Zero Torsion Sub-Frames & Components

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All sub-frames come with side brackets, center pivoting crossmembers, and hardware.

*Sets of side brackets and individual pivoting crossmembers can be purchased separately.

3-point Zero Torsion sub-frame

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A 3-point subframe consists of two side pivot brackets, normally mounted towards the front) and one crossmember pivot, normally mounted in the rear. The support frame weldment, which is bead blasted, hot dip galvanized, then twice powder coated for maximum corrosion resistance, with stainless steel hardware, are also included. A 3 / 4-point subframe has the same set up as the 3-point, but includes a extra crossmember pivot, doubling up crossmember pivots on the rear of the weldment frame.

3-point Zero Torsion sub-frame

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8' 3-point - fits 8' rectangle or 10' DA $9956

10' 3-point - fits 10' rectangle or 12' DA $10,389

12' 3-point - fits 12' rectangle or 14' DA $10,669

14' 3 point - fits 14' rectangle or 16' DA $11,126

14' 3 / 4 pt. - fits a 14' rectangle or 16' DA $12,426

NOTE: A set of subframe crossmember mounting gussets are now included with every subframe crossmember pivot.

NOTE: The 3 / 4-point hybrid subframe system is designed to accommodate large departure angle and rectangle habitats that designed for a pass through installation.

NOTE: A 3-point subframe is advantageous if you desire a cab to habitat pass through.

NOTE: All our subframes are compatible with all our Access Stairs systems.

Don't know what you need?

3-point or 4-point? Watch this

What do the pivots do?

Want to learn more? Watch this

4 & 5-point Zero Torsion sub-frame

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A 4-point subframe consists of two side pivot brackets, normally mounted in the middle) and two crossmember pivots, normally mounted in the front and rear. The support frame weldment, which is bead blasted, hot dip galvanized, then twice powder coated for maximum corrosion resistance, with stainless steel hardware, are also included. A 5-point subframe includes one extra crossmember pivot which is mounted in the rear next to the rear most crossmember pivot of the 4-point system.

4 & 5 -point Zero Torsion sub-frame

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8' 4-point - fits 8' rectangle or 10' DA $9656

8' 4-point "ISO" - fits 8' rect. or 10' DA $13,556*

10' 4-point - fits 10' rectangle or 12' DA $11,350

10' 4-point "ISO" - fits 10' rect. or 12' DA $14,390*

11' 4-point - fits 11' rectangle or 13' DA $11,523

12' 4-point - fits 12' rectangle or 14' DA $11,695

*also fits the 19' cabover w/DA

12' 4-point "ISO" - fits 12' rect. or 14' DA $15,275*

*also fits the 19' cabover w/DA

13' 4-point - fits 13' rectangle or 15' DA $11,912

14' 4-point - fits 14' rectangle or 16' DA $12,128

15' 4-point - fits 15' rectangle or 17' DA $12,329

16' 4-point - fits 16' rectangle or 18' DA $12,688

17' 4-point - fits 17'rectangle or 19' DA $13,620

17' 5-point - fits 17' rectangle or 19' DA $14,731

18' 4-point - fits 18' rectangle or 20' DA $14,132

18' 5-point - fits 18' rectangle or 20" DA $15,361

19' 5-point - fits 19' rectangle or 21' DA $15,746

20' 5-point - fits 20' rectangle or 22' DA $16,219

21' 5-point - fits 21' rectangle or 23' DA $16,668

22' 5-point - fits 22' rectangle or 24' DA $16,956

* ISO Subframes INCLUDE the ISO corner brackets. Click here.

NOTE: All our subframes are compatible with all our Access Stairs systems.

NOTE: A set of subframe crossmember mounting gussets are now included with every subframe crossmember pivot.

ALL NEW SUBFRAMES: our subframes now come with hot dipped zinc (galvanized) coated inside and out and double layers of gloss hammer-tone powder coating. Hang your storage boxes from the subframes, no problem!

ISO System Promo Video

See more ISO videos HERE

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4-point Zero Torsion ISO sub-frame

Crossmember Pivot Gusset (pair)

Side mount gusset sets are included for every crossmember pivot

Pivots - Zero Torsion ISO sub-frame

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In conjunction with the ISO habitat corner mounts...

NOTE: You can attach camper jacks to the mounts and lift your habitat off at your basecamp to roam unencumbered by height and weight. Brackets are made for both rectangle and departure angle habitats.

NOTE: The ISO sub-frame, named after the shipping container corner locking mechanisms (ISO 1161), turns your Overland Expedition camper into a daily driver with a Zero Torsion flatbed.

NOTE: A 4-point subframe is advantageous for additional support point loading, and is required for sub-frame length greater than 14'.

Zero Torsion Subframe in Action

Zero Torsion Pivots - Sold Separately

Pair of Side Pivot Brackets: $1388
One Crossmember Pivot: $1879
Heim Joint Set: $920

*NOTE: A set of subframe crossmember mounting gussets are now included with every subframe crossmember pivot.

See the Zero Torsion sub-frame in action, keeping this habitat torsion free in an extreme environment... on an Overland Driving course.

SHIPPING: All our products are offered as "will call" FOB Portland, OR. -but we can help you find a shipper that can give you quotes.
"Will-Call" means the products are intended to be picked up at our location and may not be packaged completely that will avoid damage by rough handling during shipment. This is why we strongly recommend that if you are having the products shipped, that you request a dedicated shipping service, on a deck-over or flatbed trailer, and that the load will be tarped. A "dedicated shipping service" means the truck picks up at our location, and drops off at your location. Do not accept a local pick up to a distribution center for transport. If only ordering subframe pivots, those will be shipped after being wrapped and normally have not problems in transits.