How much power does the Fabspeed RSR Header Muffler Kit add to a 964?

Fabspeed measures 29 horsepower and 24 lb-ft over the factory system, along with 38 pounds of weight saved. The gain comes from equal-length header tubes and high-velocity merge collectors working together, so it arrives as a stronger midrange pull rather than a narrow peak at the top of the rev range.

Will this kit fit my 964 Carrera?

Yes. It fits 964 Carrera models built from 1989 to 1994, including the Carrera 2, Carrera 4, Carrera RS, RS America and Speedster, all running the 3.6 litre flat-six. The kit replaces the factory headers and muffler as a system, so the whole rear section is addressed in one installation.

Do I lose cabin heat with this system?

Only if you choose to. The kit is offered with or without the heat exchange option, and the heat exchange version keeps the car's heating running off the headers the way the factory system does. Owners running the car on track or in warm climates year round often take the version without it.

What is the difference between the oval tips and the competition muffler outlets?

The deluxe oval tips are the finished road-car look, polished and rolled to match the rear valance. The angle-cut competition muffler outlets are the race-style option, cut straight off the muffler with no decorative tip. Both are supplied as part of the kit, so the choice is made at order rather than bought separately.

Does the rear bumper really need modifying?

Yes, slightly. The second outlet sits where the factory bumper has no opening, so a small modification is needed for the outlet to sit correctly. It is a known part of fitting a dual-outlet system to a car that left the factory with one, and it is worth having the fitting shop plan for it rather than discovering it on the lift.

This is the loudest of Fabspeed's 964 exhaust options and it is described by Fabspeed as a loud and aggressive sports car sound. Owners wanting the RSR character with less volume should look at the muffler bypass and Maxflo routes instead. Fabspeed does not publish a decibel figure for this system.

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Description

Fabspeed RSR Header Muffler Kit for 964 Porsche 911 Carrera

Fabspeed’s RSR Header Muffler Kit is the change that makes a 964 sound and pull like the car Porsche only built in small numbers. The kit replaces the factory headers and muffler in one move with equal-length mandrel-bent tubing, F1-style investment-cast merge collectors and a dual-outlet muffler, and it is engineered, dyno tested and raced in-house at Fabspeed in Fort Washington, Pennsylvania. Fabspeed measures 29 horsepower and 24 lb-ft on top of stock, with 38 pounds taken off the back of the car in the process. It is the loudest and the most complete of the 964 exhaust routes, and for an owner who bought an air-cooled 911 to drive it hard, it is the one that changes the character of the car rather than decorating it.

Bolt-On and Go

Fabspeed builds the RSR Header Muffler Kit as a bolt-on system, with no cutting or welding required and the factory mounting points retained. Two things are worth planning for: the second outlet needs a small modification to the factory rear bumper to sit correctly, and every exhaust fastener wants re-torquing to the OEM specification after the first full heat cycle, which is what keeps the header flanges sealed for the life of the system.

Features

Loud and aggressive sports car sound, the most vocal of Fabspeed’s 964 exhaust options
RSR-style one-piece equal-length mandrel-bent header tubes
F1-style high-velocity 3-into-1 investment-cast merge collectors
14-16 gauge T304L stainless steel construction
Dual-outlet muffler system supplied with all required hardware
Order with or without the heat exchange option, and with or without sport cats
Choice of deluxe oval tips or angle-cut competition muffler outlets
Bolt-on installation with no cutting or welding
Backed by the Fabspeed lifetime warranty

Specifications

Horsepower gain: 29 hp over the factory system
Torque gain: 24 lb-ft over the factory system
Weight reduction: 38 pounds
Material: T304L stainless steel
Wall gauge: 14-16 gauge
Header design: one-piece equal-length mandrel-bent tubes
Collectors: 3-into-1 investment-cast merge
Outlets: dual

What’s Included

RSR-style equal-length headers with merge collectors
Dual-outlet muffler
Deluxe oval tips or angle-cut competition muffler outlets, per the option selected
All required mounting hardware
Heat exchange components and sport cats, when those options are selected

Applications

Porsche 911 Carrera 2: 964 | 1990-1994 | 3.6L F6
Porsche 911 Carrera 4: 964 | 1989-1994 | 3.6L F6
Porsche 911 Carrera RS: 964 | 1992-1993 | 3.6L F6
Porsche 911 RS America: 964 | 1993-1994 | 3.6L F6
Porsche 911 Speedster: 964 | 1993-1994 | 3.6L F6

Notes

Requires slight modification to the factory rear bumper for proper fitment of the second outlet
After the initial heat cycle, tighten all exhaust bolts to the OEM torque specification to keep the header seal
Ordering the heat exchange option keeps the Carrera’s cabin heating running off the headers, exactly as the factory system does
Optional RSR muffler bypass pipes are available for further weight saving and a harder sound, on systems ordered without sport cats
All Fabspeed products are expected to ship within one week of order, and timelines are often much quicker

Frequently Asked Questions

How much power does the Fabspeed RSR Header Muffler Kit add to a 964? Fabspeed measures 29 horsepower and 24 lb-ft over the factory system, along with 38 pounds of weight saved. The gain comes from equal-length header tubes and high-velocity merge collectors working together, so it arrives as a stronger midrange pull rather than a narrow peak at the top of the rev range.
Will this kit fit my 964 Carrera? Yes. It fits 964 Carrera models built from 1989 to 1994, including the Carrera 2, Carrera 4, Carrera RS, RS America and Speedster, all running the 3.6 litre flat-six. The kit replaces the factory headers and muffler as a system, so the whole rear section is addressed in one installation.
Do I lose cabin heat with this system? Only if you choose to. The kit is offered with or without the heat exchange option, and the heat exchange version keeps the car’s heating running off the headers the way the factory system does. Owners running the car on track or in warm climates year round often take the version without it.
What is the difference between the oval tips and the competition muffler outlets? The deluxe oval tips are the finished road-car look, polished and rolled to match the rear valance. The angle-cut competition muffler outlets are the race-style option, cut straight off the muffler with no decorative tip. Both are supplied as part of the kit, so the choice is made at order rather than bought separately.
Does the rear bumper really need modifying? Yes, slightly. The second outlet sits where the factory bumper has no opening, so a small modification is needed for the outlet to sit correctly. It is a known part of fitting a dual-outlet system to a car that left the factory with one, and it is worth having the fitting shop plan for it rather than discovering it on the lift.
How loud is it? This is the loudest of Fabspeed’s 964 exhaust options and it is described by Fabspeed as a loud and aggressive sports car sound. Owners wanting the RSR character with less volume should look at the muffler bypass and Maxflo routes instead. Fabspeed does not publish a decibel figure for this system.

About Fabspeed

Fabspeed Motorsport builds its exhaust hardware in Fort Washington, Pennsylvania, out of a 26,000 square foot facility that doubles as a gathering point for the Porsche Club of America, Ferrari, McLaren and Lamborghini clubs. Every product is designed, engineered, dyno tested, street driven and raced in-house rather than farmed out, and the company works directly with race engine builders and tuners in Italy, Germany and the United States. Systems are fabricated from aerospace-grade austenitic stainless steel, titanium and carbon fiber, and every Fabspeed performance part carries the company’s lifetime warranty.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Fabspeed RSR Header & Muffler Kit for 964 Porsche 911 Carrera [FS.POR.964.RSRWXXX]

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Fabspeed RSR Header Muffler Kit for 964 Porsche 911 Carrera

Bolt-On and Go

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About Fabspeed

Reviews