HIGH-PERFORMANCE STEM: CNC weight optimized for 31.8mm bars. Our stem is among the shortest available better to fit the latest generation of super long bikes and super-wide bars, built for the demands of rough and tumble mountain riding. SPANK SPLIT Stem, 38mm Gun Metal weight optimized single crown stem for 31.8mm handlebars. Cockpit setup index lasered onto stem. Ultra-short stack height and true zero-degree rise. The Spank Split 31.8 Stem is a lightweight, single-crown stem designed for Enduro use with 31.8mm handlebars. It boasts Human Factor Design with micro size increments to fit various rider sizes and styles. The stem offers a Human Factor cockpit setup index for adjusting upsweep and backsweep. It features an ultra-short stack height and true zero-degree rise. The chamfered bar clamp reduces stress risers and enhances handlebar fatigue life. A forged 2-piece faceplate design minimizes weight without compromising bar clamp security or stiffness. The stem's shot peen-anodized surface boosts strength, durability, and fatigue life.