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Description
GPR Exhaust System Honda CB650F 2017-2018, M3 Poppy , Full System Exhaust, Including Removable DB KillerProduction Time: 10 15 DAYS Weight: 1. 2 Lbs. 2. 65 Kg. Length: 11. 81 in. 300 mm. GPR's M3 Poppy Impact Zero was developed after the victories in the Moto3 World Championship. It has a removable racing grill and is road legal. It has been developed with a production process that produces zero impact to the environment. It has a stainless steel body, CNC machined bottoms with a carbon look finish. Its round shape has a diameter of 3. 9 inches (100MM).
Production Time: 10 - 15 DAYS
Weight: 1.2 Lbs. / 2.65 Kg.
Length: 11.81 in. / 300 mm.
GPR's M3 Poppy Impact Zero was developed after the victories in the Moto3 World Championship. It has a removable racing grill and is road-legal. It has been developed with a production process that produces zero impact to the environment. It has a stainless steel body, CNC-machined bottoms with a carbon look finish. Its round shape has a diameter of 3.9 inches (100MM).
FEATURES
• SOUND: Upgraded sound from stock exhaust.
• PERFORMANCE: Upgraded performance from stock exhaust
• QUALITY: Italian made with high-grade welding
• WEIGHT: Lighter than stock exhaust
Assembly: This kit includes the specific manifold stainless steel made, with relative flanges, bushings, brackets and any screws. This allows for installation without any structural changes. The installation also involves the elimination of the catalyst and for this reason it may not be suitable for official vehicle maintenance.
ATTENTION: this article is homologated / approved for noise only, it is sold without catalyst but including the removable db killer, the customer must check in advance whether the presence of the catalyst is necessary in his country to comply with the regulations for circulation on the road network and to arry out the annual inspection. Tampering with the DB Killer and catalyst welding or antitampering screws or fastener is illegal for road use within the EU directives. It is permitted only for RACING use in the circuits. The use of the open version (without the DB Killer) on roads may does not comply with regulations governing circulation on the public road network.
This is an original GPR product, developed after GPR's experience in the World Championship. It offers an innovative design, improved performance, weight savings and a full-bodied sound.
GPR products are plug-and-play. However, GPR recommends the installation from a licensed mechanic as GPR will not accept any claims from a do-it-yourself installation. The use of racing items may require the remapping of the ECU, especially when there are additional modifications, such as the installation of a sports filter.
Made in Italy with a 2-year international warranty.
The included DB Killers are removable for racing use only. This exhaust may not road-legal and may does not meet local government regulations if DB Killers are removed.
If you buy online from a seller that is NOT GPR, we recommend you buy from a seller in YOUR COUNTRY to ensure that the item arrives with the correct approvals that must also comply with local legislation. Make sure before purchasing that the seller is trustworthy and offers the items that comply your road network.
The specific homologation certificate is provided, as well as the assembly instructions, each silencer bears the homologation code. In the event of problems encountered during the installation, it is mandatory to stop and suspend the activity, to immediately request information and / or advice from the customer care via email [email protected]
Reference: E4.CO.H.249.DBHOM.M3.PP
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 8 reviews
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Product Reviews
★★★★★ 5
Must have
These things a freaking AWESOME!
If you're doing a big sound deadner job, you need thees! The 3 different sizes are perfect for the different shapes in the floor pans. Well built, good quality and they have a nice weight to them. Just buy them and thank me later. For $15.00 you can't go wrong.
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Reviewed in the United States on March 12, 2026
★★★★★ 5
Bringing a 1976 MG Midget to the modern world!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
I've been restoring a 1976 MG Midget barn find. I bought some Sinless liner to help make the car rattle less and feel more solid.
This product is easy to cut, easy to install, and extremely sticky. I used it to line the trunk, the interior, and even some under the hood of the old MG. The adhesive stands up to the brutal temperature of the engine bay, and when (by accident) some fuel spilled onto the foam, it didn't fall apart or turn to mush.
Thanks to Siless, the MG now feels like a modern car. The floor pans feel much more solid, the doors make a heftier thud when you close them, and the trunk no longer sounds like a percussion instrument when you touch it.
If you know what you're doing, this product will transform the feel of a car. I found that 36 sq ft was enough for my MG Midget, but for a bigger car I would want more. The pattern on the back helped me to cut perfectly measured squares and rectangles. The foam itself doesn't have a strong odor, it works super well, and has held up to several months of changing temperatures (in the Midwest US.)
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Reviewed in the United States on November 11, 2025
★★★★★ 5
Excellent Car Sound Deadening and Heat Insulation Solution
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
If you're looking for a high-quality car sound deadening and heat insulation material, then the Siless Liner 157 (4 mm) mil 36 sqft is definitely worth considering. This product is designed to offer superior noise reduction and heat insulation for your car, making your driving experience more comfortable and enjoyable.
The closed-cell foam material used in this product is of premium quality, and it effectively blocks out external noise and vibrations. This means you can enjoy a quieter and more peaceful ride, even on noisy roads. In addition, the Siless Liner 157 also provides excellent heat insulation, which can help keep your car cooler in hot weather.
One of the best things about this product is that it's very easy to install. You don't need any special tools or equipment, and the material can be easily cut to fit any shape or size. It's also very lightweight and flexible, which makes it easy to work with.
Overall, the Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat is an excellent choice for anyone looking to improve the comfort and performance of their car. It's a high-quality product that delivers on its promises, and it's definitely worth the investment.
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Reviewed in the United States on March 12, 2023
★★★★★ 4
Heavy-Duty That Works!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
This extreme sound deadening mat performs well for reducing road noise and vibration. It feels dense and adheres securely when properly applied. Once installed, it noticeably improves interior quietness.
Overall, it’s a strong choice for more serious sound insulation projects.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Good product, quite sticky I must say.
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Worked for my van insulation
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Reviewed in the United States on June 1, 2026