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- USA
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Ships within 48 hours · Estimated delivery Sep 18 - Sep 23
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For Your Every Summer RSVP, with Code: SUMMER15
Description
1979-1989 Ford F Performance Muffler Flowmaster Stainless SteelOverview: This two chamber design incorporates Flowmaster's Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability. Features: Improved Horsepower, Torque and Engine Efficiency Excellent choice for Street Rod cars and
Overview:
This two chamber design incorporates Flowmaster's Delta Flow® technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
Features:
Specs:
Applications:
- 1979-1989 Dodge D100 318 CID
- 1979-1988 Dodge D100 360 CID
- 1988-1989 Dodge D100 239 CID
- 1979-1992 Dodge D150 318 CID
- 1979-1991 Dodge D150 360 CID
- 1988-1992 Dodge D150 239 CID
- 1981-1992 Dodge D250 318 CID
- 1981-1992 Dodge D250 360 CID
- 1988-1992 Dodge D250 239 CID
- 1979-1980 Dodge D300 360 CID
- 1979-1980 Dodge D300 318 CID
- 1981-1992 Dodge D350 360 CID
- 1981-1983 Dodge D350 318 CID
- 1986-1989 Dodge W100 318 CID
- 1986-1988 Dodge W100 360 CID
- 1989-1989 Dodge W100 239 CID
- 1979-1992 Dodge W150 318 CID
- 1979-1991 Dodge W150 360 CID
- 1989-1992 Dodge W150 239 CID
- 1981-1992 Dodge W250 318 CID
- 1981-1992 Dodge W250 360 CID
- 1981-1992 Dodge W350 360 CID
- 1982-1983 Dodge W350 318 CID
- 1990-1991 Dodge Dakota 239 CID
- 1990-1991 Dodge Dakota 318 CID
- 1979-1983 Jeep CJ5 258 CID
- 1979-1981 Jeep CJ5 304 CID
- 1979-1986 Jeep CJ7 258 CID
- 1979-1981 Jeep CJ7 304 CID
- 1962-1970 Plymouth Belvedere 383 CID
- 1962-1970 Plymouth Belvedere 225 CID
- 1962-1970 Plymouth Belvedere 318 CID
- 1962-1966 Plymouth Belvedere 361 CID
- 1962-1964 Plymouth Belvedere 413 CID
- 1963-1969 Plymouth Belvedere 426 CID
- 1964-1968 Plymouth Belvedere 273 CID
- 1966-1967 Plymouth Belvedere 440 CID
- 1965-1967 Plymouth Belvedere II 225 CID
- 1965-1967 Plymouth Belvedere II 273 CID
- 1965-1967 Plymouth Belvedere II 318 CID
- 1965-1967 Plymouth Belvedere II 426 CID
- 1965-1967 Plymouth Belvedere II 383 CID
- 1966-1966 Plymouth Belvedere II 361 CID
- 1967-1967 Plymouth Belvedere II 440 CID
- 1964-1965 Chevrolet Corvette 327 CID
- 1974-1982 Chevrolet Corvette 350 CID
- 1980-1980 Chevrolet Corvette 305 CID
- 1983-1993 Chevrolet S10 173 CID
- 1983-1985 Chevrolet S10 119 CID
- 1983-2002 Chevrolet S10 134 CID
- 1983-1984 Chevrolet S10 122 CID
- 1985-1993 Chevrolet S10 151 CID
- 1988-2002 Chevrolet S10 262 CID
- 1994-1996 Ford F-250 445 CID
- 1997-1998 Ford F-250 330 CID
- 1994-1997 Ford F-350 445 CID
- 2000-2006 Toyota Tundra 285 CID
- 2005-2006 Toyota Tundra 241 CID
Emissions:
- This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
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
4.5 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
My favorite underwear
Size: Medium, Color: Multicoloured C (5-pack)
Super comfortable!! They are soft and breathable. No pinching, no shifting, and relatively invisible in skirts, pants, and loose dresses. True to size. Excellent quality, holds up well. Only thing is that the wording on the front does come off after a few washes, so you have to differentiate the front from the back of the underwear by how high the seam comes up. I almost exclusively wear this underwear now, I love it!
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Incredible Comfort
Size: Large, Color: Multicoloured F (5-pack)
Amazing; I’ll be ordering more. Super soft, lightweight, smooth under clothes, incredible comfort! Best underwear! I ordered these because I’m tired of underwear lines when wearing biker shorts/leggings. Other boy shorts were too long or the bottom hem too thick and both of those issues left lines around my upper leg. THESE are *just right* - perfect length and fit. No panty lines on close fitting pants, comfortable under other pants and dresses, great with jumpsuits, and fit well under slip shorts with dresses.
NOTE: These take longer to dry, than similar clothes, in the dryer. No shrinking though.
SIZE: I ordered these in size L and they fit perfectly. A little snug when first on but they loosened up. For reference I’m 5’4” tall, about 175#, carry my weight in my hips and backside,wear size L sweats/pajamas/loose pants, size 12 jeans.
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Reviewed in the United States on September 23, 2025
★★★★★ 5
Full coverage and full comfort
Size: XX-Large, Color: Multicoloured C (5-pack)
These boyshort underwear are a dream. They’re very soft, very stretchy, and very comfortable. They do not shrink when they’re washed. They’re heavy enough to make you feel like you have something covering you for discretion, but light enough to wear under any type of fabric. I have wide hips and I’m older so I don’t have a tight perky butt anymore. Most underwear tend to either ride up on me or become very uncomfortable. These stay where you put them. And they come all the way up to your waist so that there is no panty line whatsoever. The waist line is soft and comfortably. It does not dig in. They do not ride up and drive you crazy they stay where you put them. I would recommend them to anyone young or old. I have tried so many different styles and materials to find underwear that’s actually comfortable. These are the absolute best I have tried in five years. I just threw all the rest of them out.
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Reviewed in the United States on April 8, 2026
★★★★★ 4
Bamboo is an amazing fabric
Size: Large, Color: Multicoloured I (5-pack)
Comfy and soft . I’ve never worn boy shorts before so takes adjusting to. Legs roll sliding pants up but easy to adjust and smooth before zipping up then all day comfort. When I wear skirts or shorts they are perfect for that! I use to wear bike pants under skirts that don’t have to anymore. I like that they don’t creep up like regular underwear. I’m a new fan of bamboo fabric and bought briefs in bamboo as well.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
The softest, stretchiest, perfect underwear!
Size: Large, Color: Multicoloured F (5-pack)
I have struggled for years to find underwear that didn't ride up. I like bamboo, but had the same problem with them. These Bamboo Cool Boyshorts not only solved my problem, but they are so soft and stretchy that it almost feels sensual pulling them on. They never ride up, roll down, they fit perfectly, and are always super comfortable. I even persuaded my husband to buy the men's version and he loves them too. And I should add, I never write reviews!
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Reviewed in the United States on April 25, 2026