NCY Engine Case Boring Tool - GY6 125/150cc CVT springs with chamfered lead-in and lead-out

with chamfered lead-in and lead-out ends to prevent shudder and squealing

Winterizing your scooter properly can mean the difference between riding like a bandit on those first beautiful days of spring

this kit is compatible with your vehicle

Mechanic's Note:  To maintain the 94 mph speed rating and ensure even tread wear

High quality replacement part for Chinese engines

NCY Engine Case Boring Tool - GY6 125/150cc CVT springs with chamfered lead-in and lead-outEngine Builder Precision: NCY GY6 Case Boring Tool Push the limits of your GY6 engine with the NCY Case Boring Tool. When upgrading to extreme big bore kits (such as 61mm or 63mm cylinders), the stock engine case diameter is often too small to accept the larger cylinder skirt. This professional grade tool allows you to precisely machine the engine case to the perfect clearance, ensuring a seamless fit for high displacement performance upgrades.