This cylinder sleeve is a replacement component for the 1981 Yamaha YZ80, intended for rebuilding original cylinders on vintage machines where complete replacements can be difficult to source. Made in the USA for VintCo by Advanced Sleeve, it uses modern materials and manufacturing methods and is supplied with installation dimensions for use by an experienced and qualified machinist. The port angles are arranged 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 Yamaha YZ80 applications
• Fits 1981 Yamaha YZ80
• Made for VintCo by Advanced Sleeve
• Designed to help restore worn or damaged original cylinders
• Ports angled to reduce port-matching work compared with other sleeves
• Can be bored and honed to suit the stock-size VintCo piston kit
• Intended for installation by an experienced and qualified machinist

Specifications

• VintCo Part Number: SLY12A
• Piston Part Number: PSY12-00
• Material: Cast iron
• Country of manufacture: USA
• Bore: 49 mm
• Height: 99.7 mm
• Outside diameter: 59.7 mm
• Flange outside diameter: 62.9 mm
• Flange height: 3.8 mm
• Wall thickness: 5.7 mm
• Intake: 20.5 mm
• Exhaust port location: 21.6 mm

Vehicle Fitments

• 1981 Yamaha YZ80