MaxHiflo VTTOCK12 Complete V-Twin Engine Oil Change Kit - Full

In this review the MaxHiflo VTTOCK12 Complete Engine Oil Change Kit is evaluated as a one-stop service pack for Harley Davidson twin cam riders who want a full synthetic, multi-compartment oil solution. The kit's biggest selling point is convenience: it supplies the specific oils and a premium HiFloFiltro HF171B filter needed for a 2000-2015 Twin Cam engine service, so an owner can perform a full engine, transmission and primary oil change without mixing brands or guessing grades.

Key Features

• Complete contents: The kit includes 4 quarts of Maxima V-Twin 20w50, 1 quart of V-Twin Primary, 1 quart of 85w140 transmission oil and a HiFloFiltro HF171B, so all three compartments are covered for a standard service.
• Full synthetic engine oil: Maxima V-Twin 20w50 is an ester based full synthetic formulated to lower operating temperatures and increase film strength for better wear protection in air-cooled V-Twins.
• Primary and transmission matched: The included primary and transmission fluids are mineral based formulations intended for high-performance gearboxes and chaincases, simplifying correct fluid selection.
• High-quality filter: The HiFloFiltro HF171B premium oil filter is built with materials that testing shows provide longer service life than OE and many competitors, reducing the risk of bypass during extended intervals.
• Compatibility: The kit is specified to fit Harley Davidson All Twin Cam motorcycles from 2000 to 2015, covering popular models like Electra Glide, Street Glide, Road King, Softail and Dyna.

Who It's For

The kit is aimed at DIY mechanics and independent shops servicing Harley Davidson Twin Cam models from 2000-2015 who prefer a full synthetic engine oil and want the convenience of matched primary and transmission fluids plus a premium filter in one purchase. Riders who perform their own maintenance will value having correct grades and a filter that claims extended life.

It is less appropriate for owners of non-Twin Cam engines or riders who require OEM-branded fluids for warranty reasons. Also, if a user needs single-bottle top-ups rather than a full kit, buying individual products may be more economical.

Pros & Cons

Pros

• Comprehensive kit covers engine, primary and transmission needs for a full service without sourcing separate parts.
• Engine oil is an ester based full synthetic designed to reduce temperatures and resist shear, offering long-term viscosity retention.
• HiFloFiltro HF171B claims improved life over OE filters, supporting cleaner operation between changes.

Cons

• Some customers have reported issues with leakage, so check packaging and seals on delivery before use.
• Primary and transmission fluids are mineral based rather than full synthetic, which may concern riders wanting synthetic in every compartment.

Specifications

Product type	Complete engine oil change kit for V-Twin
Engine oil	4 quarts Maxima V-Twin Full Synthetic 20w50
Primary oil	1 quart Maxima V-Twin Primary (mineral based)
Transmission oil	1 quart Maxima V-Twin 85w140 (mineral based)
Oil filter	Black HiFloFiltro HF171B premium oil filter
Compatibility	Fits Harley Davidson All Twin Cam 2000-2015 models

Our Verdict

The MaxHiflo VTTOCK12 kit is a practical, cost-effective choice for Twin Cam owners who want a trusted full synthetic engine oil paired with quality primary and transmission fluids and a premium filter. It is good value for DIY servicing and saves time sourcing parts, though buyers should inspect for possible leakage on arrival and note the primary and transmission oils are mineral based.

Frequently Asked Questions

Will this kit work for my 2012 Street Glide?
Yes, the kit lists compatibility with Twin Cam models from 2000-2015 and is suitable for a 2012 Street Glide when those compartments require these grades.

Does the engine oil cover all compartments?
The Maxima V-Twin Full Synthetic is formulated as a multi-compartment oil, but this kit includes separate mineral based primary and transmission fluids and a full synthetic engine oil for recommended use.

Are replacement filters available separately?
HiFloFiltro filters like the HF171B are sold separately if you need just the filter for future services.