Pay in 4 interest-free payments of $47.00 Learn more
Ships within 48 hours · Estimated delivery Sep 6 - Sep 11
with chamfered lead-in and lead-out ends to prevent shudder and squealing
High quality replacement part for Chinese engines
They WILL fit on vintage Vespa Sprint models
Sleek Black Finish: Clean design that complements the Ruckus aesthetic
Plug-and-Play Wiring: Features the standard GY6 wiring harness (3-pin female plug + 2 individual female bullet connectors) for a straightforward installation
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.
