https://www.ebay.com.au/itm/For-Lexus-IS250-IS350-4DR-F-Type-Carbon-Fiber-Rear-Tail-Trunk-Lid-Spoiler-Wing/302574271794?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
after market, so heaps of double sided tape hahah
wasnt easy taking off the stock one
undo 2 bolts and use fishing line to go between the boot and the spoiler
mark the original spots with tape so you dont forget where it goes
with a bit of brute force you lift the spoiler up and the double sided tape starts lifting.
car is garaged so it should last and not fade i hope
also bought a toms rear diffuser so waiting for that to arrive before putting it on