GPR Pentacross Inox Exhaust – Gas Gas MC 450F 2024/2025 2024/2025

GPR ExtraCee Pentacross Inox – Gas Gas MC 450F 2024/2025 2024–2025

The GPR ExtraCee Pentacross Inox is a complete full system exhaust engineered specifically for the Gas Gas MC 450F 2024/2025 2024–2025. Designed and handcrafted in Italy by GPR, this exhaust replaces the entire stock exhaust system — from manifold to silencer — delivering a significant improvement in engine performance, weight reduction, and an unmistakable exhaust note. Whether you ride on the open road or push your bike on the track, the GPR Pentacross Inox transforms the riding experience of your MC 450F 2024/2025.

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

Performance / Racing Use: This exhaust is designed for performance and racing applications. Please verify local road regulations before fitting to a street-registered motorcycle.

Installation & Warranty Information

For installation, no structural modifications to the motorcycle are required for use of the product in an approved version. It is recommended to read the instructions in the package or the tutorials visible on www.gpr.it and on youtube. For on-line purchases it is necessary to activate the warranty by sending the special coupon stamped by the installation workshop via email to certificato@gpr.it, for purchases at physical stores the shop stamp is sufficient. The exhaust has a removable db killer (noise restrictor) for racing use, remove the db killer is not ONLY illegal, but the customer assumes the responsibility to use the motorbike as on the circuits only, without bags, without flash light and 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 devolution to GPR factory or nearest official distributor at client expenses. GPR cannot provide a new silencer instead of the one to repair, the client has to accept to remount the original exhaust or wait the standard time for the reparation.

Key Features

• GPR supplies a 304 stainless steel manifold. The package includes flanges, bushings, brackets. It mounts directly on the cylinders without any structural changes.
• 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.

Technical Specifications

• Compatible motorcycle: Gas Gas MC 450F 2024/2025 2024–2025
• Exhaust type: Racing full system exhaust, including removable db killer/spark arrestor
• Silencer shape: Pentagonal
• Body finish: Brushed Stainless steel
• End cap finish: Brushed Stainless steel
• Weight: 1.9 kg / 4.19 lbs
• Homologated: No – performance/racing use
• Eco certification: ISO 14021 – Zero Impact Production Process
• Origin: Made in Italy
• Warranty: 2 Years International

DB Killer Information

Tampering with the dbkiller and the related welds/safety screws violates the conformity of the product and makes it illegal for road use.

About GPR ExtraCee

GPR Italia is one of Europe's most respected motorcycle exhaust manufacturers, with decades of experience in both road and competition exhaust systems. The ExtraCee line represents GPR's commitment to delivering World Championship-derived engineering to everyday riders. Every GPR exhaust is handcrafted in Italy using premium materials, precision TIG welding, and subjected to rigorous quality control — backed by a 2-year international warranty.

Brand: GPR Italy  |  Made in Italy  |  Warranty: 2 Years International