Spectro Premium Primary Chaincase Heavy Duty Oil - HD 1qt

Spectro Premium Primary Chaincase Heavy Duty Oil is a V-twin specific formulation designed to protect the primary chaincase under high loads while maintaining smooth clutch engagement. Special polymers reduce clutch drag and slippage through consistent temperature stability, and it exceeds all OEM warranty requirements for Harley-Davidson Sportster and Big Twin engines.

Features

• Withstands high-load primary chaincase punishment
• Special polymers for consistent clutch engagement
• Reduces clutch drag and slippage
• Maintains temperature stability across riding conditions
• Exceeds OEM warranty requirements

Specifications

• Brand: Spectro
• Manufacturer Part #: 310315
• UPC: 831556001902
• Volume: 1 quart
• Weight: 1.99 lbs

Fitment

Fits V-twin motorcycles including Harley-Davidson Sportster and Big Twin models.

Frequently Asked Questions

Will this work in my Harley primary?

Yes — formulated specifically for Harley Sportster and Big Twin primary chaincases and exceeds all OEM warranty requirements.

Does this reduce clutch drag?

Yes — the special polymer blend maintains temperature stability to eliminate clutch drag and slippage.

How much oil is in the bottle?

One quart (1 qt) — the typical primary fill amount for most V-twin motorcycles.

Is this compatible with Indian Motorcycle primaries?

This is formulated for V-twin engines. Verify fitment with your Indian's service manual or contact your dealer before use.