Malossi MHR carburettor kit contains: Dellorto 19mm PHGB carb and all necessary mounting parts. Originally for regulated scooter trophy series with enough power for top level racing. Lower fuel consumption than with PWK and TM carburettors. Best tuneable carb on the market and the most used carburettor in the IDSM Zip category. ,Jetting: MJ: 70, PJ: 48, without air filter.