Mastercool 725 PSI Nitrogen Regulator Kit | with Gauge, Bleed Off, & Whip
Mastercool 725PSI Rubber Hose Regulator Kit | Schmidty Racing

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Base Price: $276.00

Product Code: N-REG-MAS725-8R-W


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This is a shock nitrogen filling kit from Schmidty Racing Suspensions commonly used to charge shocks such as ORI, King, and Fox, or anytime you want to charge two chambers simultaneously. Kit includes a Mastercool (53001) 0 - 725 PSI regulator and comes standard with 8' long rubber hoses. There are different hose length options made of either rubber or stainless steel.

The end assembly has a polished, SRS engraved, solid stainless steel shut off valve connected to an SRS engraved billet "T". It has a 12" braided stainless steel flexible hose with a swivel end to allow the no-loss chuck to rotate 360 degrees to get into tight places. The rubber hoses are rated to 3250 PSI and the stainless steel ones are braided, Teflon-lined, and rated to 3000 PSI. All have 360 degree swivel fittings on each end. The "T" also has a SRS secondary gauge for precise reading of the nitrogen charge. It also has a bleed off button to release excess pressure and dial in the the precise pressure you want.


    • Rubber: 8', 12', 15' lengths
    • Stainless Steel: 6', 8', 12', 15' lengths

    Secondary (SRS) Gauge:
    • 0 - 160 PSI with 2" face (Dry)
    • 0 - 300 PSI with 2" face (Glycerin)
    • 0 - 400 PSI with 2" face (Glycerin)
    • 0 - 600 PSI with 2" face (Glycerin)
    • 0 - 1000 PSI with 2" face (Glycerin) and higher rated PSI bleed off valve

This kit configuration allows the end assembly to be used as a diagnostic tool as well as a fill-tool by simply closing the shut off valve.


    MC53001 Regulator:
    • 0 - 4000 PSI tank gauge (rubber cushioned to guard from damage)
    • 0 - 1000 PSI output gauge (rubber cushioned to guard from damage)
    • CGA-580 tank supply nipple (will fit most nitrogen tanks available)
    • 725 PSI max output / delivery pressure

    No-Loss Chuck:
    • 360 degree swivel fitting
    • 500 PSI max output / delivery pressure
    • Fits schrader / tire stem thread size .305-32
    • Seals to schrader stems via copper crush washer
    • Nickel-plated brass body; rest is stainless steel
    • Supply line connection is -4 and is 90 degrees to axis of valve

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 3 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Nice quality July 15, 2019
Reviewer: Kevin Kostiuk from Loveland, CO United States  
Worked well. I would recommend it. Be sure to check all the fittings though they were not tightened on mine.

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  0 of 0 people found the following review helpful:
5 of 5 Shock service tools November 14, 2018
Reviewer: jason schlenz from SMITHFIELD, KY United States  
Everything you need to purge / refill / service your shockS to desired nitrogen pressures.  Top notch customer service !!!

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  0 of 0 people found the following review helpful:
5 of 5 Awesome product and service January 31, 2018
Reviewer: shayne from kailua-kona, HI United States  
Love the quick order processing, shipped the same day! Also this nitrogen fill kit is high quality and works well. Would recommend.

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