Jack MacDonnell

Tuner Transformation presenter on Speed TV

"Yes, this little wonder product, referred to as a ‘driver stability’ device works like you can’t believe. It is one of the best bangs for the bucks out there that you can buy. You want to improve the performance of your car – start with your own driving performance.

It is one of the best bangs for the bucks out there that you can buy.Jack MacDonnell Tuner Transformation

Enthusiasts everywhere are using the CG-Lock to help improve their car control skills by keeping them firmly planted in their seat. It installs in mere minutes and will help reduce your autocross & Solo1 times and improve your drifting ability 10-fold."

Watch Jack’s Video

Alternative link to video on YouTube