Bel-Ray EXP Semi-Synthetic Ester Blend 4T Engine Oil - Semi-SYN Ester OIL 15w50…

Bel-Ray EXP is a synthetic ester blend 4T engine oil in 15W-50 viscosity, formulated for air-cooled and liquid-cooled motorcycle engines. High film strength and oxidation resistance protect engine components while prolonged wet clutch life keeps friction plates engaged and responsive.

Features

• Synthetic ester base with select synthetic and petroleum components
• High film strength for superior component protection
• High viscosity index for stable performance across temperature ranges
• Improved oxidation resistance extends oil life
• Prolonged wet clutch life
• API SN, JASO MA2 certified

Specifications

• Brand: Bel-Ray
• Manufacturer Part #: 99130-B1LW
• UPC: 690509200232
• Viscosity Grade: 15W-50
• Type: Semi-synthetic ester blend
• Weight: 2.12 lbs
• Certifications: API SN, JASO MA2

Frequently Asked Questions

Is this oil safe for wet clutch motorcycles?

Yes — Bel-Ray EXP is formulated to prolong wet clutch life and is JASO MA2 certified for clutch compatibility.

What viscosity grade is this?

15W-50, suitable for air-cooled and liquid-cooled four-stroke engines in a wide range of temperatures.

Does this meet modern motorcycle oil standards?

Yes — API SN and JASO MA2 certified for current motorcycle engine specifications.

Can I use this in my Harley or Indian?

Bel-Ray EXP works in any four-stroke motorcycle engine. Check your owner's manual for the recommended viscosity grade (15W-50 covers most air-cooled cruisers).