The fire breathing NCY monster big bore kit! If you are looking for the largest kit on the market, this is it! It's a true 90cc. Don't let the $30 Ebay and Amazon 100cc kits fool you.
This kit will convert your 49cc Chinese scooter, Kymco Agility or anything with the QMB139 engine in it to 90cc's. The 90cc is as large as you can go with this engine. This kit is great quality (made in Taiwan) you won't find a nicer big bore kit. Remember you pay for what you get! The stock cylinder head will not fit. The cylinder head supplied in this kit is complete with larger valves and bigger ports making it a performance head. The ports are as large as a 150cc scooter.
This kit includes:
Piston
Piston Rings (not installed like picture shows)
Cylinder
Performance Cylinder Head (Complete with big valves)
Complete rocker box assembly
ADD THIS CARBURETOR TO REALLY BRING IT TO LIFE! CLICK HERE
This 90cc big bore kit will fit the models below
- Any machine with a QMB139 / 139QMB / GY6 50 (4-stoke) engines.
