CYLINDER SLEEVE 77-77 YAMAHA YZ 80 49mm VINTCO SLY11B

This VintCo cylinder sleeve is a replacement liner for the 1977 Yamaha YZ80, intended for rebuilding worn or damaged original cylinders on vintage machines where complete replacements can be difficult to source. It is manufactured in the USA from cast iron using modern production methods, with correctly angled ports to reduce port-matching work during installation. All dimensions are provided for installation by an experienced and qualified machinist, and the sleeve can be bored and honed to suit the stock-size VintCo piston kit.

Features

• Replacement cylinder sleeve for vintage Yamaha YZ80 engines
• Intended for rebuilding worn or damaged cylinders
• Designed for installation by an experienced and qualified machinist
• Correctly angled ports reduce port-matching work
• Can be bored and honed to suit the stock-size VintCo piston kit
• Produced using modern manufacturing techniques for OEM-style fitment and performance

Specifications

• VintCo Part Number: SLY11B
• Product Type: Cylinder Sleeve
• Material: Cast iron
• Country of Manufacture: USA
• Made for VintCo by Advanced Sleeve
• Compatible Piston Part Number: PSY11-00
• Bore: 49 mm
• Height: 100.6 mm
• Outside Diameter: 58.4 mm
• Flange Outside Diameter: 61 mm
• Flange Height: 3.8 mm
• Wall Thickness: 5.1 mm
• Intake: 21 mm
• Exhaust Port Location: 22.6 mm

Vehicle Fitments

• 1977 Yamaha YZ80