Bel-Ray Big Twin Transmission Oil - 1l (12/Case Sold Ea)

Bel-Ray Big Twin transmission oil is a 1-liter bottle formulated for V-twin motorcycles with separate transmissions and final drives. Engineered to reduce gear wear, quiet gear whine, and improve shift quality in Harley-Davidson and Indian big-twin engines.

Features

• API GL-5 specification
• Formulated for separate transmissions and final drives
• Reduces gear wear and extends component life
• Quiets gear whine and improves shifting
• Works in air-cooled and liquid-cooled big-twin transmissions

Specifications

• Brand: Bel-Ray
• Manufacturer Part #: 96900-BT1
• UPC: 690509401318
• Capacity: 1 liter
• Weight: 2.15 lbs
• Dimensions: 8 in L x 4 in W x 2 in H

Fitment

Fits V-twin motorcycles with separate transmissions and final drives, including Harley-Davidson Big Twin and Indian Motorcycle models with air-cooled and liquid-cooled engines.

Frequently Asked Questions

What's the difference between this and regular motor oil?

Transmission oil is a heavier gear oil formulated specifically for the higher pressures and sliding-gear action in a motorcycle transmission. Motor oil is too thin.

Will this work in my Sportster transmission?

This oil is formulated for Big Twin transmissions and final drives. Sportster and some other models may require a different viscosity — check your owner's manual or parts diagram.

How often should I change my transmission oil?

Most Harley and Indian owners change transmission oil every 20,000 miles or as recommended in the factory service manual. Inspect the sight glass or drain plug during routine maintenance.

Does this come in larger quantities?

This listing is for a single 1-liter bottle. A 12-pack case is available for shops and multi-bike owners — contact our parts department for bulk pricing.