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Chevy / GMC Performance • 6L90 / 6L90E

Quality by Design. Monster by Nature.

StreetMonster Chevy 6L90E upgraded transmission
Starting at$3,099

StreetMonster 6L90E

  • Upgraded Clutches BorgWarener clutch packs to address common wear points
  • Calibrated Valve Body for cleaner shifts and better clutch apply
  • Thermal Bypass support for improved cooling loop efficiency
  • Warranty: 5 Year • Unlimited Miles
  • Horsepower: 100 over stock
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SportMonster Chevy 6L90E performance transmission
Starting at$3,599

SportMonster 6L90E

  • GFX Frictions increases torque capacity, designed for high-horsepower applications
  • Tow & Prow Shift Kit For Firmer Shifts and better clutch apply
  • Matched Billet Converter Upgraded Front Cover to Reduce Heat
  • Warranty: 6 Year • Unlimited Miles
  • Horsepower: 750HP
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Why Choose Monster for Your Chevy 6L90E

  • Two clear builds: StreetMonster for heavy-duty street/tow use, SportMonster for higher power and spirited driving.
  • Addresses known 6L90 pain points (3-5-R wave plate, 4-5-6 clutch durability, heat management).
  • Converter and hydraulics are matched to your setup (vehicle weight, gearing, tires, towing, tune).
  • Dyno-tested reman units with robust warranty coverage and MonsterCare options.

What vehicles use the 6L90E?

Common in Chevy/GMC 2500/3500 HD trucks, Express/Savana vans, and select performance applications using the 6.0L/6.2L platforms. We’ll confirm by VIN.

Do I need programming after install?

Yes. Perform T43 adaptive learn/relearn and follow OEM/module update procedures for your year. This ensures correct shift timing and longevity.

Is a converter included?

Yes—each build includes a matched lockup converter configured for your exact usage (towing, daily, performance).

Cooling & maintenance?

Always flush/replace the cooler & lines. We recommend auxiliary cooling and inline filtration, especially for towing and hot climates.

Warranty differences?

StreetMonster: 5 Year / Unlimited Miles. SportMonster: 6 Year / Unlimited Miles for performance use. Ask about MonsterCare extensions.

*HP figures are guidance; vehicle weight, tires, gearing, load, and tuning affect capacity.