Aliexpress
Click here… to search for 100cm Stainless Steel Exhaust Muffler Pipe 24mm Silencer [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB. I found coupon for you. Check this out.
Link: Banggood product page
Coupon (13.49 USD): BGAMMT03
(CouponsFromChina.com tip: apply code in your basket (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): BG6eedc5, BGCarEle4, BGCarEle5, BGSCM11, BG845979, BGLMQ15, BGCAR639
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Not enough data to show price history chart… 10.99 USD is the only recorded price. It was not cheaper than that since we have saved it in DB.
You can set price alert (for Banggood).