Perty sick if you ever wanted more power you can use a aracer ECU and motor swap to a 212cc Daytona 4v 28hp 5speed electric and kick start engine it will be a direct replacement for the 125 Grom engine basically 3x more power and also can use fuel injection from the grom it one of the fastest pit bike engine for sale 😉💯👍🛠️✌️🍻🏍️
Google Dayton 4v 212 cc engine and if it going in a real grom not a clone. You will need the engine mount bracket or make one there u tube videos look up 190cc builds