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SKU: POR.911.MB
Fabspeed Porsche 911 Carrera Muffler Bypass Pipe with Adjustable Turndown (1976-1989)
This Fabspeed muffler bypass pipe replaces the primary cigar-shaped OEM muffler on Porsche 911 models from 1976 to 1989. It delivers 10+ whp and 8+ ft/lbs torque gains with sharper throttle response and 18-20 lbs weight reduction. The adjustable 90-degree turndown tip controls exhaust volume for track or street driving.
Key Features
- Power Gains: Adds 10+ whp and 8+ ft/lbs torque plus improved throttle response for quicker acceleration
- Sound Profile: Produces very aggressive CUP car exhaust note ideal for aggressive street and track use
- Construction: Built from 14-16 gauge T304 CNC mandrel-bent stainless steel for durability and perfect fit
- Weight Reduction: Saves 18-20 lbs depending on tip option compared to heavy OEM muffler
- Street Legal Design: Catback system legal in all 50 states works with stock cats or Fabspeed catbypass pipes
Product Notes
- Recommended for aggressive street and track use only due to loud exhaust sound
- Direct OEM replacement includes outlet pipe clamp and slip-on adjustable turndown tip
- Easy on and off installation suits weekend track events
Installation Notes
- Professional installation recommended.
- Bolt-on design requires no cutting or welding
- Compatible with factory hardware and Fabspeed catbypass pipes
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1976-1977 | Porsche | 911 | Carrera 3.0L |
| 1978-1983 | Porsche | 911 | SC 3.0L |
| 1984-1989 | Porsche | 911 | Carrera 3.2L |
Why Choose Fabspeed?
- Performance exhaust leader for Porsche vehicles worldwide
- T304 stainless steel construction ensures long-lasting performance
- Backed by Fabspeed Lifetime Warranty on all products
Frequently Asked Questions
-
Q: Does this fit all 1976-1989 Porsche 911 models?
A: Yes fits worldwide 911 Carrera SC and 3.2 Carrera with primary cigar-shaped muffler -
Q: What material is used in construction?
A: 14-16 gauge T304 stainless steel CNC mandrel bent for strength and corrosion resistance -
Q: What warranty applies?
A: All Fabspeed products including this muffler bypass carry Lifetime Warranty
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Securely boxed dimensions 48 x 10 x 10 inches
- Weight: 12 lbs
Fabspeed
Fabspeed Motorsport is a Pennsylvania-based performance parts manufacturer that specializes in exhaust systems, sport catalytic converters, headers, downpipes, intake systems, and carbon fiber components engineered specifically for exotic and high-performance European sports cars including Porsche, Ferrari, Lamborghini, McLaren, BMW M, and Audi R8. Every Fabspeed product is TIG-welded from aerospace-grade stainless steel or titanium in the USA, dyno-tested for measurable power and sound improvement, and designed as a direct bolt-on replacement that preserves the factory catalytic converter monitoring system or provides an explicit sport cat solution for emissions-compliant upgrades. Exotic car owners who have already maximized software and cosmetic modifications choose Fabspeed exhaust systems because the brand's specialty focus on a narrow range of platforms produces fit quality and sound character that universal exhaust manufacturers cannot achieve. The brand's XperTune ECU calibr...
View Fabspeed Products
Porsche Parts & Accessories
Shop Porsche parts and accessories at Black Ops Auto Works for 911, Cayman, Boxster, Macan, Cayenne, Panamera, 718, 996, 997, 991, 992, 986, 987, 981, 982, 964, 993, 944 Turbo, GT3, GT3 RS, GT4, Turbo, Carrera, and performance Porsche builds. This collection includes exhaust systems, muffler bypass pipes, sport cats, downpipes, suspension upgrades, coilovers, sway bars, shocks, struts, brake pads, brake rotors, caliper rebuild kits, carbon fiber exterior parts, intake systems, air filters, cooling parts, wheel spacers, wheel bolts, drivetrain upgrades, engine parts, valve guides, fuel injectors, and Porsche styling accessories. Use this Porsche collection to find the right upgrade by model, chassis code, product category, brand, and driving goal. Exhaust and intake upgrades help improve sound and airflow, brake upgrades support stronger stopping power, suspension parts improve handling and ride control, carbon fiber parts add lightweight styling, cooling parts support demanding driv...
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