SKU: 87372860073

Microtech Auto Ultratech Gen IV 3.5" T/E OTF – Yellow Handle, M390MK Stonewash, Ram-Lok – Made in USA (MCT1123410YW)

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Description

Microtech Auto Ultratech Gen IV 3.5" T/E OTF – Yellow Handle, M390MK Stonewash, Ram-Lok – Made in USA (MCT1123410YW)The Ultratech. Fourth generation. Yellow handle. Tanto edge. The Microtech Ultratech is the benchmark OTF automatic by which most others are measured. The Gen IV represents the latest refinement of a platform that has been in continuous production since 1999. This version runs the T E tanto edge profile with a stonewash standard finish on M390MK blade steel. The yellow 6061 T6 aluminum handle is clean and immediately identifiable. New to the Gen IV:

The Ultratech. Fourth generation. Yellow handle. Tanto edge.

The Microtech Ultratech is the benchmark OTF automatic by which most others are measured. The Gen IV represents the latest refinement of a platform that has been in continuous production since 1999. This version runs the T/E tanto edge profile with a stonewash standard finish on M390MK blade steel. The yellow 6061-T6 aluminum handle is clean and immediately identifiable. New to the Gen IV: the Crud Kutter milled switch platform breaks up debris and reduces friction for more reliable deployment and lower maintenance intervals. The Dual-Fuel Drive Train and updated OTF mechanism produce the smoothest Ultratech action Microtech has ever shipped. Milled titanium pocket clip with ceramic balls, stainless glass breaker, stainless Torx hardware throughout. Made in Asheville, North Carolina.

Note from Lone Star Knife & Supply: If you are going to own one OTF, the Ultratech is the one. The Gen IV is a meaningful upgrade, not a cosmetic one. The action is noticeably smoother than prior generations and the Crud Kutter switch is a practical improvement for anyone who carries daily. Yellow handle, tanto edge, Asheville-built. 

Specifications

  • Overall Length: 8.54"
  • Blade Length: 3.5"
  • Blade Steel: M390MK
  • Blade Style: Tanto Edge (T/E)
  • Blade Finish: Stonewash Standard
  • Handle Material: 6061-T6 Aluminum
  • Handle Color: Yellow
  • Pocket Clip: Milled Titanium with Ceramic Balls
  • Glass Breaker: Stainless Steel
  • Hardware: Stainless Torx
  • Mechanism: Dual-Fuel Drive Train, Crud Kutter Switch Platform
  • Knife Type: OTF Automatic
  • Country of Origin: Made in USA (Asheville, North Carolina)

About Microtech

Microtech Knives was founded in 1994 and operates out of Asheville, North Carolina. Every knife in the line is manufactured in the USA. The Ultratech has been the flagship OTF platform since its introduction and remains one of the most copied designs in the automatic knife market.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 87372860073

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Martin Walyor
Bozeman, US
★★★★★ 5
Fantastic product
Size: 8 Fl Oz (Pack of 1)
Works Great, at first didn't believe all the reviews, I've bought 5 chainsaws from one season to the next. After each winter couldn't get them to start. Followed the instructions to flush and let sit for a few days. Every one started and ran great. Hands down, this is a remarkable product for cleaning out blocked fuel systems from sitting all winter would recommend it for all 2 cycle engines and use the stable blend for winter as well as anytime use to prevent fuel spoilage.
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Reviewed in the United States on March 12, 2026
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Wayland Efird
Phoenix, US
★★★★★ 5
Efird, a great product
Size: 8 Fl Oz (Pack of 1)
Used this in a Troy Built Garden Tiller, the tiller would stall and hard to crank until we use the Sta Bil Fast Fix, tiller now runs great and does not stall.
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Reviewed in the United States on April 25, 2026
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Amazon Customer
Louisville, US
★★★★★ 5
Worked great, saved me hundreds.
Size: 8 Fl Oz (Pack of 1)
I've had issues with the carburetor on my 2003 Honda ATV for years. It has needed cleaned regularly to stay running, and one repair shop wanted over $400 to replace the carburetor. One treatment with STA-BIL and it's running smooth again. Very impressive.
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Reviewed in the United States on May 21, 2026
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Chris Wildy
Phoenix, US
★★★★★ 4
Great for 2 cycle, meh for 4 cycle.
Size: 8 Fl Oz (Pack of 1)
This stuff is flat out amazing for 2 cycle small engines, works like advertised. 4 cycle isn't as good, if your engine hasn't ran in years, you'll still have to clean the carb, but it does help some. The 2 cycle oil for one is a lubricant and inhibits varnish buildup (especially a synthetic premium brand), and usually premium oil has a fuel stabilizer in it. Plus if you don't have a float bowl, there's not enough fuel for phase separation. I also use it in my mix for my ultrasonic cleaner when cleaning carbs. Overall a very good product, but understand it's limitations in this modern age of ethanal fuel.
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Reviewed in the United States on April 12, 2026
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G123
New York, US
★★★★★ 5
It works well.
Size: 8 Fl Oz (Pack of 1)
Great product that delivers on what it says it does. This won’t fix a mechanical problem or damaged component, but it will fix a stuck float, varnished tank, gummed up jet, or partially blocked emulsion tube.
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Reviewed in the United States on May 14, 2026

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