MaxHiflo Engine Oil Change Kit for Harley-Davidson Twin Cam VTTOCK14 — 6 qt Full-Synthetic 20W-50 & HiFloFiltro

Complete tailored oil change kit for Harley-Davidson Twin Cam engines: includes 4 qt full-synthetic 20W-50 engine oil, 1 qt primary fluid, 1 qt 85W-140 transmission oil, and a premium HiFloFiltro oil filter.

This MaxHiflo VTTOCK14 kit gathers the fluids and filter you need to service Harley-Davidson Twin Cam motorcycles (model years 2000–2015), streamlining maintenance with components matched to multi-compartment V-Twin systems. The set pairs an ester-based full synthetic engine oil that emphasizes temperature control and film strength with mineral-based transmission and primary oils formulated for high-load gearboxes and wet-clutch primaries. A high-quality HiFloFiltro HF171BRC oil filter is included for improved particle capture and easier service.

How does the full-synthetic engine oil protect a V-Twin under heavy use?

The Maxima V-Twin Full Synthetic is ester-based and formulated to maintain protective film strength even under high heat and mechanical stress, helping reduce wear and lower operating temperatures. Its regenerative polymer system resists shear and preserves viscosity in demanding riding conditions.

• 20W-50 viscosity for classic air-cooled Twin Cam tolerances
• Surface-active ester chemistry to improve temperature control
• Polymer system that resists shearing and viscosity loss
• Ultra-clean additive package to help prevent sludge and deposits

Will the transmission and primary oils support smooth shifting and clutch performance?

The kit includes Maxima V-Twin 85W-140 transmission oil and a mineral-based primary fluid, both formulated with extreme-pressure additives and surface-active agents to protect gears and enable consistent shifting under load. The primary fluid is suited for wet diaphragm spring clutches common to 1984 and newer H-D models.

• 85W-140 gear oil for high-film-strength protection in 4–6 speed gearboxes
• Primary oil designed for wet-clutch chaincases and high-performance use
• Detergent and EP chemistries reduce wear and protect against shock loads
• Robust formulas resist heat breakdown and mechanical shearing

What makes the included HiFloFiltro HF171BRC oil filter better than OEM options?

HiFloFiltro RC oil filters in this kit are manufactured to strict quality standards and deliver longer service life than many OE and aftermarket options. The HF171BRC model features a 17mm cross-drilled nut for simplified installation, removal, and the option to lock-wire the filter for race or long-ride security.

• Tested to provide approximately 28% longer service life versus OE/competitors
• 17mm cross-drilled nut for easier wrench access and lock wiring
• High-quality media for improved contaminant capture and protection

How do I know this kit fits my Harley-Davidson model?

This oil change kit is specified for Twin Cam-equipped Harley-Davidson motorcycles from 2000 through 2015, including Electra Glide/Ultra, Street Glide, Road King, Softail, and Dyna families. Confirm compatibility by checking your bike’s engine designation (Twin Cam) and service manual capacities before purchase.

• Fits Harley-Davidson Twin Cam engines: 2000–2015 model years
• Compatible with Electra Glide, Street Glide, Road King, Softail, Dyna variants
• Includes four quarts of engine oil plus two quarts of driveline fluids and filter

Who is this for? This MaxHiflo VTTOCK14 kit is designed for Harley owners and professional mechanics who want a single, trusted package for routine oil changes on Twin Cam motorcycles. It suits riders who prefer a full-synthetic engine lubricant for temperature and wear control alongside proven mineral-based transmission and primary fluids, plus those who value a premium long-life filter and easier serviceability. Always consult your owner’s manual for fluid capacities and service intervals before performing maintenance.