This VintCo cylinder sleeve is a replacement sleeve for vintage Maico 490 models from 1981 to 1982, intended for use where a complete replacement cylinder may be difficult to source. Manufactured in the USA for VintCo by Advanced Sleeve, it is designed for installation by an experienced and qualified machinist and uses modern manufacturing methods to provide OEM-equivalent or better fitment and performance. The port angles are set to reduce port-matching work, and the sleeve can be bored and honed to suit the stock-size VintCo piston kit.

Features

• Replacement cylinder sleeve for vintage machines where a complete cylinder is difficult to obtain
• Fits 1981-1982 Maico 490 models
• Manufactured for VintCo by Advanced Sleeve
• Designed for installation by an experienced and qualified machinist
• Port angles set to reduce port-matching work
• Can be bored and honed to suit stock-size VintCo piston kit
• Intended to provide OEM-equivalent or better fitment and performance

Specifications

• VintCo Part Number: SLM04A
• Item Category: Cylinder Sleeve
• Material: Cast iron
• Country of manufacture: USA
• Compatible piston part number: PSM04-00
• Bore: 86.5mm
• Height: 156.8mm
• Outside diameter: 94.5mm
• Flange outside diameter: 100.2mm
• Flange height: 10mm
• Wall thickness: 4.8mm
• Intake: 33.2mm
• Exhaust port location: 45.9mm

Vehicle Fitments

• 1981 Maico 490
• 1982 Maico 490