Q - Can I flip a Thomson Stem? 
A - You may flip any Thomson stem to create different rise options. The logo on the Stem body will be upside down but you can flip your handlebar clamp so the handlebar clamp logo is right side up.

Q - Can X4 be used on a Roadbike?
A - Yes, X2 is lighter and allows better aero bar compatibility, but if you want to use X4 on a 31.8 Road Handlebar you may.

Q - Is X4 safe for carbon fiber?
A - X4 is engineered to work very well with both carbon handlebars and carbon steerer tubes. All torque requirements in our instructions must be followed for carbon components to be safe.

Q - Why did you change steerer clamps on X4? Were there problems with the old clamp?
A - We changed to save weight. There were no problems with the old clamp but it did add about 20 grams.

Q - What is the stack height of the X4 Stem?
A - 40mm, 2mm less than the Thomson Elite Stem.