Naraku GY6 58.5mm Big Bore Kit disc rotor Pulley's patented sliding geometry allows

Pulley's patented sliding geometry allows your variator to open further

Vehicle Type Fitment Position Honda Ruckus (NPS50) Stock Front Fitment Yamaha Zuma 50 (1997-2011) Stock Front Fitment Genuine Roughhouse 50 Stock Front Fitment (Pre-2018 models) Custom GY6 Builds Common "Fat Tire" front upgrade for 10" rims Technical Specifications

* Piaggio Liberty 50 2-stroke 2007-2008

Malaguti Technical Specifications

Naraku GY6 58.5mm Big Bore Kit disc rotor Pulley's patented sliding geometry allowsNaraku 58. 5mm Big Bore Kit for 125cc and 150cc GY6 4 stroke engines and engine based vehicles. Easy to install! Just bolt on with no crankcase modifications needed. Bore: 58. 5mm Outer Sleeve Diameter: 60. 3mm Displacement Increase to 155cc Overall Height (cylinder): 91. 5mm Stud Spacing: 76. 5mm GY6 QMI QMJ 152 157, Various unlisted makes models This product is not intended for use on public roads or land.