SKU: 13159869441

GTHaus Primary Down Pipe Section with reservoir and heat shield protection for 2020 BMW M8 Gran Coupe(BM4813002)

$1538.19 $1709.10
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 18 - Sep 23

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Description

GTHaus Primary Down Pipe Section with reservoir and heat shield protection for 2020 BMW M8 Gran Coupe(BM4813002)If you are looking to get the most power and performance out of your vehicle, than you need our downpipes to complete your exhaust build. Our downpipes will elminate either the primary or secondary catalytic converters which will optimize your exhaust flow and give your car maxium power. All of our downpipes are made from either Stainless Steel or Titanium Allow. Our Stainless Steel models feature T304 T316 high grade polished stainless steel from

If you are looking to get the most power and performance out of your vehicle, than you need our downpipes to complete your exhaust build. Our downpipes will elminate either the primary or secondary catalytic converters which will optimize your exhaust flow and give your car maxium power.

All of our downpipes are made from either Stainless Steel or Titanium Allow. Our Stainless Steel models feature T304/T316 high grade polished stainless steel from POSCO. It is durable, corrosion resistant and perfect for the everyday driver. Our titanium allow systems feature 100% premium titanium alloy. They are extremely lightweight and ,highly recommended for track andamp; racing applications.

Meisterschaft, MUSA, and American Roar Racing exhaust systems provide the most unique exhaust notes in the industry, period. Our exhaust systems are custom tailored for each specific vehicle without the use of any universal parts. Countless hours of RandD go into each vehicle to achieve the perfect pitch unique to each vehicle . The result is an exhaust system that is as fine tuned as a fine musical instrument, delivering an exotic, unique, and aggressive sound.

Features:

  • Unique style and sound that out performs any competition on the market
  • Uses only the highest quality stainless steel or titanium alloy
  • Minimum 35% weight savings on stainless steel systems, 75% on titanium
  • Guaranteed maximum power gains on all exhaust components.

Ordering Information
Regular "in stock" production is planned and scheduled 6 months in advance with estimated completion and ship dates for each batch. We always do our best to produce and restock popular items on a regular basis. However. due to high demand. and a heavily loaded production schedule. there are times where production can be delayed.

Along with any "Custom" ordered items, certain items in our price guide are marked "Special Order''. These items are typically for limited-production vehicles or past model year vehicles and are not ordered on a frequent basis thus these items are built to order only. Production time will vary and may take up to 10 weeks. Please speak with JM Auto Racing Sales and customer support for more accurate time of delivery and pricing.

RUSH ORDER* PROGRAM (4 Week Fast Track Delivery
Rush orders can be placed for build to order units or regular stock units in order to be "RUSH" production within 4 weeks. In order to register a product in this FAST TRACK production batch, there is a$1000 flat fee (per unit) for such urgent rush orders.

 

Specifications:

  • Part Type: Downpipes
  • Fitment Spec: Vehicle Specific
    • Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. 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
    SKU: 13159869441

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    4.4 ★★★★★
    Based on 24 reviews
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    Verified Purchase
    ClairY
    San Leandro, US
    ★★★★★ 5
    Finally!
    Size: X-Large, Color: All Black D (5-pack)
    Finally, comfortable underwear that don’t end up giving me a wedgie. I have a round booty and most cuts of underwear end up shifting as I walk and sit. The hem of the underwear comes right under my cheeks and the lightweight material ensures there’s no panty line and no shifting to where I don’t want them! I’m definitely purchasing more.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 17, 2026
    A
    Verified Purchase
    Amazon Customer
    Carnegie, US
    ★★★★★ 3
    Ehh
    Size: Medium, Color: Multicoloured E-(5-pack)
    Very thin, still comfy but very thin material. Super soft though. I've worn and washed and they have held up but I won't be repurchasing bc these are so thin
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 14, 2026
    G
    Verified Purchase
    Grma4m&m
    West Palm Beach, US
    ★★★★★ 5
    They’re fantastic!!!!
    Size: X-Large, Color: Multicoloured E-(5-pack)
    My clothing size is 16/18 and XL. Even though Amazon suggested a size XXL, I ordered my normal XL and they fit perfectly. The fabric for this style is 92% bamboo viscose and is amazingly soft and almost silky feeling. I had ordered a different boy short in this brand but they were 80% bamboo viscose and the fabric was significantly heavier. I returned those and ordered these.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 25, 2026
    B
    Verified Purchase
    babylon101
    West Palm Beach, US
    ★★★★★ 5
    Boy have I bought A Lot of Underwear
    Size: Medium, Color: Black,navy,melange,london Blue,burgandy
    These are my favorite boyshorts so far. The little stripes kill me, they're so cute. I am now an expert on boyshorts. You should know, I always buy the color packs with boyshorts with a make-up that look like static on the tv. Not sure how else to describe that but they tend to be the same across the board and I think they're super cute, personally. The solid colors may be a different story. SO-Here's what I've learned: They're all basically the same, minus the material and how you like them to fit. You want to look at what the exact material content is. Do you like super soft, almost gauzy and you're not concerned with possibly snagging them? Then you'll want to find boyshorts with a high percentage of polyamide. These are not them. These are about 50/50 polyamide and polyester, which is firmer and has less stretch. Not gonna snag them in regualr situations. Still lots of stretch, though. Just more support and more excercisey material feel. But, there is enough polyamide in them to still feel soft. I prefer less plush and more support. There is a dash of spandex in there and that's good to accommodate many bodies and to hold their shape over time. I know some gals are looking for a softer, stretchier, plushy boyshort. They're easy to find. Look at the material listed. Okay, about sizing: These are stretchy. Not SUPER stretchy, like the gauzier underwear, but stretchy, and you'll fit in most of the sizes. The fit will just be different, obviously. I'm a large in regular pants typically. Size 12. Ten in a good month. I'm 48, 5'5 and 165 pounds. I've got a booty, but not super-duper bangin. Just big. Anyways, I've gotten my "true" size (L), sized up (XL) and sized down (M). Sizing up (XL) is too "poochy" feeling and just mildy wads up around where my legs meet my bits. Comfortable, and stay on but saggy feeling to me. The true-to-size, size large, are less "waddy" and fit fine! Loose enough to almost forget they're on. I've sized down to medium, and that's where my preference is. They fit like I have work out shorts on, just very short ones. More support but don't look ridiculous. I don't look like a sausage in them. Size small would be that on me-the sausage shorts. I mean, I'm wearing these around the house in the summer so I don't have to crank my A/C., and for bed. They aren't gonna be seen my many. Either way these are going to roll up (super skinny gals without thigh gap...do boyshorts roll up on you too? Always wondered that) but the smaller size on me seems to roll less, and that roll doesn't bother me. A roll is different from a "wad". Actually I wouldn't even call it a roll, I'd call it a "fold over". Ha ha I hope this helps and you understand my lingo. FYI I have found personally that most of these brands are the same exact thing from China, packaged and branded differently. The material is the big factor. But these are the only ones I've found with little pinstripes. CUUUTE. Good luck out there!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 17, 2025
    A
    Verified Purchase
    AutumnRose
    Boise, US
    ★★★★★ 5
    Great product
    Size: Medium, Color: Black,navy,melange,london Blue,burgandy
    I adore these! They're so comfy. When they first arrived they felt a little snug in the waist and leg holes, but I gently stretched them out before putting on and have had no problems since, even after washing/drying, i just put on delicates cycles. The slight snugness normally wouldn't bother me at all and most of my other undies are tighter, but I had surgery for endometriosis back several months ago so I need/needed something comfortable. I'm used to wearing hip huggers or bikini briefs. I was concerned that boyshorts would ride up or that the legs would roll-which they do roll up slightly, but it's easy enough to adjust when putting on clothing and then I have no issues!-Once I tried these, they've become my favorite underwear. They're very soft and "seamless" and I like the fact they have no elastic. I have pain down my inner thighs that makes seams or elastic leg holes uncomfortable, but these undies are long enough and soft enough to provide coverage/protection in that area when wearing pants or leggings with inner seams, and makes it so much better to deal with. I just ordered another package and I'm excited to have more pairs to replace my old undies with! Really happy with this purchase.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 11, 2022

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