Air intake and exhaust valves

the mirror can also be mounted directly on the handlebar using the supplied aluminum adapter rings

Subtle perforations placed in the areas most exposed to overheating ensure sufficient air circulation and maintain the right temperature

Then this is a really good choice

Low weight (1000 g ± 50 g) – For a light and agile riding experience

PBR Standard C45 Steel Rear Sprocket 4350 - 525 4350 42 C45 vespa-vespa-px-125-1997-esi2436841 Air intake and exhaust valvesRace Experience Thanks to Many Years of Competition Experience, PBR Developted A Wide Range of High Quality Sprocks in Collaboration with Top Teams. High Quality Steel Alloy 18NCD5high Wear Resistance Reduces High Precision Manufacturing Chain Pitch: 525. 0 Color: Black Materials: Steel Rear Tear: 42. 0 Rear Type: 4350 REAR Version: Standard