Fits: Mugen MBX6 Mugen MBX6T FEATURES: This Center Diff Top Plate is CNC machined from 7075 aircraft grade aluminum and is Black Anodized. These are designed to increase rigidity and add strength. Plastic bushings are replaced with ball bearings for smoother braking action. INCLUDES: (1) Center Diff Top Plate (2) 5mm x 9mm x 3mm Flanged Bearings SPECS. Material: 7075 Aircraft Billet Aluminum Weight: 4.60 grams (without bearings)