Such a cool product. After experimenting with different cylinder heads and not getting what I wanted it was great to see the change from the hitlis system. I can actually roll the power on now!

Hitliss is a must for the YZ! second year I have had plenty of hours to get a feel. 2006 YZ with X trans and GYTR flywheel. The wood version is great for trail and track. The lugability of the motor is unmatched! you can ride a gear high and always has power and traction. It is almost diesel like in power down load and mid range to top end is still stock YZ. Really transforms the motor and makes it a much needed updated to the YZ motor. If you are in doubt, just purchase! Thanks for a great product!

Really lets the bike stay low in the RPM and use the torque rather than jumping to 10k at half throttle. Tight woods with rocks and short steep hill climbs we're much more manageable than before. I don't feel like she's going to jump out from underneith me. Same goes for at the track.

Did exactly what i hoped it would! I am using it strictly for motocross (51yr old vet)..still has crisp two stroke respone, with a nice linear pull with no surprises! I have it set at .9 woods setting and will probably leave it right there..excellent product!

Great Product, makes riding theYZ much easier.
Thank you Tim.