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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15
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Description
Racing Dynamics Muffler Bypass Pipe / Porsche 911 C2/4 89-94Primary muffler bypass pipe, Porsche 911 C2 4 1989 94 (964); Carrera Cup tube. Features: Top quality mandrel bent polished 304 stainless steel pipe that replaces the primary muffler. This muffler is located at the back of the engine just in front of the rear valance. This power tube reduces the rear end weight by 25 lbs. Can be used alone or combine with secondary muffler bypass pipe, part number 964. 14. 36. 001, for the best bang for the buck
Primary muffler bypass pipe, Porsche 911 C2/4 1989-94 (964); Carrera Cup tube.Features:
- Top quality mandrel bent polished 304 stainless steel pipe that replaces the primary muffler. This muffler is located at the back of the engine just in front of the rear valance.
- This power tube reduces the rear end weight by 25 lbs.
- Can be used alone or combine with secondary muffler bypass pipe, part number 964.14.36.001, for the best bang-for-the-buck upgrade and aggressive Carrera Cup car sound!
- Replacement of the primary muffler with this test pipe gives about 15 HP abd 13 foot lbs. of torque.
- Can be installed without need to reprogramming ECU.
Application List:
- Porsche 964 Carrera 2 1990-1994
- Porsche 964 Carrera 4 1989-1994
- Porsche 964 RS America 1992-94
- Porsche 964 turbo look 1991-94
- Porsche 964 Cup 1990-93
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Smooth
Size: Medium, Color: White
Fit is good. Material good
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Reviewed in the United States on May 6, 2026
★★★★★ 5
My absolute favorite boxers ever
Size: XX-Large, Color: White
I'm not a man, but I'm a nonbinary person with a big bottom and have tried many quality boxer brands over the years (including the unisex brands). These are my absolute favorite brand of boxers. They're super comfortable. It's taking me a while because I just keep forgetting to stock up but they are replacing all of my other boxers.
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Reviewed in the United States on March 8, 2026
★★★★★ 3
Too large
Size: Medium, Color: Burgundy,lake Blue,dazzling Blue,bijou Blue
Nice but medium size was just too large. Suggest ordering one size smaller.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
quality fabric and custom fit
Size: Large, Color: Cerise,orange,yellow,light Blue
excellent fit and fabric. This is my second order of this product
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Reviewed in the United States on February 25, 2026
★★★★★ 5
Good fitting support !
Size: Medium, Color: White
Just what the man needed. Very good contoured support. No jostling. Not a loose potato sack after an hour of wearing this. Highly recommended. Compare? Hanes, for example. Even the Jockey brand. Put those on, they're tight fitting, seemingly supportive. But they're not. They aren't contoured to fit. That's the whole idea. Contoured, to fit. And stay fitted. The trunk type, just like this wirarpa, and in half an hour it's loose loose loose fitting. A potato sack. No support. No support at all. That's not what a trunk brief is supposed to do. It's supposed to support, give comfort and confidence, stay in place feeling. Assuredness. And this wirarpa Mens Trunk does the job ! Wash and wear and wash and wear. Stays in shape, never gets stretched out and loose, for the fit.
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Reviewed in the United States on May 29, 2024