Unverferth Zone-Builder Deep Ripper Model 122 5‑Shank


Like roots in a too-small container, your performance would be less than its best if you had to live and work each day in such cramped spaces. Yields suffer when compaction keeps roots from growing freely into the subsoil for optimum nutrient and water uptake. The Zone-Builder® subsoiler from Unverferth lets plants stretch their legs (and their roots) by opening passageways through the hardpan with minimal surface disruption. Long-term university research confirms deep-tilling with tools such as the Zone-Builder implement raise yields and income.

$49,000 ex. GST
$53,900 inc. GST

Tillage with a Purpose

Tillage needs can change. That’s why the Unverferth Zone-Builder® subsoiler is specifically designed to be customised to meet your individual changing soil conditions.

The Zone-Builder subsoiler models 132 and 122 handle the toughest soil conditions imaginable with ease. Each model is constructed with heavy-duty shank pull-arms, cast points and wearbars for extended durability and design enhancements for greater serviceability and user-friendliness.

Due to continuing improvements in the design and manufacture of Unverferth products, all specifications contained herein are subject to change without notice.

Compare Models

Auto Reset – Model 132


  • Model 132 4-Shank  
  • Model 132 7-Shank  
  • Model 132 8-Shank  

  • Model 132 4-Shank  $39,600
  • Model 132 7-Shank  $57,200
  • Model 132 8-Shank  $64,900

Heavy Duty Spring Reset – Model 122


  • Model 122 5-Shank  
  • Model 122 6-Shank  
  • Model 122 6-Shank + Roller  

  • Model 122 5-Shank  $53,900
  • Model 122 6-Shank  $61,600
  • Model 122 6-Shank + Roller  $72,600

*Optional Caddy or Roller Basket sold separately

Unverferth Zone-Builder Subsoiler

Walk Around Video

Check out this walk around video of the Unverferth Zone Builder subsoiler deep tillage in line ripper. You'll be able to move around the product like you're visiting a farm show and learn about all of the great features and benefits!

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Straight-leg shank design

Straight-leg shank design creates a passageway that allows plant roots, soil moisture and nutrients to move freely into the subsoil with minimal surface soil disturbance.

Slices up to 20″ deep to alleviate the deepest compaction.

3/4" thick high-stress,forged-alloy shanks

3/4″ thick high-stress,forged-alloy shanks provide maximum strength and minimal disturbance.

Heat-treated, austempered 1-3/4" wide replaceable points

Heat-treated, austempered 1-3/4″ wide replaceable points dig through the hardpan.

Points feature raised-center, tapered design for less soil disturbance at higher speeds.

Hourglass-shaped, heat-treated cast invertible wearbars

Hourglass-shaped, heat-treated cast invertible wearbars add to shank durability and subsurface soil fracturing.

Heavy-duty, double-frame all-welded construction

Heavy-duty, double-frame all-welded construction with 6″x6″ rearbar and 38″ underframe clearance provides ideal residue flow.

Adjustable stabiliser wheels

Standard tool-free adjustable stabiliser wheels with stubble-resistant tires assure a consistent working depth.

*Stabiliser wheels can be mounted on the ends of the mainframe (outboard) or onto the rear mainframe between the shanks (inboard).

20" Front-mounted swivel coulters

Front-mounted swivel coulters with 1,500 lbs. of downpressure easily cut through the heaviest residue and features heavy-duty 6-bolt hubs with recessed endcaps and ride on a lip for increased durability.

Shank Protectors Standard

1/4-inch thick, bolt-on shank protectors for use in abrasive soils.

7" Shatter Wings (Optional)

Shatter wings can be mounted at either of two locations for increased soil and hardpan fracturing. Wing slope can be set from 0 degrees to 14 degrees.

Zone Builder Caddy (Optional)

Put all your horsepower to work! Big-tractor horsepower doesn’t do you any good if it can’t be used for all your tillage needs. The Unverferth® Implement Caddy features easy, hookup to virtually all 3-point equipment, including the Zone-Builder® deep rippers, and their mounted tillage attachments.

Harrow Basket Kit (Optional)

  • Chops and evenly distributes residue for faster soil warm-up and more even emergence.
  • Complete self-contained unit across the entire width of the Zone-Builder deep ripper.
  • Field-proven angled, scalloped blades are designed specifically for aggressive residue cutting and chopping action.
  • Spring-adjusted downpressure ensures level, consistent operation to follow the ground contour.

Talk to us to discuss including a rolling harrow basket kit with your deep ripper.



Heavy Duty Spring Reset w/ Shear Bolt

20" Coulter Blades

13' 10" (stabiliser wheels outboard)

4098 kg

150-250 hp

User Manuals & Downloads

Download the latest operational manuals and documents for this machine.


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