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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
For Your Every Summer RSVP, with Code: SUMMER15
Description
GPR Exhaust System Kawasaki KX250X 2021-2023, Pentacross Inox, Full System Exhaust, Including Removable DB Killer/spark arrestorProduction Time: 20 25 DAYS Weight: 2 Lbs. 4. 41 Kg. Length: 13. 78 in. 350 mm. Complete RACING system for track use made in respect to FIM homologation limits, the kit consists of manifold with ULTRABOMB expansion and new PENTACROSS silencers line. Manifold and silencers are made of 304 stainless steel, average performance increase of 2cv, significant reduction in weight, developed thanks to the collaboration with the MXGP team GPR supplies a 304
Production Time: 20 - 25 DAYS
Weight: 2 Lbs. / 4.41 Kg.
Length: 13.78 in. / 350 mm.
Complete RACING system for track use made in respect to FIM homologation limits, the kit consists of manifold with ULTRABOMB expansion and new PENTACROSS silencers line. Manifold and silencers are made of 304 stainless steel, average performance increase of 2cv, significant reduction in weight, developed thanks to the collaboration with the MXGP team
GPR supplies a 304 stainless steel manifold. The package includes flanges, bushings, brackets. It mounts directly on the cylinders without any structural changes.
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.
RACING PRODUCT: This exhaust is supplied with a removable DB Killer. However, it is a RACING product and is not legal for road use.
This kit does not include a catalyst.
In some cases, 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.
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 for your road network.
Reference: PNT.MX.33.IO
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 1186 reviews
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Product Reviews
★★★★★ 5
Great chair keeps you feeling cool!
I love the mesh areas - it keeps you feeling cool. I love the high back and neck area (it’s adjustable) the seat tilts back and allows you to relax (for me it’s a good back stretch ) I recommend this chair for any office use!
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Reviewed in the United States on June 3, 2026
★★★★★ 1
Bad
Chair is super uncomfortable, quality is not worth this price there is cheaper for better. Already breaking on me in just a few months.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Sturdy and Comfortable
I’m really impressed with this ergonomic office chair. Assembly was incredibly easy I had it put together much faster than I expected, and everything fit together perfectly without any frustration. The teal green color is beautiful and one of my absolute favorites; it adds such a nice pop to my workspace.
As a heavier person, I’m always cautious about weight capacity, but this chair feels genuinely solid and supportive. No wobbling, no sinking just sturdy, reliable construction. The seat cushion is comfortable for long hours at the computer, and the back support has made a noticeable difference in reducing my back pain.
I also appreciate how easy it is to clean. A quick wipe keeps it looking fresh, and the material doesn’t trap dust or pet hair. The wheels glide smoothly, making it easy to roll and turn without any effort.
For the price, the quality and value are fantastic. This chair has definitely made my workdays more comfortable. I highly recommend it especially for anyone who’s heavier and hesitant about sturdiness.
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Reviewed in the United States on November 30, 2025
★★★★★ 5
Great chair — comfortable, sturdy, and surprisingly easy to assemble
The first thing that impressed me was how steady and solid it feels. It’s not wobbly or flimsy at all, and the base and wheels roll smoothly without feeling cheap. Once assembled, it feels like a chair that will last.
Assembly was also easier than expected. The instructions were straightforward, and all the parts lined up well. My 12-year-old son helped assemble it and was able to do most of it himself with some effort.
Comfort-wise, it’s excellent for everyday use. The mesh back is breathable, the seat feels supportive, and the tilt adjustment (90–125°) is a nice bonus when I want to lean back and relax. The 3D armrests are also a great touch and help with positioning for desk work.
Overall Nice chair
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Reviewed in the United States on December 21, 2025
★★★★★ 5
Sturdy, comfortable and solid chair for focused-workers
Color: Onyx Black
I LOVE THIS CHAIR!
I've had a manager's style leather chair for the past four years from one of the office supplies big box stores and the armrests began to wear off, so the need for a suitable replacement was needed. Immediately, I knew how badly my posture was in the former chair and the ergonomics of this chair are 100% comfortable. The lumbar support is a little difficult to adjust correctly and that would be my only item for the makers to improve in future iterations. Overall, I am impressed with the quality, ease of assembly and downright comfort of this chair. I enjoy the settings especially the one to lock-in the recline degree of the back halfway and the leg rest is durable and strong. This change was for the better and I'm way more energized to get through my digital workflows for hours at a time without any fatigue. The item is cheaper than when I bought it and that's an absolute steal and bargain with much value hopefully for years to enjoy.
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Reviewed in the United States on June 4, 2026
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