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Quantity
1
Description
The HITLIS™ Power Valve Control Kits replace and enhance the power valve controls and governor configuration for all current generation Yamaha YZ250 and YZ250X motorcycles. With their patented design, the HITLIS™ Kits create the most effect...
Reviews
5.0
99 ratings
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Money well spent
Very happy with the Hitlis woods kit after getting to go on a good 25 mile mountain single track ride last weekend. Totally helped to smooth out the power valve opening. I also switched from a low comp to a high comp head insert at the same time as the Hitlis. You can now ride a gear higher in many situations and keep traction because I’m not spinning the tire as much. With it being smoother into the power it also did not wear me out near as fast. Tim’s customer service and YZ knowledge is second to none.
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Eric · 5 days ago
Hitlis is the first and only upgrade your yz needs.
If anyone reading reviews is having second doubts about weather or not you should buy the hitlis, stop thinking and just buy it. Besides the fact that Tim and his company have provided the best customer service experience I have ever had, the hitlis speaks for itself. This kit will turn your yz into a smooth calibrated weapon. It completely transforms the stock power curve into linear goodness with control at every throttle input. I can honestly say that there are absolutely no downsides to installing the hitlis, it is an improvement in every single way.
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Ryan · June 30, 2026
HITLIS iscmust have for yz from hard enduro to MX imo
I noticed quickly that the bike has a lot more power through bottom, mid, and high RPMs. It's a more linear, stronger, and aggressive power. The bike is more responsive and I feel a significant improvement on the over-rev (after the new carb settings and HITLIS installation. The rest is stock).
The bike handles better and really listens to me. Definitely worth the money!
To be honest, it feels a lot better, almost perfect(I ride hard enduro). Don't need to abuse my clutch as much as earlier, but I still need to test it in harder terrain to see how it works.