ELITE X4 : 31.8 Mountain
X4 is absolutely the best combination of strength and weight available. Enduro and downhill riders can run Thomson confidently, yet X4 is light enough for cross country and cyclocross. X4 offers precise steering and tracking for the ultimate in control while riding.
ELITE X2 : 31.8 Road
The Thomson X2 features a lighter, 2-bolt handlebar clamp. The interlocking handlebar clamp of the X2 makes it as torsionally strong as other 4-bolt designs, while being lighter and narrower.
BMX : 22.2
The stem that is strong enough for freestyle and light enough to race. 6 bolts up front to hold your bars no matter what.