Aliexpress
Click here… to search for Surpass Hobby ROCKET 540 V4S RC Motor V2 160A on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (125.65 USD): BGf1cb15
(CouponsFromChina.com tip: just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG5bd945
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Surpass Hobby ROCKET 540 V4S RC Motor V2 160A.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).