GY6 80cc 50mm Kit includes Racing Head with Racing Valves only at Scootertronics

You get everything you need to upgrade your scooter to 80cc including cam shaft jet and air filter, the head has been updated with racing valves for even better performance

No one else offers what we do or has done it as many times as we have since 2003 the cost more its well worth it if it takes a day longer to get its even more worth it plus you can call us we work everyday unlike ebay who do not have phone numbers.

80cc Cam Shaft plus as always Scootertronics has updated this kit again with all new 50mm Racing Head with Racing Valves for a much bigger bang for your buck.

New Rocker Arm Assemblys in stock if needed 49.99

Don"t get stuck with small 47mm kit when you can have the best quality and power with 50mm NCY. These are quality kits not from China with a brand name, alot of companies advertise 80cc kits which are really 70cc kits at 47mm from china that fail quickly.

Scootertronics offers NCY Upgrade Parts.

Kit Includes
• 50mm Cylinder
• Piston, Rings
• 50mm Racing Head Head (Bored Out)
• Racing Valves Installed
• Gaskets Head and Base
• Air Filter
• 95 Jet

This kit works well with new air filter and jet which we include also for fine tunning plus we suggest electrical upgrade also for better spark and easier starting and roller weights.

DR Pulley 6gram weights work well for all around performance with this kit.

GY6 50 scooters. Kymco, Schwinn, QLink, Diamo, Avanti, Geely, Tank, Verucci, Qingqi, Roketa, Meitian and most scooters with GY6 50 139QMB four stroke engine made in Asia and China.

Vento and Pep Boys Scooter Owners, these kits will not fit these scooters. These two brands are made in same factory and use parts that do not match up to ours.

We are now offering a kit made special for Vento, Tomos, SYM plus Pep Boys Baja series scooters. Ask for this kit in check out if you one of these scooters.

Also do not forget your clutch roller weights and belt to use this new found power for better take off and no slip with Kevlar belt. Good size for roller weights for botttom end and not losing top end is 5 - 6 gram weights depending on riders weight lower for heavier 6 gram all around size then 5.5 for extra slam.



Because the Chinese do not follow each other very close some mods may have to be done to some engines for cylinder to fit. All high performance is for offroad use only.