X2 is for the rider who understands what it takes to stay up front. Energy wasted in flex is the enemy on a road bike. X2 keeps your energy moving forward. The Thomson X2 Road stem allows you to realize the benefits of stiffer forks and stiffer 31.8 bars. X2 offers precise steering, tracking, and more control while riding, all wrapped up in a beautiful design. Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTB The Thomson X2 features a lighter, 2-bolt handlebar clamp. The interlocking handlebar clamp of the X2 makes is as torsionally strong as other 4-bolt designs, while being lighter and narrower. Low 36mm stack height. X2 is available in 2 rise options; 10° and 17°. Both the 10° and 17° stem can be run with a positive or negative rise, and the reversible graphics will be right either direction. 10° stems work well for average riders/amateur racers, while those who want a very aggressive aero position or who want a very upright position can use the 17° stem to meet their fit needs. Made in the USA Tech Specs +- 10 Deg or +-17 Deg 1-1/8th 31.8mm Handlebar About Thomson L.H Thomson was founded in 1981 by Loronzo "Ronnie" and Margaret Thomson. Ronnie an Ex Engineer for McDonnell Aircraft started Thomson to focus on the Manufacturing of precision machined parts using numerically controlled equipment for the aerospace industry (CNC). In 1994 L.H Thomson expanded to create its own brand of patented bike components using aerospace quality, design, principles and Manufacturing which we know today as Thomson bike products.