I lost the internal flapper for one of my 4" exhaust tips. Its a straight flange with a slant cut. Top of slant cut is 7" from flange and bottom of slant cut is 3" from flange. Inside of tip is 4" long to outside flange. I believe its a stainless marine tip but it has no brand markers that are visible. The tip is on a 1999 Baja 272 Islander with Captains Choice. Does anyone have any advice to replace this exhaust tip with internal stainless flapper with horizontal hinge. I assume its easier to just replace the tip and sell the used unit on eBay. Any recommendations for a good price and availability for this exhaust tip?

Why don't you just buy internal flapper inserts.

Check the numerous FB forums for Baja. Someone might have one laying around.

I have a set of 4" strait cut tips with the flappers off a 96 272. let me know if you are interested

If the internal flappers are weighted, then they are probably Corsa tips.

x2 easy install and work great - this is the route I chose when doing my rebuilds

4" Slip-On Silent Seal Flap Assembly, Stainless Steel - CP Performance