An Aluminum Integrated Front Bulkhead That Improves Assembly Precision In The Front Area Of The YD-2. In The Standard Kit, There May Have Been Cases Where Slight Distortions Or Twists Occurred When Assembling The Left And Right Bulkheads, But By Using This Integrated Bulkhead, Precision Is Increased, And Straight-Line Stability And Left-Right Steering Balance Are Improved.