--- product_id: 9653777 title: "Big Twin Transmission Oil Liter 96900-BT1QB" brand: "bel-ray" price: "€ 59.01" currency: EUR in_stock: true reviews_count: 13 category: "Bel Ray" url: https://www.desertcart.hr/products/9653777-big-twin-transmission-oil-liter-96900-bt1qb store_origin: HR region: Croatia --- # Reduces gear noise & eliminates clunking Withstands up to 350°F for heavy acceleration loads 85W-140 SAE viscosity for optimal gear protection Big Twin Transmission Oil Liter 96900-BT1QB **Brand:** bel-ray **Price:** € 59.01 **Availability:** ✅ In Stock ## Summary > ⚙️ Shift Smooth, Ride Loud—But Keep Your Transmission Quiet! ## Quick Answers - **What is this?** Big Twin Transmission Oil Liter 96900-BT1QB by bel-ray - **How much does it cost?** € 59.01 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/9653777-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-Free Rides:** Say goodbye to annoying gearbox clunks and enjoy a quieter, more refined transmission. - • **Smooth Shifting Mastery:** Experience effortless gear changes with superior lubricity that minimizes sliding friction. - • **Proven Viscosity Formula:** Trusted 85W-140 viscosity ensures maximum power transfer and gear longevity. - • **Heavy-Duty Heat Resistance:** Engineered to perform flawlessly even under extreme temperatures up to 350°F. - • **Millennial-Approved Reliability:** Join thousands of riders who swear by Bel-Ray for smooth, durable motorcycle transmission performance. ## Overview Bel-Ray Big Twin Transmission Oil is a premium synthetic 85W-140 multi-grade oil designed specifically for heavily loaded 4-stroke V-Twin motorcycle transmissions. It reduces gear noise, smooths shifting, and protects gears under high heat and heavy acceleration, making it a top choice for riders seeking reliable, long-lasting transmission performance. ## 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: Great oil! - Amazing transmission oil. I am running this in my 2019 Harley M8 107. It's been awesome, it's running smoothly, I read from others that it made the transmission quiet down. I don't know of that's true, I'm only in like 750 miles, but here in a week or so I will do about 1500 miles, and I'll update things. So far, it's preformed better than the Harley oil I used last time. I'll continue to use this for my changes! I'm completely sold on it. Review: Works great. - Good oil, smooth shifting, good value for the money. ## Features - Superior lubricity minimizes sliding friction for maximum power. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005K60FJK | | Best Sellers Rank | #7,567 in Automotive ( See Top 100 in Automotive ) #19 in Gear Oils | | Brand | Bel-Ray | | Brand Name | Bel-Ray | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 738 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 ![Big Twin Transmission Oil Liter 96900-BT1QB - Image 1](https://m.media-amazon.com/images/I/71Kw5WX44eL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great oil! *by U***H on June 10, 2026* Amazing transmission oil. I am running this in my 2019 Harley M8 107. It's been awesome, it's running smoothly, I read from others that it made the transmission quiet down. I don't know of that's true, I'm only in like 750 miles, but here in a week or so I will do about 1500 miles, and I'll update things. So far, it's preformed better than the Harley oil I used last time. I'll continue to use this for my changes! I'm completely sold on it. ### ⭐⭐⭐⭐⭐ Works great. *by A***D on May 17, 2026* Good oil, smooth shifting, good value for the money. ### ⭐⭐⭐⭐⭐ Harley oil *by D***O on June 7, 2026* Good quality oil ## 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.hr/products/9653777-big-twin-transmission-oil-liter-96900-bt1qb](https://www.desertcart.hr/products/9653777-big-twin-transmission-oil-liter-96900-bt1qb) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-17*