Scooter GY6 150cc High Performance Taida 61mm Big Bore Kit (171cc)

  
61mm TAIDA CYLINDER cast piston. HEAD GASKET, AND 2 BASE GASKETS. NO BORING REQUIRED ON MOST ENGINES. IT IS YOUR RESPONSIBLITY TO ENSURE THIS KIT WILL FIT. NOT FOR GOKARTS OR ATV'S REGARDLESS IF THEY HAVE A GY6 ENGINE. WILL NOT FIT ANY KYMCOS. FOR STOCK GY6 BLOCK WITH 54mm SPACING ONLY. OUTER CYLINDER DIAMETER 62.7mm. YOU WILL NEED TO RE-JET YOUR OLD CARBURETOR. WE SUGGEST GETTING A LARGER 26-28mm or 30mm CVK CARBURETOR. WITH ACCELERATOR PUMP AND RE-JET TO SUIT. INSTALLATION BY PROFESSIONAL IS HIGHLY RECOMMENDED. DO NOT USE STROKER CRANKSHAFTS WITH THESE KITS PER TAIDA.