CYLINDER SLEEVE 76-78 YAMAHA IT YZ 400 85mm VINTCO SLY04A
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VintCo cylinder sleeve made in the USA. This cast-iron sleeve is designed for vintage Yamaha YZ400 and IT400 cylinders from 1976-1978. It is manufactured with modern methods for an OEM-style fit and includes full dimensional information for installation by a qualified machinist. Features include correctly angled ports to minimize port-matching work, and it can be bored and honed to fit a stock-size VintCo piston kit. Specifications include a 85 mm bore, 145.4 mm height, 95.9 mm outside diameter, 98.7 mm flange outside diameter, 5.1 mm flange height, 5.9 mm wall thickness, 32 mm intake, and 36.2 mm exhaust port location. VintCo Part Number: SLY04A. Compatible piston part number: PSY04-00.
- SKU
- VIN-SLY04A
- Brand
- Vintco
- Availability
- In Stock (1)
Fitments (4)
| Make | Model | Year |
|---|---|---|
| YAMAHA | IT 400 | 1976 |
| YAMAHA | YZ 400 | 1976 |
| YAMAHA | YZ 400 | 1977 |
| YAMAHA | YZ 400 | 1978 |
- SKU
- VIN-SLY04A
- Brand
- Vintco
- Availability
- In Stock (1)
FULL DESCRIPTION
VintCo Replacement Cylinder Sleeve for Vintage Yamaha YZ400 and IT400
Restore your vintage Yamaha motorcycle's cylinder to peak performance with this high-quality VintCo replacement cylinder sleeve. This cast-iron sleeve is precision-made in the USA by Advanced Sleeve for VintCo, ensuring a reliable and durable solution for worn or damaged original cylinders.
Engineered with modern manufacturing techniques, this sleeve offers OEM-style fitment. The ports are meticulously angled to minimize the need for complex port-matching during installation. This sleeve is designed to be bored and honed to perfectly accommodate a stock-size VintCo piston kit, allowing for a complete and effective engine rebuild.
Key Features:
- Direct replacement cylinder sleeve for specific vintage Yamaha models.
- Ideal for rebuilding engines with worn or damaged cylinders.
- Pre-angled ports reduce installation labor.
- Can be machined to fit compatible VintCo pistons.
- Requires installation by a skilled and qualified machinist.
- Manufactured from durable cast iron for longevity.
- Made in the USA.
Specifications:
- Material: Cast Iron
- Bore Diameter: 85 mm
- Overall Height: 145.4 mm
- Outer Diameter: 95.9 mm
- Flange Outer Diameter: 98.7 mm
- Flange Height: 5.1 mm
- Wall Thickness: 5.9 mm
- Intake Port Size: 32 mm
- Exhaust Port Location: 36.2 mm
- Compatible Piston Part Number: PSY04-00
- Dimensional information is supplied for professional installation.
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
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