Package Contents: 1x 80cc 2-stroke Engine, 1x Back Teardrop Gas Tank (2L), 1x Carburetor, 1x CDI Ignition Assembly, 1x Throttle Cable, 1x Throttle Handlebar Set, 1x Standard Bike Chain, 2x 9-hole Clamp Pads, 1x Petcock Valve, 1x Chain Cover, 1x Muffler, 1x 44T Zinc Plated Chain Sprocket, 1x Drive Chain Idler, 1x Push Clutch Lever, 1x Spark Plug, 1x Set Accessories.
Just check coupons out (with price alert and history). What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
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Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($186.39): BGdcbfa8
2. ($198.04): BGAUTO22
3. ($219.01): BG00c906
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 502C6B, TTxBG10, BGHT16, BGauto21, BGDis1024, 33461, BG153968, BgAuMotor, BGCL001, BGAutos, BGMotorYH, BGCARELEC, BGINMO, BGAFF10OFF, BGCuponation10, 7bcdf9, BGHONEY2110, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BGDNMCP, BGDNMCL, BANGGOODSD, 00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG1efeb0, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Check out price history chart (for all/most countries) for 80cc 2-stroke Bike Engine Motor Kit. The lowest price was: $97.99.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).