Hollow Mini:~ Mini Hollow stems are cold forged from the highest quality 6061-T6 aluminum. They also feature an open skeletal design and single mid-bolt wedge mounting system, making them among the lightest weight mini stems on the market. A 40-millimeter extension stem weighs just 132 grams grams/4.6 ounces.
• Single-bolt wedge clamp
• Stem must be mounted on a fork with at least 28 millimeters of exposed steerer tube
• Meets or exceeds ENBMX Category 2 standards
• Not compatible with carbon fiber steerer tube forks