At DMG Motorsports, we present the Klotz Premium Complete Synthetic Oil Service Kit 4QT — a complete, one-box solution for servicing your Harley-Davidson V-Twin's engine, primary case, and transmission all at once. This kit takes the guesswork out of maintenance day by bundling every fluid and part you need in the exact quantities required, so you spend less time shopping for lubricants and more time riding. Klotz has been trusted by riders and racers for high-performance lubrication since 1959, and this premium synthetic formulation is engineered specifically for the demands of American V-Twin hardware.

The included Klotz Multi-Viscosity Synthetic Engine Lubricant 20W-50 (KH-2050) is a premium synthetic oil designed for Harley-Davidson V-Twin engines that maintains its grade under stress, reducing friction and engine temperature while providing excellent protection against rust and corrosion, and ensures optimal performance and longevity. The engine oil is complemented by a Primary Case Lubricant and Transmission Lubricant engineered to keep clutch and gearbox operation smooth, plus a Hiflofiltro oil filter and a set of Cometic drain plug O-rings for a proper, leak-free service. Together, these Klotz oil change kits are formulated with synthetic engine lubricant, one chrome oil filter, drain plug O-rings, and gear and chain case lubricant for Sportsters or transmission and primary lubricants for other models.

Under the hood, Klotz's change kits are designed to prevent wear and corrosion for both the engine and gear hardware with just the right amount of lubricant, using a top-tier additive package that utilizes high-quality base oils and advanced polymers to maintain shear stability and optimize both power and efficiency, while detergents and dispersants keep the engine clean and mitigate deposit formation. The formulation also relies on extreme pressure anti-wear chemistry and multifunctional friction modifiers to reduce oil temperatures, along with advanced polymers to improve piston ring sealing and optimize power and efficiency even during extended high-temperature operation — ideal for air-cooled Harley engines that run hot on the highway. Note that this kit ships with fluids, filter, and O-rings only; it does not include gaskets or seals, so riders reusing stock components (or upgrading to a Cometic primary gasket kit) will be fully prepared for a clean, complete service.

Features:

• 4 Quarts of Klotz Multi-Viscosity Synthetic Engine Lubricant 20W-50 (KH-2050) for outstanding oxidation resistance and wear protection
• 1.5 Quarts of Klotz Primary Case Lubricant (KH-C80) for smooth clutch and primary drive operation
• 1 Quart of Klotz Transmission Lubricant (KH-GL90) formulated to guard against wear, oxidation, and corrosion
• 1 Hiflofiltro oil filter included for complete filtration coverage
• 3 Cometic drain plug O-rings for a proper, leak-free reseal
• Advanced polymer and additive technology maintains shear stability and reduces operating temperatures
• Detergents and dispersants help keep the engine clean and minimize deposit buildup
• Complete all-in-one kit engineered specifically for Harley-Davidson V-Twin engines
• Multiple SKU variants available to match your specific Harley-Davidson model and year