KITACO LIGHT Bore-Up Kit, 85cc Aluminum Cast Iron Sleeve Cylinder, for Honda Monkey, Gorilla, Dax (12V), Jazz, Magna 50, Chari (not compatible with

Compatible models: Monkey/Gorilla: Z50J-1600008~1805927 / Z50J-2000001~ / AB27-1000001~1899999 | Monkey Baja: Z50J-1700001~ | Dax 50 (12V): AB26 | Jazz: AC09 | Magna 50: AC13 | Motorola: AD05 | Chari 50 (not for automatic transmission): CF50-3000031~ | Monkey R/RT: AB22 | CD50/Benly 50S/Benly CL50: CD50-1500001~ | Super Cub 50/Press Cub: C50-8000001~9501323 C50-9600001~0095210 / C50-0200001~ / AA01-1000001~1699999 | Little Cub: C50-4300001~ / AA01-1000001~3999999 | JOLCUB: AF53 | Solo: AC17 | XR50R/CRF50F: AE03 Aluminum Cast Iron Sleeve Cylinder Displacement: 85cc | Bore Diameter: φ51 | Stroke: 41.4mm (Stock) Piston: Cast This is a low-cost bore-up kit that allows you to use the stock cylinder head as is. It increases torque and power in the low- to mid-range, allowing you to experience what a bore-up is all about.