Go on Amazon and Ebay and look for carbon fiber landing gears. You will find quite a large selection of Chinese produced gear and prices are great and quality is good. Don’t be afraid of gear that seem too tall as these days we often run larger props than what was normal when that kit was made. Better too tall than having the prop in the dirt.
Another excellent source for aluminum gear is TnT landing gear. You can custom order anything you want and there is a large selection of standard designs. Tom can be a little slow on delivery times and sit-down when he gives you the quote but the product is excellent. When I need one of his gear I just make sure to order well in advance of when I need it. I use one of the Chinese carbon gear when I can.