BEL-RAY SKU: 840-1616

Bel-Ray EXP Semi-Synthetic Ester Blend 4T Engine Oil - Semi-SYN Ester OIL 20w50…

$14.99
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NOT SURE ABOUT FITMENT?

Bel-Ray EXP is a semi-synthetic ester blend 4T engine oil rated 20W-50, formulated for air-cooled and liquid-cooled motorcycle engines. High film strength and oxidation resistance protect critical engine components while maintaining stable viscosity across temperature extremes.

Features

  • Synthetic ester blend 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 for extended engine life
  • Prolonged wet clutch life
  • API SN and JASO MA2 rated

Specifications

  • Brand: Bel-Ray
  • Manufacturer Part #: 99131-B1LW
  • UPC: 690509400007
  • Viscosity Grade: 20W-50
  • Oil Type: Semi-Synthetic Ester Blend
  • Weight: 2.14 lbs
  • Package Dimensions: 8 in L x 4 in W x 2 in H

Frequently Asked Questions

What bikes can I use this oil in?

Suitable for 4-stroke motorcycle engines. Check your owner's manual to confirm 20W-50 viscosity is correct for your model and climate.

Is this oil wet-clutch safe?

Yes — Bel-Ray EXP is formulated to prolong wet clutch life and is safe for bikes with wet multi-plate clutches.

What do API SN and JASO MA2 ratings mean?

API SN is a current gasoline engine oil standard. JASO MA2 is the motorcycle-specific standard ensuring compatibility with wet clutches and engine materials.

Can I mix this with my current oil?

Mixing different oils is not recommended. Drain and flush the engine thoroughly before switching to Bel-Ray EXP.

BRANDBel-Ray
TYPEChemicals
SKU840-1616
WEIGHT2.14 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
9 RATINGS
5★ 9
4★ 0
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Sep 16, 2016

Smooth shifting, reduced oil consumption

I was running my DL650 on Delo, but I didn't like how it shifted, and I was burning almost a quart between oil changes. I switched to Bel Ray on a road trip, and the difference was noticeable immediately. Shifts were smoother, and I can go 3500 miles without having to add any oil. I don't know why it works, but it does. It's worth the extra couple dollars.

— Aaron M
✓ VERIFIED
May 10, 2019

Great oil

I use this oil in my sport bike and it works great.

— Joshua R
✓ VERIFIED
May 6, 2024

Oil

Good price, Fast shipping

— WAYNE A
✓ VERIFIED
Nov 6, 2022

Great product. Extends the life in all my engines.

— Daniel F
✓ VERIFIED
Mar 23, 2020

5 Stars

— Anonymous
✓ VERIFIED
Apr 20, 2019

5-Star

— Anonymous