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Description
GPR Exhaust System Ktm Adventure 390 2021-2023, M3 Inox , Slip-on Exhaust Including Removable DB Killer and Link PipeProduction Time: 7 10 DAYS Weight: 1. 26 Lbs. 2. 78 Kg. Length: 9. 84 in. 250 mm. GPR developed the M3 Inox after the victories in the Moto3 World Championship. It has a removable racing grill and CNC machined bottoms. It has a hand brushed stainless steel body, and a round shape with a diameter of 3. 9 inches (100MM). FEATURES SOUND: Upgraded sound from stock exhaust. PERFORMANCE: Upgraded performance from stock exhaust QUALITY: Italian made with
Production Time: 7 - 10 DAYS
Weight: 1.26 Lbs. / 2.78 Kg.
Length: 9.84 in. / 250 mm.
GPR developed the M3 Inox after the victories in the Moto3 World Championship. It has a removable racing grill and CNC-machined bottoms. It has a hand-brushed stainless steel body, and a round shape with 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
This kit includes the specific lnik pipe or half-manifold with specific appropriate brackets and accessories. This allows for installation without any structural modifications.
To install, no structural modifications are required. GPR recommends reading the included instructions or tutorial on http://www.gpr.it or the GPR channel on Youtube.
For on-line purchases, activate the warranty by sending the installation receipt from the mechanic / shop via email to [email protected], or sending the sales receipt from the physical or online store.
The exhaust has a removable db killer (noise restrictor) for racing use. Removing the DB Killer is ILLEGAL and the customer assumes the responsibility if they use the motorbike as on the circuits only, without bags, without flash lights, number plate holder or other parts that would conflict with the different angle of the gas following the transformation into the racing version. Abuse of this situation on the road will result in the loss of the product warranty and any refund request will be rejected.
The warranty is two years from the purchase, with right of reparation with a return to the GPR factory, or the nearest official distributor at the customer's expense.
GPR will not provide a new silencer, but will repair the original silencer. The customer must accept to remount the original exhaust or wait the standard time for the repair.
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.
Made in Italy with a 2-year international warranty.
Tampering with the DB Killer 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 does not comply with regulations governing circulation on the public road network.
This kit is homologated for noise only. Please check whether a catalyst is necessary within your country to be road-legal and to pass any local inspections.
GPR Products are plug-and-play. However, we do recommend a professional installation.
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.
Each package includes the homologation certificate, assembly instructions, and a homologation code on each silencer.
In case of a problem during installation, please stop the installation process and immediately contact customer care via email at [email protected]
Reference: E5.KT.99.M3.INOX
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
4.1 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 4
Very solid option for comfort but the pattern of the shirt I received was off-putting
Size: Small, Color: Grey White Stripe
The shirt itself is great, sizing is spot on with an athletic tapered fit which I always prefer in a polo. The material is classic maelreg cotton feeling without the heaviness and water holding of typical cotton shirts. You can run in these polos, workout, go out to lunch or dinner, or simply sleep in these they are so comfortable. It's the patterns offered that made me return this and another I tried out. Colors are spot on with descriptions but the patters are small enough to play tricks on eyes, I received complaints from both my wife and daughter (separately) about the pattern hurting their eyes hence the 4 star instead of 5. Others may love the patter but know that it isn't as universally pleasing as more other shirts offered by this brand
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Good
Size: Medium, Color: Navy Stripe
Good, soft material
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Comfortable, and good quality
Size: X-Large, Color: Cobalt Stripe
Nice quality for the $
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Looks decent, doesn’t cook me in summer
Size: Medium, Color: Grey White Stripe
Bought this mainly as another golf shirt and wasn’t expecting much. Material is lightweight and comfortable enough during warmer days. Fit was pretty close to expected sizing.
Sometimes inexpensive golf shirts end up feeling stiff or cheap after washing. This one has held up fine so far. Good everyday option.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Most Comfortable Hoodie I’ve Ever Worn…
Color: White Light Blue Grid, Size: Medium, Color: White Light Blue Grid, Size: Medium
Arguably, this is one of the most comfortable hoodies I’ve ever worn—and that’s saying something. The fit, feel, and overall look just come together in a way that makes this an easy go-to.
I’ve become a big fan of M MAELREG, and this hoodie continues that trend. Their focus on clean, sharp styling really shows here. It has a modern, athletic look without trying too hard, and it works just as well for casual wear as it does for something a bit more put together. My wife immediately noticed it—and that’s always a good sign.
The standout feature is the fabric. It’s lightweight but not flimsy, with just the right amount of structure. The stretch is excellent, and it moves naturally without feeling restrictive. It also does a great job managing heat, which is a big deal here in Arizona. Whether I’m out running errands, heading to a showing, or just wearing it around the house, it stays comfortable and breathable.
Another thing I appreciate is how versatile it is. This isn’t just a “gym hoodie” or something you only wear lounging—it genuinely fits in almost anywhere. It has that polished, performance look that makes it easy to dress up or down depending on the situation.
At roughly $40, this feels like a strong value. You’re getting a well-designed, comfortable piece that looks good and performs even better.
Final thoughts….
✔️ Extremely comfortable with a lightweight, performance feel.
✔️ Clean, modern design that looks sharp in multiple settings.
✔️ Breathable and well-suited for warmer climates like Arizona.
✔️ Great stretch and mobility without feeling too thin.
✔️ Strong value for the price point.
⭐️1 star — I don't endorse this at all, poor quality.
⭐️⭐️ 2 stars — I don't endorse it: has multiple faults, or significantly overpriced.
⭐️⭐️⭐️ 3 stars — It's passable: it has some faults, some compromises, but the quality is acceptable for what it is.
⭐️⭐️⭐️⭐️ 4 stars — Product quite acceptable, and it does what it promises.
⭐️⭐️⭐️⭐️⭐️ 5 stars — Product that I totally endorse. Blown away. Drop everything and buy it!
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Reviewed in the United States on April 23, 2026