Exhaust system Moto Guzzi Serie Grossa Mass Under-Box

Mass complete exhaust system: designed with specific shape and size for each motorcycle model. Each exhaust system is dyno tested on the motorcycle model for which it is made: increased power and torque, improved acceleration, and reduced weight and fuel consumption. Installation of this exhaust system does not require remapping the original ECU or even the use of additional ECU such as Dynojet or the Rapid Bike. The special variable taper shape of the pipes used in the construction of the Mass exhaust system grows from the heads and contains within it a soundproofing system composed of perforated rods wrapped with sound-absorbing material: handcrafted in stainless steel with special attention to the quality of materials and details in the welds to ensure maximum reliability and durability! Quick and easy assembly without modification: complete kit with all components for assembly and Homologation certificate for road circulation.

Mass exhaust system features:

• model: Under-Box
• material: stainless steel headers and mufflers
• finish of your choice
• improvements: horsepower +5%, torque +5%
• removable db-killer
• European Homologation

NOTE: Installation of this exhaust system does not require remapping the ECU.