The toughest stem your money can buy&44; this one can take some serious abuse: great for Downhill & Freeriding in 1-1/83D forged & machined construction for maximum strength to weight ratio Shot peened&44; anodized finish increases fatigue strength Forged 4-bolt front clamp holds handlebar securely 31.8 clamp diameter for increased stiffness & control Opposing steerer tube bolts ensure strong&44; even clamping force Knock-Rated 2 year no-questions warranty Made from 6061-T6 aluminium Weight: 230 grams (1-1/8 inch&44; 50 mm)