Pay in installments of $162.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
1965-1966 Chevrolet Chevelle Exhaust Flowmaster Stainless SteelOverview: The American Thunder Crossmember Back exhaust system is a true dual large 3. 00 inch muscle car system for the person who is looking for a deep aggressive sound for their high horsepower vehicle. This stainless steel system is mandrel bent for maximum performance, includes an H pipe crossover to balance out the exhaust pressures, add hp and torque, and to help eliminate back rap on deceleration. The specially selected Super 40 Series
Overview:
The American Thunder® Crossmember-Back exhaust system is a true dual large 3.00-inch muscle car system for the person who is looking for a deep aggressive sound for their high horsepower vehicle. This stainless steel system is mandrel-bent for maximum performance, includes an H-pipe crossover to balance out the exhaust pressures, add hp and torque, and to help eliminate back-rap on deceleration. The specially selected Super 40® Series performance mufflers feature a large case to handle the added horsepower and provide a deep muscular tone flowing through the large 3.00-inch tailpipes. The American Thunder systems generally deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The sound level will depend greatly on the engine and level of modifications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Covered by our Lifetime Limited Warranty.
Features:
Specs:
Applications:
- 1965-1966 Buick Gran Sport 401 CID
- 1967-1967 Buick Gran Sport 340 CID
- 1967-1967 Buick Gran Sport 400 CID
- 1964-1967 Buick Skylark 300 CID
- 1965-1966 Buick Skylark 401 CID
- 1966-1967 Buick Skylark 340 CID
- 1967-1967 Buick Skylark 400 CID
- 1964-1967 Buick Special 300 CID
- 1966-1967 Buick Special 340 CID
- 1964-1965 Buick Sportwagon 300 CID
- 1966-1967 Buick Sportwagon 340 CID
- 1964-1967 Chevrolet Chevelle 283 CID
- 1964-1967 Chevrolet Chevelle 327 CID
- 1965-1967 Chevrolet Chevelle 396 CID
- 1964-1967 Chevrolet El Camino 283 CID
- 1964-1967 Chevrolet El Camino 327 CID
- 1966-1967 Chevrolet El Camino 396 CID
- 1964-1964 Oldsmobile 442 330 CID
- 1965-1967 Oldsmobile 442 400 CID
- 1964-1967 Oldsmobile F85 330 CID
- 1965-1966 Oldsmobile F85 400 CID
- 1964-1967 Oldsmobile Cutlass 330 CID
- 1965-1967 Oldsmobile Cutlass 400 CID
- 1967-1967 Oldsmobile Cutlass Supreme 330 CID
- 1964-1967 Oldsmobile Vista Cruiser 330 CID
- 1964-1966 Pontiac GTO 389 CID
- 1967-1967 Pontiac GTO 400 CID
- 1964-1967 Pontiac Beaumont 283 CID
- 1964-1967 Pontiac Beaumont 327 CID
- 1965-1967 Pontiac Beaumont 396 CID
- 1964-1967 Pontiac LeMans 326 CID
- 1964-1967 Pontiac Tempest 326 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
4.6 ★★★★★
Based on 16 reviews
Sort
Product Reviews
★★★★★ 5
Perfect Lounge Pants
Size: 4X-Large, Color: Black Heather, Number of Items: 1
These pants are so soft and comfortable for wearing around the house. Light enough for wear during the summer and for layering in cooler temperatures. They stretch in all the right places for a very comfortable fit and are well made. Would definitely buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
★★★★★ 5
Soft and Comfortable Lounge Pants
Size: Large, Color: Black, Number of Items: 1
These sweatpants are soft, comfortable, and great for lounging around the house or running quick errands. The fleece lining adds warmth without feeling too heavy, and the elastic bottoms give them a nice fit. The pockets are a great addition and are deep enough to hold everyday essentials.
The fit was true to size, and they've held up well through multiple washes. A comfortable pair of sweatpants for everyday wear.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 4
Material quality getting worse.
Size: 3X-Large, Color: Navy, Number of Items: 1
Our household has been buying Fruit of the Loom sweatpants for at least 15 years. So I ordered these this year. Yes, they're soft, comfortable and fit right, and good price. But after only 3 wearings, the material began to pill. I checked my older pairs, which have never pilled. The oldest are a 50-50 blend, the ones bought 2 years ago are 45 cotton, 55 polyester. The new ones are 40 cotton, 60 polyester. So I guess that's the difference. I don't expect them to last as long. Sorry, FOTL, you could have gotten a 5 star rating from me if you hadn't skimped on the material.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
★★★★★ 5
Perfect Fit for My 370 lb son. Soft, Durable, No Shrinking, Incredibly Comfortable!
Size: 4X-Large, Color: Black Heather, Number of Items: 1
I can’t speak highly enough about these Fruit of the Loom Eversoft Fleece Elastic Bottom Sweatpants. I purchased them for my 370 lb family member, who wears a 4X, and these are truly the only pants I’ve ever seen him feel completely comfortable in. They look great too and have pockets! Shopping for someone of his size has always been a challenge, especially finding pants that don’t dig in, feel soft, and hold up over time. His weight pools mostly around his waist and ankles, making it even harder to find something that fits without being tight or restrictive in those areas. But these sweatpants? Absolute perfection.
The material is made from 60% cotton and 40% polyester fleece, which creates this super soft, cozy texture on the inside, while the outside has a smooth, durable finish. The Eversoft technology really delivers on comfort—no scratchy feeling, just a nice, breathable fabric that keeps him warm without overheating.
One of the biggest selling points for us is that they do not dig into the waist or ankles at all—which, again, is so important for someone whose weight is concentrated in those areas. The waistband is wide, stretchy, and soft with a functional drawstring, so it adjusts without pinching or feeling tight. The elastic at the ankles has enough give to keep the pants in place without constricting, even with larger ankles. That’s rare to find in extended sizes where elastic bands can often be too tight and uncomfortable.
We’ve washed these multiple times (always following the care instructions—cold water, gentle cycle, and tumble dry low), and they have not shrunk or lost their shape. The fleece stays soft, the seams hold up, and there’s no pilling or fading so far. Another bonus: no foul odor when they arrive (which I’ve experienced with other brands in the past). They come fresh and ready to wear right out of the bag.
I’ve already ordered more pairs because these are the only pants my family member wants to wear while working on stabilizing his thyroid condition and managing his weight. They give him comfort, dignity, and confidence, which is priceless.
If you have a larger family member, or you’re someone with similar sizing needs, do not hesitate to try these. They check every box: softness, fit, durability, easy care, and true comfort where it matters most.
Thank you, Fruit of the Loom, for making inclusive, thoughtful clothing that truly accommodates real bodies. These sweatpants have made a real difference in my family member’s daily comfort.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2025
★★★★★ 5
Good price
Size: 4X-Large, Color: Duffle Bag Green, Number of Items: 1
Perfect cut but had a half inch tear on the inseam. Instead of sending it back I just sewed it up myself
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026