Displacement: 88cc Compatible models: Monkey/Gorilla/Monkey Baja/JAZZ Accessories: NEW hyper cylinder head, high camshaft, aluminum cylinder, lightweight piston, piston ring, gaskets, cam chain sprocket, moped type 2 sticker, etc. Big fin version Improved heat dissipation Adopts a lightweight Cosworth type cast piston. Increased rigidity near the pin boss

Bore up kit with cylinder head that is reasonably priced and has excellent performance and durability. Optimized the IN/EX port shape and increased the compression ratio from 10.7:1 to 11.0:1, improving performance across the entire range (compared to our company). Increases power by 3 to 4 times compared to normal. Laser marking the DAYTONA logo on the cylinder head. By lowering the height of the manifold mounting part, YD24/28 carburetor can be installed. [Compatible models] Monkey/Gorilla 12V (Frame No.: Z50J-2000001, AB27-1000001~) Monkey/Gorilla 3.1PS 6V (Frame No.: Z50J-1600008~1805927) Monkey Baja (Frame No.: Z50J-1700001~) JAZZ (Frame No.: AC09-1000030 ~) * Our specified maximum rotation speed: 12,000 rpm (10,000 rpm for the primary clutch) * Vibration and engine noise will increase due to the increased bore. *Please install an oil cooler and oil temperature gauge to control the oil temperature. Continuous driving at high temperatures (over 100°C) may damage the engine. *Requires separate parts to be installed at the same time (reinforced clutch, reinforced oil pump, reinforced cam chain). If you use genuine parts, the engine may not be able to withstand the increased power and may be damaged. *To achieve the specified performance, the carburetor and muffler must be replaced. *Please use high octane gasoline due to high compression.


Manufacturer: Daytona Brand: Daytona Model name: Bore Up Kit Hyper Head Series cm; 3.24 kg
Product model number: ‎20000
Certification: ‎1 year from the date of delivery. A statement of delivery is required. We guarantee this product only for use within Japan.
Product weight: ‎3.24 Kilograms