Towball Mount STD 332MM (PRO7010)

Towball Mount STD 332MM (PRO7010) is a rugged, standard-length tow hitch ball mount built to deliver dependable, safe towing across a broad range of vehicle heights and trailer configurations. Designed for heavy-duty applications, this STD 332MM family offers multiple capacity and fit configurations, enabling you to pair it precisely with your vehicle and trailer for long-haul reliability.

Why the STD 332MM stands out

Across the lineup, you’ll find a thoughtful combination of drop measurements, tow ball sizes, and shank lengths that cover caravans, trailers, boats, and demanding towing tasks. This isn’t a one-size-fits-all mount—it's a purpose-built solution that helps you achieve the correct hitch height, secure ball engagement, and smooth towing performance, mile after mile.

• Heavy-duty capacity options up to 3600 kg, with variants tailored for your equipment and load.
• Varied drops to achieve level towing on a wide range of vehicles—from compact cars to larger SUVs and trucks—eliminating neck strain and reducing sway on long hauls.
• Ball sizes available in 1" and 7/8" to match common hitch setups, ensuring a precise fit with your current trailer or caravan.
• Flexible shank lengths (TBM) and pin-to-rear distances to align with your vehicle’s hitch receiver spacing and geometry.
• Dedicated, stable engagement for safer launches and cleaner cornering, even when towing challenging loads.

Official variants at a glance

Choose the variant that matches your tow height, ball size, and hitch geometry. Here are the core specs to help you pick the right match for caravans, trailers, boats, or demanding towing tasks:

• T40381 — Capacity: 3600 kg, Drop: 76 mm, Ball to Pin Length: 250 mm, Tow Ball Shank Dia: 1", TBM Shank Length: 180 mm, Pin to Rear: 66 mm
• T40382 — Capacity: 3600 kg, Drop: 125 mm, Ball to Pin Length: 270 mm, Tow Ball Shank Dia: 1", TBM Shank Length: 180 mm, Pin to Rear: 66 mm
• Hayman Reese 21171 — Capacity: 2500 kg, Drop: 98 mm, Ball to Pin Length: 332 mm, Tow Ball Shank Dia: 7/8", TBM Shank Length: 305 mm, Pin to Rear: 83 mm
• Hayman Reese 21177 — Capacity: 3500 kg, Drop: 98 mm, Ball to Pin Length: 227 mm, Tow Ball Shank Dia: 7/8", TBM Shank Length: 200 mm, Pin to Rear: 83 mm
• Hayman Reese 21196 — Capacity: 3500 kg, Drop: 98 mm, Ball to Pin Length: 193 mm, Tow Ball Shank Dia: 7/8", TBM Shank Length: 166 mm, Pin to Rear: 83 mm
• Hayman Reese 21168 — Capacity: 2500 kg, Drop: 160 mm, Ball to Pin Length: 217 mm, Tow Ball Shank Dia: 7/8", TBM Shank Length: 200 mm, Pin to Rear: 83 mm
• Hayman Reese 21161 — Capacity: 3500 kg, Drop: 82 mm, Ball to Pin Length: 212 mm, Tow Ball Shank Dia: 7/8", TBM Shank Length: 195 mm, Pin to Rear: 83 mm
• Hayman Reese 21163 — Capacity: 3500 kg, Drop: 82 mm, Ball to Pin Length: 237 mm, Tow Ball Shank Dia: 7/8", TBM Shank Length: 220 mm, Pin to Rear: 83 mm
• Hayman Reese 21126 — Capacity: 3500 kg, Drop: 98 mm, Ball to Pin Length: 157 mm, Tow Ball Shank Dia: 7/8", TBM Shank Length: 114 mm, Pin to Rear: 57 mm

Who this is for

If you frequently tow heavy trailers, caravans, or boat trailers, the STD 332MM family provides precise height matching and secure ball engagement. Select a variant based on:

• Tow height alignment: choose a drop that brings your trailer to the correct hitch height for a level, smooth tow.
• Ball compatibility: decide between 1" and 7/8" tow balls to fit your existing hitch setup.
• Required reach: TBM shank length and pin-to-rear distance tailor the mount to your vehicle’s hitch receiver spacing and geometry.

Why proper matching matters in real-world towing

A correctly matched towball mount reduces trailer sway, improves stability during cornering, and minimizes the risk of misalignment on long trips. With the STD 332MM, you’re investing in a robust, heavy-duty mounting solution designed to endure daily use in demanding towing scenarios.

Practical guidance for selecting and using your STD 332MM

• Measure your vehicle’s hitch height and the trailer’s hitch height before selecting a variant. The goal is to achieve a level tow for optimal stability.
• Identify your current tow ball size and confirm whether you need a 1" or 7/8" shank to ensure secure engagement with your trailer coupler.
• Match TBM shank length to your hitch receiver depth and the distance from the ball to the rear of the mount to align with your vehicle’s geometry.
• Confirm the load rating aligns with your trailer’s gross trailer weight (GTW) and caravan/boat trailer requirements to maintain safety margins on long hauls.
• Regularly inspect the mount for wear, corrosion, and loose hardware; torque specifications should follow the manufacturer’s guidance.

With the Towball Mount STD 332MM (PRO7010), you’re choosing a purpose-built, heavy-duty solution that keeps your towing setup precise, secure, and ready for whatever the road throws at you. Whether you’re daily-dragging a full caravan or coastal-boat runs, this family gives you the reliable foundation to tow with confidence.