--- product_id: 9653777 title: "Bel-Ray Big Twin Transmission Oil Liter 96900-BT1QB" brand: "bel-ray" price: "1001953₫" currency: VND in_stock: true reviews_count: 13 category: "Bel Ray" url: https://www.desertcart.vn/products/9653777-bel-ray-big-twin-transmission-oil-liter-96900-bt1qb store_origin: VN region: Vietnam --- # Reduces gear noise & eliminates clunking 85W-140 SAE viscosity for optimal gear protection Superior anti-wear formula for heavy loads Bel-Ray Big Twin Transmission Oil Liter 96900-BT1QB **Brand:** bel-ray **Price:** 1001953₫ **Availability:** ✅ In Stock ## Summary > ⚙️ Shift Smooth, Ride Loud—But Keep the Noise Out! ## Quick Answers - **What is this?** Bel-Ray Big Twin Transmission Oil Liter 96900-BT1QB by bel-ray - **How much does it cost?** 1001953₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/9653777-bel-ray-big-twin-transmission-oil-liter-96900-bt1qb) ## Best For - bel-ray enthusiasts ## Why This Product - Trusted bel-ray brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Noise-Reducing Power:** Silence the roar—engineered to drastically cut down transmission noise for a refined ride. - • **Heavy-Duty Protection:** High-viscosity synthetic oil shields gears under intense acceleration and load. - • **Proven Rider Favorite:** Top-rated by Harley enthusiasts for unmatched smoothness and durability. - • **Smooth Shifting Mastery:** Experience effortless gear changes with minimized friction and clunk-free transitions. - • **Trusted V-Twin Compatibility:** Specifically formulated for Big Twin air/liquid-cooled transmissions, meeting API GL-5 standards. ## Overview Bel-Ray Big Twin Transmission Oil is a premium synthetic 85W-140 multi-grade gear oil designed for 4-stroke V-Twin motorcycle transmissions. It delivers superior anti-wear protection, reduces gear noise, and ensures smooth shifting under heavy loads, making it the go-to choice for Harley riders seeking performance and reliability. ## Description BEL-RAY Big Twin Transmission Oil is a multi-grade 4-stroke V-Twin transmission oil formulated for sliding contacts of gears in heavily loaded 4-stroke transmissions. Superior anti-wear Smooth shifting Reduces gear noise Quart . The Bel-Ray Big Twin Transmission Oil has an SAE viscosity of 85W-140. This viscosity has been proven through real-world studies to reduce gearbox noise, make shifting easier, and eliminate "clunking" when shifting compared to thinner viscosity oils. The high viscosity helps keep gear wear to a minimum and absorbs shocks when applying heavy acceleration loads to the gears. The Big Twin Transmission oil is the same viscosity as the Bel-Ray Gear Saver Hypoid Gear Oil 85W-140 that customers have used for many years in their V-Twin transmissions. Review: #1 Gear Oil for Harley - This is the best transmission gear oil I have been using for the past 2 years, I have tried 4 other brands and this one hands down is the smoothest. Plus its sold cheaper on desertcart . 5 stars. Review: Fantastic - The best of the best cvo ultra classic eomt ever use anything else but belRay baby! ## Features - Superior lubricity minimizes sliding friction for maximum power. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005K60FJK | | Best Sellers Rank | #5,713 in Automotive ( See Top 100 in Automotive ) #13 in Gear Oils | | Brand | Bel-Ray | | Brand Name | Bel-Ray | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 709 Reviews | | Included Components | Bel-Ray 96900-BT1 | | Item Form | Oil | | Item Type Name | Gear Oils | | Item Weight | 2 Pounds | | Liquid Volume | 1 Liters | | Manufacturer | Bel-Ray | | Material | Synthetic | | Model Number | 96900-BT1 | | Number of Items | 1 | | Package Information | Bottle | | Part Number | 840-1483 | | Recommended Uses For Product | Transmission Oil | | Specific Uses For Product | Motorcycle transmissions and final drives, Big Twin air-cooled/liquid-cooled transmissions and final drives, meeting API GL-5 standard | | UPC | 690509401318 690509114225 | | Unit Count | 33.814 Fluid Ounces | | Upper Temperature Rating | 350 Degrees Fahrenheit | | Viscosity | 85W 140 | | Warranty Description | Manufacturer | ## Product Details - **Brand:** Bel-Ray - **Item Weight:** 2 Pounds - **Liquid Volume:** 1 Liters - **Material:** Synthetic - **Package Information:** Bottle ## Images ![Bel-Ray Big Twin Transmission Oil Liter 96900-BT1QB - Image 1](https://m.media-amazon.com/images/I/71Kw5WX44eL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ #1 Gear Oil for Harley *by P***R on January 18, 2026* This is the best transmission gear oil I have been using for the past 2 years, I have tried 4 other brands and this one hands down is the smoothest. Plus its sold cheaper on Amazon . 5 stars. ### ⭐⭐⭐⭐⭐ Fantastic *by J***N on April 12, 2026* The best of the best cvo ultra classic eomt ever use anything else but belRay baby! ### ⭐⭐⭐⭐⭐ Great Stuff *by L***S on July 22, 2025* Works awesome in Harley Transmission, makes it smooth and less noise and shift easier. Been using Bel Ray for years in my offroad vehicles ## Frequently Bought Together - Bel-Ray Big Twin Transmission Oil Liter 96900-BT1QB - Bel-Ray V-Twin Primary Chaincase Lubricant | 1 Liter | SKU: 96920-BT1 - K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Harely Davidson Motorcycles, KN-171B --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/9653777-bel-ray-big-twin-transmission-oil-liter-96900-bt1qb](https://www.desertcart.vn/products/9653777-bel-ray-big-twin-transmission-oil-liter-96900-bt1qb) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-19*