Cast MTB - Stem Direct mount: 31.8 mm clamp 50mm length 0 degree - Black The DFX stem, otherwise known as Downhill FX (downhill-effects) , is our top-of-the-range race-ready stem designed and developed with Greg Minnaar & Norco Race Division. The DFX stem is engineered to let riders precisely record and quantify their cockpit setup, making it easy to fine-tune adjustments for a consistent, confidence-inspiring feel, race after race. It also improves communication between riders and mechanics when making changes. Best paired with SFX Handlebars . EFBE certified. Specifications Length: 50mm Diameter: 31.8mm 0 rise Material: Al-7075 Weight: 185g Fully CNC’d Fits Rockshox Boxxer, Fox 40, any other forks that use IS mount Clamp diameter 35mm or 31.8mm Comes with steel bolt hardware as standard