MaxHiflo V-Twin Complete 6-Quart Oil Change Kit — 20W-50 Full Synthetic, Chrome HiFloFiltro

The MaxHiflo VTTOCK15 is a complete 6-quart oil change kit built for Harley-Davidson Twin Cam motorcycles, combining a 20W-50 ester-based full synthetic engine oil, dedicated primary and transmission fluids, and a premium chrome HiFloFiltro oil filter.

This kit brings together purpose-formulated lubricants and a high-quality filter so you can service engine, primary and transmission systems in one go. The engine oil uses surface-active ester technology and shear-resistant polymers for stable viscosity and protection under heat and load, while the included transmission and primary fluids are mineral-based formulas tuned for gear protection and smooth shifting. A chrome HiFloFiltro filter finishes the package with longer service life and easy installation features.

How does the engine oil protect Twin Cam engines?

The MaxHiflo V-Twin 20W-50 full synthetic oil is engineered to reduce operating temperatures and minimize wear using ester-based chemistry. It builds a durable lubricating film and resists thermal breakdown so viscosity stays consistent in demanding conditions.

• Ester-rich formula for enhanced film strength and lower metal-on-metal wear
• Regenerative polymers to resist mechanical shearing and preserve viscosity
• Ultra-clean additive package to guard against sludge and deposits
• Designed for multi-compartment use in V-Twin engine, primary, and transmission setups

What benefits do the transmission and primary fluids provide?

Both the heavy-duty transmission and the primary fluid are mineral-based lubricants formulated to protect gears and ensure smooth shifts under load. They include extreme pressure additives and surface-active chemistry to handle shock loads common to V-Twin drivetrains.

• 85W-140 transmission oil designed for 4-, 5- and 6-speed gearboxes
• Primary fluid formulated for wet diaphragm spring clutches on 1984+ H-D models
• Detergent systems reduce deposits and extend component life
• High film strength resists viscosity loss during high RPM and heavy-load use

Why include a chrome HiFloFiltro oil filter with the kit?

The HiFloFiltro HF171CRC chrome filter included with the kit is built from premium materials and tested for longer service life than many OEM and aftermarket options. It also features a 17mm cross-drilled nut for faster removal and the option to safety-wire the filter in place.

• Proven longer service life versus OE and competitor filters
• 17mm cross-drilled nut for quick installation and secure removal
• Chrome finish resists corrosion and matches many motorcycle aesthetics
• Designed to capture contaminants that accelerate wear

Who this kit is best for: riders or home mechanics who own 2000–2015 Harley-Davidson Twin Cam models and want a single, carefully matched set of lubricants and a premium filter to complete a full engine, primary, and transmission service. It’s ideal for those who prefer a high-performance synthetic engine oil for temperature control and wear reduction, coupled with proven mineral gear fluids for transmission and primary protection. If you perform regular maintenance, track long-term component health, or simply want a dependable all-in-one service solution, this kit simplifies the process and ensures each compartment receives a fluid formulated for its specific demands.