Please wait… 
Please wait while we process your order,
do not press the back button… 
Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk Facebook Instagram
Your Vehicle  //  Porsche  //  991 (911) MK2 2016-2019  //  991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
Porsche991 (911) MK2 2016-2019991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19Exhausts

Brackets / Clamps / Straps

Brackets / Clamps / Straps

Filter by brand
DISPLAYING 1 to 5 (of 5 products)
Exhaust bolt repair kit for Porsche DFI Engines on 911/997/991/ Boxster & Cayman (9A1) - SR069
1
Exhaust bolt repair kit for Porsche DFI Engines on 911/997/991/ Boxster & Cayman (9A1)
SR069
Product Information
Product Information
Exhaust bolt repair kit for Porsche DFI Engines on 911/997/991/ Boxster & Cayman (9A1) 2009-Onwards

Holy broken bolts Batman! Even the latest generation of DFI (9A1) heads on the water-cooled engines are reporting broken exhaust bolts. Tasks ranging from a simple exhaust system update through an engine removal, are consistently plagued by snapped, rusted, and broken exhaust manifold bolts. Rarely can an accurate removal of the broken bolt be performed with the engine in the car, and even after removal, the task is time consuming and if not done carefully can lead to a damaged head or faulty repair. STOMSKI RACING's answer to these problems is the SR069, a kit that easily, accurately, and flexibly allows you to drill out the broken bolts - with the engine still in the car- saving time and headaches. A CNC milled plate indexes precisely off the broken bolts and/or bolt holes. Using our uniquely designed Thumb Screws, the SR069 plate is locked in place (by threading a Thumb Screw over a broken bolt or by using a supplied bolt threaded through the SR069 Thumb Screw). With the included pilot drills and drill guides, the faulty bolt can be drilled out, producing a perfectly perpendicular and centered hole that if necessary can be chased with an included M8x1.25 tap.

Kit includes anodized aluminum fixture, drill bits, tap with extension, drill jigs/guides, Thumb Screws, and hardware in a sturdy storage case. Also includes our SR065D drill guide.
Exhaust Clamp, V-Band. Porsche 991.2 GT3 / GT3 RS / Speedster 4.0L Left and Right - 9GT251616B, 9GT251616C
2
Exhaust Clamp, V-Band. Porsche 991.2 GT3 / GT3 RS / Speedster 4.0L Left and Right
Special Order item
9GT251616
Product Information
Product Information

Genuine Porsche V-band exhaust clamp for GT3, GT3 RS and Speedster with 4.0L engines. Please choose either Left or right, it fastens an adjoining exhaust connection.

Fits

  • Porsche 991 GT3/RS/GT-Speedster 2014-2021
  • Porsche 992 GT3/RS/ST 2021-2025
  • Porsche 992 GT3 2025>>

     Check fitment for your specific vehicle (model, year, engine) before ordering.

    Diagram Ref no 19 & 20


What This Product Does

The V-band fastening draws the mating exhaust components together around their joint. Clamping pressure helps hold the connection in position and supports sealing when the adjoining surfaces and associated seal are serviceable.

Functions

  • Fastens the mating exhaust connection.
  • Helps retain alignment at the joint.
  • Applies circumferential pressure to support sealing.

    Technical Details
  • Component identification: exhaust clamp.
  • Fastening type: V-band.
  • Supplied diagram quantity: 1 in each referenced assembly.

    Symptoms of Fault
  • Ticking or blowing audible near the connection.
  • Black soot traces surrounding the joint.
  • A clamp that cannot tighten correctly.
  • Joint movement, uneven positioning or rattles.
  • Noticeable exhaust odour around the affected connection.

    These signs warrant inspection; they do not establish that the clamp alone is responsible.

    Why Replacement Matters

Corrosion, deformation or damaged fastening hardware can reduce the clamp's ability to grip. Renewing a defective clamp helps re-establish the intended fastening arrangement. Before reassembly, examine the adjoining flanges, sealing components and supporting hardware: fitting a new clamp will not correct damaged mating surfaces or poor alignment.

FAQs

Is the component genuine Porsche?
The supplied product information identifies it as genuine Porsche, reference 9GT251616B (left) & 9GT251616C (Right)

Does the diagram quantity describe a complete kit?
No. The quantity identifies one clamp in each referenced assembly; it does not indicate that neighbouring components are included.

What needs checking before installation?
Inspect the connection surfaces, seal and surrounding supports for damage or corrosion. Follow the applicable Porsche repair instructions for assembly and tightening.

How can I verify the application?
Compare the listed models and engine specification with your vehicle, then confirm reference 9GT251616B & 9GT251616C against its VIN where necessary.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9GT251616
9GT251616B
9GT251616C

The product you are viewing cross references to these numbers
Exhaust muffler clamp. Porsche 997 GT3 / 991 GT3 / Carrera GT - 99711133690
3
Exhaust muffler clamp. Porsche 997 GT3 / 991 GT3 / Carrera GT
99711133690/1
Product Information
Product Information
Front muffler clamp (OE part reference 997.111.336.90) — used to secure the front/centre muffler sections on 911 GT3 / GT3 RS and compatible Porsche 997 / 991 fitments. Built to the factory dimensions for a leak-free connection and correct exhaust alignment.
Price is Each

Fits:
Porsche Carrera GT 2004 - 2006
Porsche 997 GT3 2007 - 2009
Porsche 997 GT3 / GT3 RS / GT3 RS 4.0 2010-11
Porsche 991 GT3 / GT3 RS 2014-18
Porsche 991 R 2016

Diagram ref no 5

Why Replace Your Exhaust Clamp

  • Restore a perfect, leak-free seal
  • Over time, exhaust clamps can deform, corrode, or lose their clamping strength. Replacing the clamp ensures a secure joint between muffler sections, preventing exhaust leaks, restoring proper back pressure, and maintaining optimal engine performance.
  • Eliminate rattles and vibration noise
  • Worn or loose clamps are a common cause of rattles, buzzing, or vibration noises from the rear underside of 997 and 991 models. Installing a new clamp is often one of the quickest and most cost-effective ways to eliminate these irritating sounds.
  • Factory specifications fitment for performance models


Common Issues and Failure Modes

  • Corrosion and rust
  • Exhaust clamps and fasteners are exposed to heat, moisture, and road salt. Over time, this can lead to corrosion or seizure, reducing clamping force and risking exhaust leaks.
  • Clamp fatigue or deformation
  • Repeated heat cycles and vibration can cause the clamp sleeve or bolt to distort, leading to a loose connection and exhaust blow-by.
  • Incorrect fitment or short sleeves
  • Noise from over-tightening
  • Applying excessive clamping force can alter vibration characteristics and introduce new noises. Always follow correct installation torque and alignment procedures.


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99711133690
99711133690

The product you are viewing cross references to these numbers
Exhaust muffler clamp. Porsche 997 GT3 / Carrera GT / 991 GT3 - 99711133690
3
Exhaust muffler clamp. Porsche 997 GT3 / Carrera GT / 991 GT3
Special Order item
99711133690
Product Information
Product Information
Exhaust muffler clamp. Sold each.

Fits:
Porsche Carrera GT 2004-06
Porsche 997 GT3 2007-09
Porsche 997 GT3 / GT3 RS / GT3 RS 4.0 2010-11
Porsche 991 GT3 / GT3 RS 2014-18
Porsche 991 R 2016

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99711133690
99711133690

The product you are viewing cross references to these numbers
Silencer bracket Damper. Porsche 996 / 996 GT3 - 99611122900
2
Silencer bracket Damper. Porsche 996 / 996 GT3
Special Order item
99611122900
Product Information
Product Information
Silencer bracket Damper. Porsche 996 / 996 GT3

Fits:
Porsche 996 GT3 2000-05
Porsche 997 GT3 2007-11
Porsche 991 GT3 2013-17
Porsche 991 GT3 RS / R 2014-17
Porsche 991.2 GT3 / RS 2017-20 (not for Speedster)

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99611122900
99611122900

The product you are viewing cross references to these numbers
DISPLAYING 1 to 5 (of 5 products)
Also found on these pages
About Brackets / Clamps / Straps

Exhaust Mounting Brackets, Straps & Clamps – Secure, Silent & Strong

A Porsche exhaust system relies on more than just pipes and silencers — it’s held together by a network of mounting brackets, straps, and clamps that keep everything securely in place. These essential components absorb vibration, maintain correct alignment, and prevent stress or damage to exhaust pipes and mufflers.

At Design911, we stock a full range of exhaust mounting hardware, including brackets, hangers, straps, clamps, gaskets, and fasteners, all designed for long-lasting durability and a perfect fit. Built from high-strength stainless steel and corrosion-resistant materials, these components ensure your exhaust system remains properly supported and free from unwanted noise or movement.

Whether you’re performing a full exhaust replacement or a minor repair, replacing worn or rusted mounting hardware restores proper fitment and protects your Porsche’s exhaust from damage caused by vibration or misalignment.

What Do Exhaust Mounting Brackets, Straps & Clamps Do?

These small but vital parts provide the backbone for your exhaust system’s stability and integrity.

Core Functions:

  • Secure the exhaust system to the vehicle chassis.
  • Maintain correct alignment to prevent strain on joints and flanges.
  • Absorb engine vibration to reduce stress and cracking.
  • Ensure leak-free connections between pipes and silencers.
  • Prevent rattling and unwanted noise during acceleration and cornering.

Without properly functioning brackets and clamps, your exhaust can sag, vibrate, or even detach — risking costly damage and performance loss.

Why Do Exhaust Mounts and Clamps Fail?

Constant heat, vibration, and exposure to the elements make exhaust mounting components prone to wear over time.

Common Causes of Failure Include:

  • Corrosion or rust from road salt and moisture.
  • Metal fatigue caused by heat cycling and vibration.
  • Cracked or stretched straps from repeated stress.
  • Loose or broken clamps leading to exhaust leaks.
  • Rubber mount deterioration resulting in noise or exhaust movement.

Failure of these components can lead to exhaust misalignment, rattling, leaks, or premature pipe damage — issues that worsen quickly if ignored.

Why Replace Components?

Replacing worn or damaged exhaust mounting hardware ensures your Porsche’s exhaust system remains stable, quiet, and free-flowing.

Key Benefits:

  • Restores exhaust alignment and fitment.
  • Prevents damage to mufflers, pipes, and joints.
  • Eliminates rattling, vibration, and leaks.
  • Durable stainless steel and heat-resistant construction.
  • Direct-fit compatibility for all Porsche models, classic and modern.
  • Ideal for maintenance, restoration, or performance upgrades.

A secure exhaust system not only improves comfort and performance but also extends the life of other components — ensuring your Porsche remains refined and reliable.

Highlights:

  • High-quality exhaust brackets, clamps, and mounting straps.
  • Precision-engineered for Porsche fitment and durability.
  • Prevents vibration, movement, and exhaust leaks.
  • Made from corrosion-resistant stainless steel.
  • Perfect for restorations or exhaust maintenance.
  • Ensures long-term stability and quiet operation.

You may also like
Popular Models