MaxHiflo V-Twin 6-Quart Complete Oil Change Kit for Twin Cam Harley — 20W-50 Full Synthetic, HF171BRC Filter

MaxHiflo VTTOCK14 is a complete 6-quart oil change kit built for Twin Cam Harley-Davidson motorcycles, combining ester-based full synthetic engine oil, dedicated primary and transmission fluids, plus a premium Hiflofiltro oil filter.

This all-in-one maintenance kit supplies the oils and filter needed for a full service on 2000–2015 Twin Cam Harley models, including Electra Glide, Street Glide, Road King, Softail and Dyna families. The kit bundles four quarts of Maxima V-Twin Full Synthetic 20W-50 engine oil, a quart of Maxima V-Twin primary fluid, a quart of Maxima 85W-140 transmission oil, and a Black HiFloFiltro HF171BRC premium spin-on filter. Each lubricant is formulated to withstand the heat, shear and loads common to air/oil-cooled V-twin powerplants and their gearboxes.

What makes the engine oil in this kit suited for Twin Cam Harleys?

The engine oil is an ester-based full synthetic designed specifically for multi-compartment V-Twin service. It emphasizes thermal stability, film strength and clean operation without compromising clutch performance in wet-clutch systems.

• 20W-50 viscosity tuned for air/oil-cooled V-Twin engines under load.
• Surface-active ester chemistry reduces operating temperatures and friction.
• Regenerative polymers resist mechanical shear and retain viscosity in hot climates.
• Ultra-clean additive package helps prevent sludge and deposits.

How do the primary and transmission fluids protect drivetrain components?

The kit includes two mineral-based gear fluids: a high-film-strength transmission oil and a dedicated primary chaincase fluid. Both contain extreme-pressure and surface-active additives to guard gears and improve shifting under heavy loads.

• 85W-140 transmission oil offers robust protection for 4-, 5- and 6-speed gearboxes.
• Primary fluid formulated for wet-diaphragm-clutch applications on post-1984 models.
• Extreme pressure chemistry cushions shock loads and helps prevent gear wear.
• Detergents and clean additives reduce deposit formation for trouble-free operation.

Why include a Hiflofiltro HF171BRC filter, and what advantages does it bring?

The kit’s Black HiFloFiltro HF171BRC premium filter is engineered for longer life and easier service compared with many OE and aftermarket options. It supports the oils’ protective properties by maintaining filtration efficiency under real-world conditions.

• Tested to deliver roughly 28% longer service life versus some OE and competitor filters.
• Comes with a 17mm cross-drilled nut for faster removal, installation, and lock-wiring.
• High-quality media reduces contaminant circulation and helps extend oil life.

Which Twin Cam models and years is this kit compatible with?

This kit is packaged to cover a wide range of Harley-Davidson Twins from the Twin Cam era. It fits both touring and softail chassis and is appropriate for owners performing full oil-and-filter services.

• Compatible with Harley Davidson Twin Cam models: Electra Glide/Ultra, Street Glide, Road King, Softail, Dyna (FLH/FLT/FXD/FXST/FLST).
• Recommended for model years 2000 through 2015, covering common service intervals.
• Good choice for riders doing DIY maintenance or workshop technicians stocking a ready kit.

Who is this for: The MaxHiflo VTTOCK14 kit is aimed at Twin Cam Harley owners and motorcycle technicians who want a complete, shop-ready oil change solution. It's especially useful for riders who prefer ester-based full synth engine oil for temperature control and film strength, combined with high-quality mineral gear fluids and a durable premium filter. If you service any of the listed 2000–2015 Harley models and want matched lubricants and filtration in one purchase, this kit simplifies parts sourcing and ensures you use compatible products engineered for V-Twin operation.