Amazing product support, and works as intended.

Single best thing you can do for your yz/yzx.

Customer service is beyond amazing.
The kit is really simple to install
The change in power delivery is just awesome
Better than described...
Just buy it!!! You wont be disappointed......

The Hitils worked out great, smoothed out the power curve without losing anything.

Product preforms exactly as advertised. Install videos made it easy. Kit came with everything I needed. Performance change in my bike has created a super smooth power curve. Easier to apply power and maintain traction and no loss of top end power. Would highly recommend this product.