THIS IS A STAGEII 92CC BIG BORE KIT WITH HIGH PERFORMANCE CAM AND SPRINGS MADE IN JAPAN. FITS HONDA XL80-XR80 & CRF80. YOU WILL NEED TO BORE YOUR CYLINDER. 10.5;1 Compression Ratio. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle & Scooter Parts & Accessories\Engines & Engine Parts\Other Engine Parts".The seller is "vintageworks140" and is located in this country: US. This item can be shipped worldwide.