Q: I have a Hori RAP 4/V that I am interested in installing new parts in. Can you tell me what parts are compatible with it? Also, what is the difference between the RAP 4 and RAP V?
A: The Hori RAP 4/V follows a widely observed industry standard in terms of parts compatibility, like many other arcade sticks. The main buttons are 30MM and the single button for options key is 24MM. The lever is the standard Hori Hayabusa and as a result is interchangeable with several other levers on the market. The RAP 4 and RAP V are basically identical, with the only major difference being what platform is supported. The RAP 4 supports PS3/PS4/PC, while the RAP V supports XBOX 360/One/PC. On to the parts!
Note: We also have a handy guide about the Hori Hayabusa! Check it out here: What works with the Hori Hayabusa?