What do you get with the Monster Box? Your choice of Gear ratio, Your choice of a left or right hand drop output that is clock able from stock position to virtually flat. Also included is an universal shifters, heavy duty 32 spline front and rear outputs, Timken Bearings and 32 spline 1310 CV style Spicer yokes.
| THE NEW 2 AND 3 SPEED MINI TRANSFER CASES ARE ON THE WAY, WE ARE NOW TAKING ORDERS ON THE FIRST ONES. |
| This is the 3 speed NEW MONSTER MINI 10% smaller than the "B" BOX |
This is the front of the 3 speed monster B BOX (empty case) bolted to a ZF 5 speed.
This is the rear or 3 speed monster B BOX (empty case)
MINI Monster Box 3 Speed Transfer Case
$2399.00
What’s included in our price:
- Passenger or Drivers side front output
- Your choice of available gear ratio
- 32 spline heavy duty output shafts
- Your choice of available yokes
- Universal shifter.
Options:
- TJ Specific shifters
- Driveshaft flanges
- Parking brake
- Vehicle speed sensor
- Polished aluminum shifter knobs
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Shopping Cart |
Part Number | PART |
Price |
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22-30110 | STAK MINI MONSTER BOX 2 SPEED TRANSFER CASE | $1999 |
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22-30210 | STAK MONSTER BOX A OR B-BOX 2 SPEED TRANSFER CASE | $2199 |
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22-30120 | STAK MINI MONSTER BOX 3 SPEED TRANSFER CASE | $2399 |
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22-30220 | STAK MONSTER BOX A OR B-BOX 3 SPEED TRANSFER CASE | $2699 |
How the “Monster Box” is built
Housing
The Monster Box Transfer Case housing is manufactured from cast 356 alloy aluminum and hardened to a T6 condition. We fully CNC machine the entire profile and bearing locations ensuring all tight tolerances are maintained. Our Housing utilizes an extremely thick wall to guarantee that case deflection under heavy acceleration is not an issue.
Gears
The gears of the Monster Box are manufactured from ASTM Alloy 8620 and heat treated to Rockwell “C” 58-60. Our gears are helical cut and very robust in comparison to other factory and aftermarket transfer cases. We DO NOT utilize Synchronizers in our transfer case.
Gear Selection
We offer multiple gear ratios for the Monster Box Transfer Case. The 3-speed transfer case gear options are as follows:
- 5.22:1, 2.97:1, and 1:1
- 4.29:1, 2.44:1, and 1:1
- 3.78:1, 2.15:1, and 1:1
Shafts
Like our gears, the shafts of the Monster Box are manufactured from ASTM Alloy 8620 and heat treated to Rockwell “C” 58-60. We produce our output shafts in the Heavy Duty 32 spline configuration. This allows you a wide range of yoke options to fit your individual needs.
Yokes and Flanges
Because we use 32 splines on our output shafts, a large number of yoke and flange options are available to the consumer. We offer the following:
- 1310 Non-CV
- 1310 CV
- 1350 Non-CV
- 1410 Non CV
- 1350 CV Flange
Our shafts will also accommodate most 32 spline yokes and flanges from the aftermarket 4x4 industry.
Bearings
We use only the highest quality bearings available. Our transfer case employs tapered roller bearings on ALL of the shafts, as well as caged needle bearings on all internal gear to shaft transitions. We also use radial thrust bearings between all of the gears and shafts as well.
Fasteners
We use in excess of 30 3/8-16 Stainless Steel Socket Head Cap Screws in our assembly to guarantee a long and durable life.
Clocking
Our Transfer Case is clockable in 4 degree increments up to 360 degrees. This allows the consumer to “fine tune” the installation for their particular needs.
Speedometer Plug Information
Front B Box Dimensions
Top B Box Dimensions
| GEARING COMPARISON FOR DIFFERENT TRANSFER CASES | |||||||||
| Model | Trans | First Gear | Low Gear 1 | Low Gear 2 | Low Gear 3 | Axles | Final 1 | Final 2 | Final 3 |
| STaK 4X4 3 Speed | NV3550 | 4.00 | 5.44 | 3.05 | NA | 4.56 | 99.22 | 55.63 | NA |
| Atlas 4 Speed | NV3550 | 4.00 | 2.72 | 3.80 | 10.33 | 4.56 | 69.31 | 49.25 | 188.42 |
| Atlas II 6.0 | NV3550 | 4.00 | 6.00 | NA | NA | 4.56 | 109.44 | NA | NA |
| Atlas II 5.08 | NV3550 | 4.00 | 5.08 | NA | NA | 4.56 | 92.71 | NA | NA |
| Atlas II 4.3 | NV3550 | 4.00 | 4.30 | NA | NA | 4.56 | 78.43 | NA | NA |
| Atlas II 3.0 | NV3550 | 4.00 | 3.00 | NA | NA | 4.56 | 54.72 | NA | NA |
| Dana 300 | NV3550 | 4.00 | 2.63 | NA | NA | 4.56 | 47.97 | NA | NA |
| Jeep Dana 20 | NV3550 | 4.00 | 2.00 | NA | NA | 4.56 | 36.48 | NA | NA |
| Bronco Dana 20 | NV3550 | 4.00 | 2.46 | NA | NA | 4.56 | 44.87 | NA | NA |
| Jeep NP231 | NV3550 | 4.00 | 2.72 | NA | NA | 4.56 | 49.61 | NA | NA |
| LENGTH COMPARISON FOR | ||
| DIFFERENT TRANSFER CASES | ||
| Model | Length | Weight |
| STaK 4X4 3 Speed | 13.0" | 153 |
| Atlas II 5.08 | 13.8" | 110 |
| NP 203 | 21.5" | 165 |
| NP 205 | 13.0" | 138 |
| Dana 300 | 11.5" | 86 |
| Jeep Dana 20 | 10.5" | 80 |
| NP231 | 20+" | 67 |
Shifters
We offer two different shifter configurations. The first is our “Universal Shifter”. It consists of either two or three levers, horizontal to the front of the transfer case. The consumer may pivot, shorten, and modify as necessary to fit their individual application. The second option is our “TJ” Style shifter. This shifter is designed to fit through the factory hole in a Jeep TJ. Because of the innumerable variables in vehicles such as transmissions, long arm suspension systems, flat skid plates, Etc., slight modification to your floor or console may be necessary.
Parking Brake
A rear output parking brake is available as an option on all of our transfer cases. This kit includes the rotor, caliper, mounting brackets, rear mounting flange, and all necessary mounting hardware. You will need to supply a handle and cable to complete the installation. Some driveline modifications may be necessary. This kit can be retrofitted after the time of purchase as well.
Vehicle Speed Sensor
Our VSS is a factory Jeep Rubicon sending unit. It is a direct plug in to 2003-2006 Jeep Wranglers and is easily adapted to the 1997-2002 Wranglers. If your application utilizes a mechanical drive speedometer, then you will need to replace your factory speedometer with an aftermarket unit like the ones from Auto Meter or Dakota Digital. Our VSS sends three pulses per revolution of the rear output shaft. If you need a different signal or pulse count, there are several aftermarket “signal converters” available.
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Shopping Cart |
Part Number | PART |
Price |
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22-30310 | PARKING BRAKE | $309.99 |
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TRANSFER CASE MOUNT | $54.99 |
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1310 CV YOKE 30* | $49.00 |
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1310 NON CV YOKE 30* | $49.99 |
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1350 NON CV YOKE 20* | $49.99 |
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1410 NON CV YOKE 37* | $49.99 |
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