...
      Collectors come race-ready right out of the boxAvailable in a wide variety of primary tube and collector outlet sizes
      $89.99 - $149.99
    • (0 reviews)
      # 231013966
      Universal Long Tube Pavement Late Model Headers by Dynatech®. These Long Tube Pavement Late Model Headers are designed for use with Standard Chevy engines. The Long Tube design promotes excellent torque throughout the RPM range.
      35” Equal Length primaries for maximum Torque and HorsepowerValve covers are removable with headers installed
      $105.99 - $109.99
    • (0 reviews)
      # 231013881
      Universal Mild Steel 80 Degree Elbow by Dynatech®. 1 Piece. Finish: Natural. Material: Mild Steel. Specifically designed for use with Dynatech Dirt Late Model Headers. This is an excellent way to get the exhaust routed inside the...
      Delivers a huge boost in performance and an awesome soundRigorously dyno-tested to provide maximum horsepower and torque gains
      $27.99
    • (0 reviews)
      # 255773604
      Universal Collector Gaskets by JBA®. JBA is proud to offer accessories to aid in the fitment of your JBA exhaust product. This product is made of high-quality materials to serve you for years to come. Designed using...
      JBA's premium header flange gaskets are made extra thick from a specially made formulated gasket materialTheir gaskets are rated up to 1100 F
      $11.97 - $13.70
    • (0 reviews)
      # 231014256
      Universal 4-1 Formed Collectors by Patriot Exhaust®. This superior Patriot EXhaust product is just for you. Carefully designed for maximum performance, is will more than just meet your needs and expectations. This product is built...
      Expertly crafted from premium materialsQuality design and workmanship
      $36.51 - $64.99
    • (0 reviews)
      # 231014349
      Universal Collector Reducers by Patriot Exhaust®. Patriot Exhaust collector reducers are zinc plated to minimize corrosion while providing a weldable finish. All collector reducer kits come with two reducers, gaskets and flange...
      Available in a wide variety of diameters and lengthsZinc plated to minimize corrosion
      $25.04 - $30.69
    • (0 reviews)
      # mpn358950043
      Universal Dome Style Reducer by Patriot Exhaust®. Series: Dome Style. This superior Patriot EXhaust product is just for you. Carefully designed for maximum performance, is will more than just meet your needs and expectations. This...
      Expertly crafted from premium materialsQuality design and workmanship
      $24.91
    • (0 reviews)
      # 231014286
      Universal Exhaust Collector Flange Kit by Patriot Exhaust®. Flange kits include two flanges, gaskets and flange bolts. All round collector flanges include two block off plates and two flanges. 4-gauge flange thickness. Flange kits...
      Available in a variety of diametersWelding Required: Yes
      $12.58 - $16.87
    • (0 reviews)
      # 266461866
      Universal 2 into 1 Y-Pipe Collector by Schoenfeld Headers®. 1 Piece. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $101.03 - $112.26
    • (0 reviews)
      # 266461864
      Universal 3 Bolt Header Collector Flange by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $5.86 - $6.24
    • (0 reviews)
      # 266461865
      Universal Collector Insert Reducer by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $20.77
    • (0 reviews)
      # 266461872
      Universal Slip Over Collector by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous attention...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $44.67 - $221.08
    • (1 review)
      # mpn753352383
      Universal Header Reducer by BTP®. Each. This premium quality part by BTP helps your exhaust system to perform at its full efficiency as well as provide your vehicle with a more aggressive and powerful sound. This part is made from...
      Engineered to make your exhaust system perform at its peakProvides a powerful and aggressive sound
      $10.25
    • (0 reviews)
      # 266461831
      Universal Ball-Socket Exhaust Flange Kit by Hedman Hedders®. Ball & Socket Header Flange Kits allow you to convert a gasket style, or race style header collector to a gasket-free Ball-Style Collector. Hedman’s gasketless, Ball &...
      Available in 304 Stainless Steel, Aluminized Steel, Mild SteelEasy to Install
      $26.79 - $152.89
    • (0 reviews)
      # 266461804
      Universal Header Reducers by Hedman Hedders®. Hedman reducers (exhaust system adapters) weld on to your exhaust system, so you can easily bolt up your Hedman Hedders to the vehicle’s exhaust.
      Available in Mild Steel, Aluminized Steel or Stainless SteelAll necessary hardware included
      $19.43 - $51.27
    • (0 reviews)
      # 266461856
      Universal Husler Race Hedder Reducers by Hedman Hedders®. Many of Hedman's newer hedder models utilize a ball & socket style collector. If your Hedman Hedders have thisstyle of collector they do not require a gasket.
      Made of High Quality MaterialsBuilt to Last
      $25.02 - $28.68
    • (0 reviews)
      # 266461860
      Universal Mild Steel Header Collectors by Hedman Hedders®. This Hedman Hedders product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the highest level...
      Designed to boost your vehicle's performanceMade from high-quality materials
      $45.51 - $205.38
    • (0 reviews)
      # 171670489
      Universal Ball and Socket Connector by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Kooks will last a...
      Made of high Quality MaterialsDesigned to match rigorous quality standards
      $58.16 - $257.36
    • (0 reviews)
      # 171670471
      Universal Collector by Kooks®. With 9-10" long body. Plus 2" for slip on stub section. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $118.93 - $434.57
    • (0 reviews)
      # 171670709
      Universal Collector Weld-On Reducer Cone by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Kooks will...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $16.40 - $53.30
    • (0 reviews)
      # 142860869
      Universal Terminator™ Reducer Street Hookup by Flowtech®. 3-Bolt. Terminator fully-welded reducers/street hookups are designed to be used behind three-bolt design collectors and help make any header installation complete.
      Fully-welded constructionDurable 16 gauge construction
      $39.48
    • (0 reviews)
      # mpn1673775281
      Universal Exhaust Manifold Flange by Vibrant Performance®. Thickness: 0.375". Thickness: 0.375". Do you want to get more power out of your vehicle? Then this superior Vibrant Performance product is just for you. Carefully designed...
      Made of High Quality MaterialsAvailable in different sizes
      $146.21
    • (0 reviews)
      # mpn458111276
      Universal J-SPEC Header Outlet Flange Kit by Vibrant Performance®. This kit consists of a 2-bolt connecting flange (with a flared outlet neck) and a 2.5" Inlet Diameter donut style Graphite Gasket. Features 45 mm O.D. primaries...
      Made of High Quality MaterialsDirect Fit
      $48.09
    • (0 reviews)
      # 171670484
      Universal Collector Gasket by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Kooks will last a lifetime....
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $13.69
    • (0 reviews)
      # 171670688
      Universal Exhaust Gasket by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Kooks will last a lifetime....
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $13.69 - $28.12
    • (0 reviews)
      # 171670635
      Universal Steel Exhaust Flange 3" by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Kooks will last a...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $13.17 - $98.42
    • (0 reviews)
      # 266461774
      Universal Real-Seal™ Collector Gasket Kit by Flowtech®. Series: Real-Seal™. Flowtech Real-Seal collector gaskets are a revolutionary break-through exhaust sealing technology. Constructed of separate layers of "Dead Soft"...
      Multi-Layer "Dead Soft" aluminum conforms to create a leak proof sealWater - Weather Resistant
      $21.79 - $23.88
    • (0 reviews)
      # mpn21030416
      Universal Compressed Ceramic Fiber Exhaust Gasket Material by Spectre Performance®. Includes: 1 Gasket. Material: Compressed Ceramic Fiber. Rooted in racing, Spectre Performance designs and builds every product with the same goal...
      Designed to boost your vehicle's performanceMade from high-quality materials
      $11.11




    2011 GMC Sierra Denali Performance Headers Reviews

    Average rating:  4.5  4.5 - 39 reviews
    5 of 5
    CanAmMex® 00747-212 - Thunderbolt™ Hi-Polished Single Rolled Angled Oval Tip
    These appear to be of very good quality, good welds.
    JPosted by John (Enfield, CT) / February 24, 2016
    Was this review helpful for you? Yes
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