Box forks incorporate rider-specific designs that are strong, lightweight and reliable, to meet the demands of elite and professional racers. The X Series forks feature an all carbon crown and leg construction paired with cold-forged and CNC machined dropouts. Features: 3K Carbon weave Cold forged CNC'd aluminum dropouts Box One Stem Lock (Included) Models Size Dropouts Steer Tube Steerer Tube Material Fork Adapter Included Weight Weight Limit XS / Mini 20" 10mm 1" 7000 Series Aluminum No 14oz 99 lbs XE / Junior 20" 10mm 1" 7000 Series Aluminum No 16.9oz 99 lbs XL / Ex-Pro 20" 10mm 1-1/8"" 7000 Series Aluminum No 18.6oz Meets or exceeds EN Racing 14765 Standard X2 20" 20mm 1-1/8" Chromoly Yes 27.2oz Meets or exceeds EN Racing 14765 Standard X5 20" 20mm 1-1/8" - 1.5" Tapered Alloy Yes 20.4oz Meets or exceeds EN Racing 14765 Standard