Motul Twin Oil Change Kit for H-D Milwaukee‑Eight Engines — 5L 20W50 Engine + 75W90 Gear & Primary Fluids, Filter & O‑rings

The Motul Twin Oil Change Kit for H-D® Milwaukee-Eight® engines is a complete service pack that contains engine oil, gear oil, primary fluid, filter and accessories needed for a full oil change on Big Twin Milwaukee-Eight cruisers.

This kit groups the specific lubricants and hardware Harley-Davidson Milwaukee-Eight engines require, making routine maintenance faster and more reliable. Motul formulated the included Twin 20W50 engine oil and the synthetic gear and primary fluids with heavy-duty motorcycle use in mind, while the filter and O-rings supply the physical components you’ll need to replace during service.

What exactly is included in the kit?

The kit bundles all necessary fluids and small parts to perform an oil, primary and transmission service on compatible H-D Milwaukee-Eight models. That reduces shopping time and ensures you use fluids matched for Big Twin operating conditions.

• 5 L (5.28 qts) Motul Twin 20W50 engine oil
• 1 qt Motul Synthetic SAE 75W90 gear oil (API GL-5)
• 1 qt Motul Synthetic primary oil for wet-clutch grip
• Premium black oil filter with integrated hex nut
• 3 replacement O-rings, shop rag, disposal funnel and crankcase plaque

How do these oils suit Milwaukee-Eight engines and transmissions?

Each fluid is selected for the different mechanical environments found on Big Twin motorcycles: high-temperature engine bearings, shock-loaded transmissions and wet-clutch primaries. Using fluids specified for these roles helps maintain proper lubrication behavior and component interaction under load.

• 20W50 engine oil balanced for air/oil-cooled V-twin operation
• 75W90 gear oil rated GL-5 for heavy shock and hypoid gear protection
• Primary oil formulated to maintain clutch friction characteristics and protect chains and bearings

What comes with the kit to make installation easier?

Beyond the three fluid bottles, Motul supplies a premium filter with a removable hex nut for quicker removal and installation. The additional small parts and disposables help complete the job without extra trips to the store.

• Premium black oil filter with hex nut for faster wrench access
• Three O-rings sized for common replacement points
• Motul shop rag and disposal funnel to keep work areas clean
• Crankcase plaque for record keeping or stamping service details

Will this kit fit my motorcycle model and how much oil is provided?

The kit is tailored for Harley-Davidson Milwaukee-Eight engines and associated Big Twin transmissions and primaries that accept these fluid specifications. Fluid volumes are provided to cover typical drain and refill requirements, but always check your model's service manual for exact capacities and change intervals.

• Engine oil: 5 liters (5.28 qts) of Motul Twin 20W50
• Gear oil: 1 quart SAE 75W90 (API GL-5)
• Primary oil: 1 quart synthetic primary fluid

Who is this for? The Motul Twin Oil Change Kit is designed for owners, mechanics and touring riders who service Harley-Davidson Big Twin Milwaukee-Eight motorcycles and want a ready-made, brand-consistent set of engine, transmission and primary lubricants plus the essential filter and hardware. If you perform routine maintenance yourself or prepare bikes for long rides, this kit consolidates the right products into one convenient package. Always cross-check compatibility with your specific model year and follow factory torque and fill-volume specifications when servicing.