Gdrasuya10 Complete Bike Repair Tool Kit - Professional Bicycle Maintenance Set for Road & Mountain Bikes | Perfect for Home Repairs, Cycling Enthusiasts & DIY Bike Tuning

50mm bore single piece cylinder/head (increased weight capacity, lower operating temps, easier starting, sustained power output across varied rpm range)Upgraded Tunable High Performance Carburetor. Features: Choke lever on the handlebars, Main jet. (Can be re-jetted), Pilot jet, Copper oil needle, Idle RPM Screw, Idle Air Screw that delivers more fuel with the choke on, instead of restricting air. Great for cold weather starts!Upgrades include：44 Tooth Sprocket, Red Speed Carburetor, and Upgraded CDI.4 bolts attach the engine to your bike frame and this kit comes are 8mm vs the standard 6mm. That means the mounts are twice as strong and twice as secure.Bore＆stoke: 50mmx40mmIgnition Mode: CDI IgnitionMax.Power: 1.9kw/5500r/minCompression ratio: 6﹕1Transmission ratio: 18﹕1Cooling: Air-coolingStarting: Kict startingShifting way: sprocketLubricating oil: Two-stroke machine oilMax.speed: 48km/hSparking plug: Z4C 16MMMMax.Load capacity: 180kg / 396.83lbTank capacity: 2LFuel Type: 90#Fuel consumption: 5L/100kmEngine type: Gasoline engineN.W ：11kg / 24.25lbG.W：12kg / 26.46lbCtn size：47*43*17cm/ 18.50*16.93*6.69lbInstallation Instructions:Not includedNOTE:Installation Manual Is NOT Included, Professional Installation Is Highly RecommendedPackage includes:1 x Engine1 x CDI Assembly1 x Fuel Tank (with Valve)1 x Carburetor Assembly1 x Exhaust Muffler1 x Clutch handle1 x Left Handle Grip1 x Twist-grip Throttle with Kill Switch1 x Clutch Cable1 x Throttle Cable1 x Chain1 x Sprocket1 x Chain Idler Pulley1 x Chain Guard1 x Set of Other Mounting Accessories