Malossi 50cc sports cylinder kit with altered timing and optimized outlet port for nearly double the power of the original. Ideal if you do not want to go up a capacity category to 70cc. May no longer be road legal, this depends on your countries regulations. Supplied with all the necessary small parts, gasket set, instructions etc. incl. cylinder head. Supplied with 10mm gudgeon pins. Main jet must be adapted. A larger carb is not necessary, but a 17.5 carb is recommended.