Recently installed the Hitlis Power Valve system on my 2024 YZ250X. I've had a lot of people asking me about this thing and started to get more and more curious as more and more people were asking about it.
Really impressed with this thing! Pretty straightforward to install with some really good "how-to" videos. Performance wise, just have a watch of the video to hear the stoke! Hahah
https://productivepowerllc.com/en-ca/products/hitlisyz250?srsltid=AfmBOoqC9TBrmClDkcwd_nEPHzffxUgTFbO_1R3ys12JSfWJTuGriQRv