VintCo SLY01A is a 56 mm replacement cylinder sleeve for 1974-1976 Yamaha YZ125 models. Made in the USA for VintCo by Advanced Sleeve, this cast-iron sleeve is intended for installation in the original cylinder by an experienced and qualified machinist. It is manufactured using modern materials and production methods, with correctly angled ports to reduce port-matching work, and it can be bored and honed to suit the stock-size VintCo piston kit PSY01-00.

Features

• Replacement cylinder sleeve for vintage Yamaha YZ125 models
• Made in the USA for VintCo by Advanced Sleeve
• Intended for installation by an experienced and qualified machinist
• Correctly angled ports reduce port-matching work
• Can be bored and honed to suit stock-size VintCo piston kit PSY01-00
• Manufactured using modern materials and production methods for OEM-equivalent fitment and performance
• Dimensional data provided for machining and installation

Specifications

• VintCo Part Number: SLY01A
• Material: Cast iron
• Bore: 56 mm
• Height: 117.5 mm
• Outside Diameter: 59.9 mm
• Flange Outside Diameter: 63.5 mm
• Flange Height: 5.2 mm
• Wall Thickness: 3.6 mm
• Intake: 22.5 mm
• Exhaust Port Location: 25.4 mm

Vehicle Fitments

• 1974 Yamaha YZ125
• 1975 Yamaha YZ125
• 1976 Yamaha YZ125