Log In / Register
0 Checkout
Bel-Ray Big Twin Transmission Oil

Please select a to check availability, or to add this item to your Shopping Cart or Wish List.


Savings (10%):

Select qty:

Please select a to view availability.
Add to Wish List

Bel Ray Big Twin Transmission Oil

A transmission oil designed purely for divorced transmission assemblies. Trust your trans to a product designed specifically for it.


  • Superior lubricity minimizes sliding friction for maximum power
  • Special lubricity additives reduce sliding friction for exceptionally smooth and quiet shifting
  • Resists viscosity breakdown caused by gear shearing action
  • Exclusive Bel-Ray extreme-pressure chemistry protects gear components from the destructive effects of shock loading
  • Superior oxidation protection prevents thermal oil degradation for extended performance
  • High-temperature protection, high-viscosity-index base oils maintain film strength over a wide temperature range
  • Distinctive red color makes transmission leaks easy to detect

Product Style RevZilla Item # Manufacturer Product # Availability
1 Liter 819821 96900BT1/96900-BT1 In Stock: Ships within 24 hours


Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the Bel-Ray Big Twin Transmission Oil? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.