Super Tune Kit (STK) for Gauntlet 1 and 2

Gauntlet STK
(2 customer reviews)
Sale!

Gauntlet STK

$75.00 – $93.00

THIS ITEM IS NOT DESIGNED FOR THE GAUNTLET 30
IT HAS ITS OWN HAMMER PRELOAD ADJUSTER STOCK

The single largest performance increase modification item for the Gauntlet. The Super Tune Kit allows complete power adjustment which opens all the possibilities of lower or higher foot-pounds (FPE) of energy for whatever the user desires. Do you need only 5FPE no problem back off the adjustment using a 5/64″ allen wrench and you are only delivering 5FPE and will realize over 200 shots on a stock bottle fill of 3000PSI!

Want 27-30FPE for dropping that 20lb trash bandit, no problem, crank up the adjuster using a 5/64″ allen wrench and you instantly have the power necessary for either long range or high energy delivery on target. The use of a chronograph is required in order to know what the rate of travel is of the projectile and there is no better chronograph than the FX Pocket Radar V2. (Power examples given are the .22 caliber version Gauntlet 1) 

For the Gauntlet 1 and Gauntlet 2. Be sure to select the proper generation as there is a difference and improperly selected kits are not returnable.
BE SURE TO SELECT THE CORRECT GENERATION GAUNTLET

CONTENTS:

  • Adjuster Plug Assembly.
  • Smaller, Lighter Composite Poppet.
  • Hajimoto Hammer Spring (Black Long)
  • Lighter Trigger Spring (Bright Small).
  • 5/64″ Allen Wrench For Adjusting Power.

The single largest performance increase modification item is available for the Gauntlet 1 and Gauntlet 2.
Consider adding the o-ring kit so you have all that you need should one of the factory o-rings get damaged during the kit installation, see option below.

Be sure to follow my written instructions in the document below.
Use the video to install but follow these written instructions to adjust and tune the STK:

Written Detailed Tuning Instructions for the STK

More details below.
Always read the content below because any revised instructions, video, photos, or other links will be there.

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SKU: HPGSTK Categories: , , , , , Tags: , , , , , , ,

Description

Consider adding the o-ring kit so you have all that you need should one of the factory o-rings get damaged during the kit installation.

Here is the installation video for the Super Tune Kit which shows the entire installation procedure.

YOU MUST FOLLOW THESE WRITTEN INSTRUCTIONS AS THEY CONTAIN THE LATEST INFORMATION:
Written Detailed Tuning Instructions for the STK

For the generation Gauntlet 1 and Gauntlet 2 (not the Gauntlet 2SL) the spacer is not reinstalled.

At minute marker 6:25 the SPACER (#25) does NOT get reinstalled. I don’t mention this in the video but I do not install it (#25) either.

If air is leaking out of the barrel as fast as you put air in the tank, here are some steps to to correct the issue.

1) Make sure the gun is on safe.

2) Cock the rifle so nothing is pushing the valve poppet open.

3) If it still leaks you may have to perform a more aggressive poppet valve burnishing technique known as the sandpaper technique as detailed in Travis’s video here:

Link to the original Gauntlet Schematic:
Umarex Gauntlet Schematic Drawing

GAUNTLET 2 POWER ADJUSTER HOLE LOCATION

Additional information

Weight 2 oz
Dimensions 3 × 2 × 1 in
Generation

Gauntlet 1, Gauntlet 2, Gauntlet 2 SL
Caliber

, ,

2 reviews for Super Tune Kit (STK) for Gauntlet 1 and 2

  1. ROBERT FUNK (verified owner) –

    100% get this for your Gauntlet .25!
    My Gauntlet .25 has a larger 22 cu. in. bottle and the reg turned up to 2100 psi.
    I installed this kit and had an issue. No fault of Hajimoto Productions. 100% my own doing. I emailed him and sent photos. He had the fix right away.
    I sent 3 mags across the chronograph after that with 25.4gr JSB Exact Kings at 895 fps or 45 ft. lbs. the spread was a whopping grand total of 5 fps!! Insane! You talk about consistency! WOW!
    If you get this kit be sure to order the O-Rink kit. I can almost guarantee you will “scalp” some O-Rings in the process. Just the this gun was made.
    It is really nice having the option of adjustability along with a much more efficient valve setup on your Gauntlet.
    Customer service Can’t be beat either! Hajimoto is a real awesome Dude!

  2. jimmygraves20 (verified owner) –

    Wow! I had no idea what this upgrade would do for me.
    I was a little disappointed after making a few changes but everything came together I started playing around with the hammer preload adjuster.
    I installed a 22 cu in bottle with a new regulator set at 2200, new rings, a high travel valve stop, and the Super Tune Kit in my Gauntlet 1 .25 cal. I started out getting around 920 fps with 33.95 JSB’s. HOWEVER, I was only getting about eight shots before it started falling off and after about 16 shots my overall pressure went below 2000 psi. It was hitting hard and pretty accurately but I got tired of filling it up. (I actually forgot about the power adjuster) I took the regulator down to 2000 and started playing around with the power adjuster. Eventually, I landed on about 805 fps and was very accurate. The most important thing that I stumbled across is that the power adjuster really helped me increase my shot count. I was getting about 25+ – 805 fps shots. Even after it dropped off my poi was still pretty good.
    Also! The gun is so smooth, it was kicking quite a bit before but now it’s perfect. I was hitting a small 1/2″ socket at 50 meters and killing my paper. It feels so good, this must be the sweet spot for my gun, everything just came together because now I could simply adjust the hammer. I didn’t know too much about tuning and harmonics so I watched a bunch if vids, now I have a little better understanding as to what I was doing.
    THIS KIT IS A GAME CHANGER! MANY MORE CONTROLLED SHOTS AND VERY SMOOTH/QUIET!!!!!!

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