The VintCo KMB027 main bearing and seal kit is a complete engine rebuild set for Maico 5-speed models, covering 250 (1975-1976), 400 (1975) and 440 (1975). It includes newly manufactured main bearings and crankshaft oil seals, produced with modern materials and manufacturing techniques to provide OEM-level fitment and performance during engine rebuilds.

Features

• Complete main bearing kit for vintage motorcycle engine rebuilds
• Includes two main bearings and two crankshaft oil seals
• Intended for replacement of engine main bearings and seals
• Manufactured using modern materials and manufacturing techniques
• OEM part numbers provided for fitment reference

Specifications

• VintCo Part Number: KMB027
• Bearing size: 25 x 62 x 17
• Bearing size: 25 x 62 x 25
• Oil seal size: 25 x 52 x 8
• Oil seal size: 32 x 52 x 8

Cross-Reference OEM Part Numbers

• Bearing 25 x 62 x 17: OEM 425
• Bearing 25 x 62 x 25: OEM 693
• Seal 25 x 52 x 8: OEM 3469
• Seal 32 x 52 x 8: OEM 547

Vehicle Fitments

• 1975 Maico 250
• 1975 Maico 400
• 1975 Maico 440
• 1976 Maico 250