SKU:GHM-1016-A5
Type:50mm Ball
Capacity:4500kg
Availability: OK
$3,465.84incl GST
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The Boss Torsion-Flex Hitch - 180-370kg Tongue Weight - 4500kg - 10" Drop/Raise
The BOSS Torsion-Flex is the innovative fusion of the MEGA-DUTY drop hitch and TORSION-FLEX technology. The BOSS can apply to customers anywhere from construction contractors and municipality fleets, to anyone that needs to hook up to multiple trailers. In addition to being heavy-duty, fully adjustable, and versatile, the BOSS also contains rubber torsion arms.
- 2″ Shank
- Drop/Raise Range: up to 10" - 6 holes
- 4500kg maximum weight
- 500kg maximum tongue weight
- 5 Hitch Options
- 50mm Ball
- AU Tongue
- AU Tongue with 2 5/16 Ball
- AU Tongue with Convert-a-Ball - 50mm & 1 7/8" Ball
- Versa Ball - 50mm and 70mm Ball
- Designed for 1.5″ or smaller lunette rings
- Fabricated with Heavy-Duty Steel
- Made in the USA
- Heavy-Duty Rubber Torsion-Flex Cords
- Tongue Weight Scale
- Coated with a Durable Silver-Vein Powder Coat
- Engineered using SOLIDWORKS software
Toyota Hilux - please check the pin to the end of the receiver (where the towball mount goes in) Some Hilux models have a long receiver and do not fit. Pin to end of the mount on these is 100mm.
SKU:GHM-1016-AT
Type:Australian Tongue
Capacity:4500kg
Availability: OK
$3,465.84incl GST
SKU:GHM-1016-AT-25
Type:Australian Tongue + 2 5/16" Ball
Capacity:4500kg
Availability: OK
$3,549.58incl GST
SKU:GHM-1016-AT-DUO
Type:Australian Tongue + Duo Ball (50mm + 1 7/8")
Capacity:3500kg
Availability: OK
$3,633.65incl GST
SKU:GHM-1016-A57
Type:Versa-ball 50mm/70mm
Capacity:4500kg
Availability: OK
$3,465.84incl GST
SKU:GHM-1016-A57P
Type:Versa-ball 50mm/70mm + Pintle Lock
Capacity:4500kg
Availability: OK
$3,580.84incl GST
Contact us about this product
Contact us about this product
Have a question about one of our products or need help with your order? We're here to help. Contact our team on or send us a message using the contact form below, and we'll get back to you as soon as possible.
Delivery and Shipping
Delivery and Shipping
Orders are dispatched once payment has been confirmed. For courier deliveries, orders placed before the 1:30pm weekday cut-off are typically processed for the next available dispatch.
Delivery timeframes:
- Standard NZ courier: Dispatched the next working day after payment confirmation.
- Rural deliveries: Allow up to 5 working days.
- Large or bulky orders: Sent via bulk freight and may take 5-10 working days.
- International Airmail: Typically 3-14 days, with a maximum parcel weight of 20kg.
- International Courier: Available at an additional cost, with tracking included and a delivery target of 2-6 days. Maximum parcel weight is 30kg.
We accept returns of unused items in their original packaging within 14 days of purchase. Please contact us first to obtain a return authorisation before sending any items back.
Once your return is received and approved, a refund or store credit will be issued.
Please note:
- Special-order or imported items may not be eligible for return. In some cases, returns may be considered if the customer covers any associated freight costs.
- Refunds for credit card and PayPal purchases are subject to a 3% non-refundable transaction fee.
- Most returns incur a 10% restocking fee, capped at $25.
- Original shipping costs are non-refundable.
- Electrical items that have been used, damaged, or returned without their original packaging cannot be returned.
- Boat rollers and certain products supplied from the Rubbermark warehouse are subject to a 15% restocking fee.
For full details, please see our complete Delivery & Shipping Policy
Return Policy
Return Policy
We accept returns of unused items in their original packaging within 14 days of purchase. Please contact us first to obtain a return authorisation before sending any items back.
Request a return here.
Once your return is received and approved, a refund or store credit will be issued.
Please note:
- Special-order or imported items may not be eligible for return. In some cases, returns may be considered if the customer covers any associated freight costs.
- Refunds for credit card and PayPal purchases are subject to a 3% non-refundable transaction fee.
- Most returns incur a 10% restocking fee, capped at $25.
- Original shipping costs are non-refundable.
- Electrical items that have been used, damaged, or returned without their original packaging cannot be returned.
- Boat rollers and certain products supplied from the Rubbermark warehouse are subject to a 15% restocking fee.
For full details, please see our complete Returns Policy:
The Boss Torsion-Flex Hitch - 180-370kg Tongue Weight - 4500kg - 10...
Regular priceFrom
$3,465.84
Unit price
Regular price
$3,465.84
Unit price
incl GST
-
Drop
-
Shank Receiver Size
Identify the Drop/Rise you need.
Identify the Weight Capacity
Receiver Length (Vehicle)
Shank Length (Mount)
How to Identify the Drop or Rise required so you can tow flat.
To choose the correct drop or rise for your hitch mount please follow the below steps and refer to the diagram and video.
- On level ground, measure the distance from the ground to the top inside of the Hitch Receiver (A - refer diagram)
- Level your trailer using your jockey wheel to adjust the height.
- Measure the distance from the ground to the underside of the Trailer Coupling (B)
- A-B = Drop or Rise required (C). If it is a negative number then you will require a rise
Identify the Weight Capacity required.
- There are 3 key weights
- Gross Trailer Weight (GTW) - Total weight of your loaded trailer.
- Tongue Weight (TW) - weight applied on the tongue or coupling point. You can measure this with a Tow Ball Weight Scale.
- Vehicles Tow Rating - what is the maximum weight the vehicle can tow based on the manufacturers' specifications
- The Hitch Mount and Towball combination you select must meet or exceed the GTW.
- We have paired the Hitch Mounts with the correct Towballs in each of the product listings
Receiver Size
In almost all cases the receiver will be around 51mm / 2" square. In some cases usually with imported US vehicles the receiver maybe 2.5" or sometimes 3" square. We do sell a reducer for 2.5" to 2" HERE.
Sometimes there will be some movement as there will be a few millimetres in difference - we recommend using Anti Rattle Shims to sort if it is an issue.
Receiver Length
There are 2 measurements you need to check on the vehicle receiver as follows:
- Measurement A - Pin to End of receiver. Measure from the centre of the lock pin hole to the end of the receiver (where you insert the towball mount)
- Measurement B - Pin to the rear of the receiver. Measure from the centre of the lock pin hole as far into the receiver as you can go.
When choosing a towball mount (most of our mounts have dimensions on the listing) the mount needs to have an A measurement longer than the vehicle receiver and a B measurement shorter than the vehicle receiver to fit.
Lock Pin Size
Lock pins are 16mm standard size.
Other Helpful Information.
Towball Shank Diameter:
- Each Hitch Mount will have a Towball Shank Diameter, this is the diameter of the shank of the towball that goes through the Hitch Mount.
- There are 3 sizes
- 3/4" (19mm)
- 7/8" (22mm) - Most common
- 1" (25mm)
Hitch Shank Size:
- The shank of the Hitch Mount fits into the Hitch Receiver on your tow vehicle
- Most NZ Hitch Mount Shank sizes are 50mm x 50mm
Payment & Security
Payment methods
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