I actually did a video on this product and I really wish this would have been around when I first had the YZ250: https://www.youtube.com/watch?v=vNxSZa9Fmx4&t=1s

The hit on the YZ turns into controllable pull from bottom to top, you don't really lose anything on top you just get there in a more predictable fashion. The bike doesn't become more 4 stroke like it's more of a feeling like a mix between the power curve of a TPI and a TBI KTM.

The installation is fairly easy and the install videos cover every conceivable encounter you may face installing the product. Also the support and insight from the developer along with their interest in following up with users of the Hitlis system is refreshing as it is helpful.

I would put this improvement as one of the most dramatic changes you can do to your bike off the bat and highly recommend it.

Took about a 1hr to install. Everything when smooth. I suggest get a set of extra gaskets. And governor bearings. Just incase. Taking it out on my first ride I could tell instantly the smooth power delivery. I do a lot of hard enduro riding. And finding traction and control the bike is a lot easier. 100% a must on a YZ250X

Well for anyone who is interested in a YZ295 BB Hitlis review here's one: The HITLIS set up is awesome! It is noticeably healther off the bottom/mid and provides impressive overrev. In summary the bike feels 10lbs lighter cuz it just responds so effortlessly with strong power thru the entire RPM range. I don't know what to say but it's so impressive, respectfull power but so predictable and linear. For example on a decent cat litter deep DG climb behind my buddy on a KTM 350 EXC-F Six Days with the same rear tire both at 12 psi, the YZ closed in and had to pass at the top of the climb cuz the HITLIS was pulling 4th gear tractoring while the 350 was searching for grip. I find this set up so impressive with a combination of super responsive throttle response for blipping doubles over random whoops or rock/log features while a gear higher than usual to just rolling the power on a climb or straight and the front end just hovers, with predictable coorelation to the right wrist. I've got over 70 hours and counting on my HITLIS 295. So impressed with the useable power, and reliability. When you want the bike to do something and it just response without hesitation and the performance becomes an organic extention of your intentions... that's a game changer for me! Sorry for the ramble but it's pretty sik and I needed to tell someone... Thanks to the crew at Productive Power... the future looks bright!

My bike is put together and running great! I actually found myself being much more confident on the HITLIS YZ than my 2023 300 XC. Last week my dad and I were able to fill his bull elk tag. I ended up packing out the whole thing on my HITLIS bike! In total I rode 33 miles of single track in the mountains carrying 80lbs of elk at a time. The smooth powerband was definitely the key to success trying to ride with all of that weight. If you can't tell, I'm a big fan! I've been trying to talk my other YZ buddies into pulling the trigger and ordering HITLIS for their bikes. I'm hoping that they'll be convinced when they finally get to ride mine.

Finally got out on the bike today. Ran pretty sweet. Left the xc dome and flywheel weight installed. Bikes a total tractor. I can see how guys would want to go back to the mx dome. I think for my type of riding I'm gunna keep it as is for the moment. The traction and rev control is off the charts. Like I everyone else I found myself running a gear higher (3rd in the flowy tight stuff) and overall feeling smoother. Way less clutch work. Thanks for the great product. Looking forward to getting some more time on it.