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Porsche > 911 & 912 (1965-1989) > 911 1965-1968 2.0L / 912 SWB (F) > Exhausts >

2 IN / 1 OUT
Sport Silencers

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DISPLAYING 1 to 5 (of 5 products)
Exhaust muffler / silencer rear box 60mm oulet. SSI Porsche 911 65-73 With TÜV/EEC approval - 1620611200, 92.210SSI, 92210SSI, 90111101105, 91111110200, 91111102500, 91111102505
2
Exhaust muffler / silencer rear box 60mm oulet. SSI Porsche 911 65-73 With TÜV/EEC approval
1620611200
Product Information
Product Information
Rear exhaust, Stainless steel. With TÜV/EEC approval, Single tailpipe, Pipe Ø 60 mm.

ssi

Fits:
Porsche 911 S (mech. injection) 2.4L 08/71-07/73
Porsche 911 T/E/S (not mech.injection) 2.0L-2.4L 01/63-12/73

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Related, superseded, cross reference or alternative numbers for comparison.

1620611200
1620611200
92.210SSI
92210SSI
90111101105
91111110200
91111102500
91111102505

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Rear box Racing. Porsche 911 1965-73 2 IN / 2 OUT 70mm outlet - RACING only - 92.212, 92212, 1620607000, 91111102500, 91111102505 - 92.212, 1620607000
3
Exhaust Muffler / Silencer Rear box Racing. Porsche 911 1965-73 2 IN / 2 OUT 70mm outlet - RACING only
91122092212
Product Information
Product Information
Racing exhaust, NO STREET USE. Ø 70mm tail pipes
Painted steel.

NOTE: 91122092212 needs to be fitted the exhaust on 1623101970 and 1623101980.

danskmotorsport

Fits:
Porsche 911 T/E/S 2.0-2.4L 1964-73
Porsche 911 /S/CARRERA 2.7L 1974-76

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Related, superseded, cross reference or alternative numbers for comparison.

91122092212
92.212
92212
1620607000
91111102500
91111102505

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Rear box. Porsche 911 1963-73 2 IN / 1 OUT With TÜV/EEC approval - 91111102505, 91111102500, 1620612800, 92.510SSI - 1620612800
3
Exhaust Muffler / Silencer Rear box. Porsche 911 1963-73 2 IN / 1 OUT With TÜV/EEC approval
91111102505/2
Product Information
Product Information
SSi Rear Exhaust, 2 in - 1 outlet, Sport, single 70 mm outlet, stainless steel, polished.
With TÜV/EEC approval

ssi

Fits:
Porsche 911 S (mech. injection) 2.4 08/71-07/73
Porsche 911 T/E/S (not mech.injection) 2.0-2.4 01/63-07/73

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Related, superseded, cross reference or alternative numbers for comparison.

91111102505
91111102505
91111102500
1620612800
92.510SSI

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Rear box. With TÜV/EEC approval Porsche 911 1965-73 2 IN / 1 OUT 60mm outlet - 92210S, 92210, 92210OE, 1620607600, 1620609000, 1620607800, 91111102500, 91111102505, 91122092210S, 91122092210, 91122092210OE - 1620607800
1
Exhaust Muffler / Silencer Rear box. With TÜV/EEC approval Porsche 911 1965-73 2 IN / 1 OUT 60mm outlet
91122092210S
Product Information
Product Information
Twin inlet & single, Ø60mm outlet, Stainless Steel, polished. Standard replacement rear Exhaust for Non Impact bumper cars. 

With TÜV/EEC approval.

dansk   tuv

Fits:
Porsche 911 T/E/S 2.0L-2.4L 1964-73
Can be used with SSI or standard straight through heat exchanger systems

2 x Exhaust gaskets required Part No. 90111119300



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

91122092210S
92210S
92210
92210OE
1620607600
1620609000
1620607800
91111102500
91111102505
91122092210S
91122092210
91122092210OE

The product you are viewing cross references to these numbers
Exhaust muffler / silencer with wrinkled design outlet. Porsche 911 1966-67 - 91111102500, 91111102505, 92.210Cearly, 1620614400 - 1620614400
5
Exhaust muffler / silencer with wrinkled design outlet. Porsche 911 1966-67
91111102500/3
Product Information
Product Information

Exhaust muffler with twin inlet & single, grey painted, wrinkle design outlet and chrome tailpipe. Early OEM style heat shield
Standard replacement rear Exhaust for Non Impact bumper cars.

dansk

Fits:
Porsche 911 2.0ltr - August 1966 to July 1967

Mild steel, wrinkle design tailpipe with chrome, flat rolled trim
Heat protection and noise reduction only on top shield
Indentation on pullet side

Manufactured in 1.5mm aluminised mild steel and finalized in heat resistant grey paint. Heat shield on top side is manufactured in 1.0 mm aluminised mild steel. 2 mm inlay of ceramic heat and sound deadening material. The exhaust is manufactured according to early OEM "Leistritz" design.

2 x Exhaust gaskets required Part No. 90111119300



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

91111102500
91111102500
91111102505
92.210Cearly
1620614400

The product you are viewing cross references to these numbers
DISPLAYING 1 to 5 (of 5 products)
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About 2 IN / 1 OUT
Sport Silencers

Porsche 2 IN / 1 OUT Sports Silencers - Balanced Performance & Sound Upgrade

2 IN / 1 OUT Sports Silencers are performance exhaust components designed to merge exhaust flow from dual inlet pipes into a single outlet, optimising exhaust gas velocity while enhancing sound quality. This configuration is commonly used on Porsche models with dual exhaust banks, providing balanced flow, improved efficiency, and a refined yet sporty exhaust note.

Available from Design911, Porsche 2 IN / 1 OUT sports silencers are engineered to reduce backpressure, improve throttle response, and deliver a deeper, more engaging exhaust sound without compromising everyday usability.

What Do 2 IN / 1 OUT Sports Silencers Do?

These sports silencers manage exhaust flow by combining two exhaust streams into one outlet.

Core Functions:

  • Merge dual exhaust flows efficiently.
  • Reduce exhaust restriction and backpressure.
  • Improve exhaust gas velocity. 
  • Enhance exhaust tone and character. Support improved engine breathing and response.

Efficient exhaust flow management is key to both performance and sound refinement.

Why Do Standard Exhaust Silencers Fail?

Factory silencers are designed primarily for noise suppression and emissions compliance. Over time, they can suffer from:

  • Internal corrosion due to heat and condensation.
  • Restrictive internal baffling limiting performance.
  • Rattling or collapsed internal components.
  • Increased backpressure as components degrade.
  • Reduced compatibility with performance upgrades.

Failing silencers can cause power loss, poor exhaust tone, and unwanted noise.

Why Upgrade to a 2 IN / 1 OUT Sports Silencer?

Performance sports silencers are designed to enhance both efficiency and sound.

Upgrade Benefits:

  • Improved exhaust flow and reduced backpressure.
  • Deeper, more refined sporty exhaust tone.
  • Enhanced throttle response and drivability.
  • Optimised flow for dual-bank engine layouts.
  • Durable construction for long-term performance use.

Upgrading delivers a noticeable improvement in exhaust performance and driving enjoyment.

Highlights

  • Porsche 2 IN / 1 OUT sports silencer upgrades
  • Optimised flow for dual exhaust systems
  • Improved performance and exhaust tone
  • Designed for road and performance driving
  • High-quality materials for durability       

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