Limited inventory. Real Monster transmissions, torque converters, fluids, kits, tuning tools and drivetrain parts marked down for our end-of-summer inventory blowout.
The newest StreetMonster is here. Step beyond a stock-style replacement with an upgraded remanufactured GM 8L90E built around the wear areas and hydraulic issues that matter in real street, truck and towing use.
This is a focused inventory blowout—not a sitewide gimmick. We pulled together select transmissions, converters, drivetrain parts, fluids, tuning tools and rebuild components with discounts up to 30%.
Use the filters below to find your platform or search by transmission family, vehicle, engine or SKU.
Transmission fitment can change by year, engine, drivetrain and application. Give Monster a call and we’ll help you verify the right unit before you order.
Monster Transmission's Labor Day and End-of-Summer Blowout brings together a limited group of sale-priced transmissions, torque converters, tuning tools, transmission fluid, cooling components and installation parts. The sale includes popular GM, Ford and Ram transmission families, with discounts of up to 30% on select SKUs while inventory is available.
This page is designed to do more than show a clearance list. Use the live SKU cards above to check current availability, then use the technical guidance below to verify the transmission family, drivetrain, vehicle year and intended use before ordering. If you are unsure, identify your transmission or contact Monster before checkout.
The GM portion of this blowout covers everything from classic 700R4 and 4L60E-family applications to heavy-duty 4L80E/4L85E units and modern 6L80E/6L90E six-speeds and the newly launched StreetMonster 8L90E eight-speed. Year, engine, output shaft, 2WD/4WD configuration, tag ID and calibration requirements can all affect fitment, so match the exact SKU rather than shopping by transmission name alone.
Ford sale inventory includes StreetMonster and SportMonster transmission options plus torque converters and supporting components. F-150, E-Series, Mustang and Super Duty applications can vary by year, engine and drivetrain, making exact part-number verification especially important before ordering.
Ram 6.7L Cummins owners will find select 68RFE-related inventory in the sale, including a StreetMonster transmission, flexplate, thermostat-bypass hardware and fluid. When replacing or upgrading a 68RFE, vehicle year, drivetrain, tuning, tire size, towing use and other modifications should be considered before choosing a build level.
Discounted inventory only helps if the unit is correct for the vehicle. Use this checklist before ordering a transmission or converter from the sale.
Start with the existing transmission model or OEM application. A 4L60E, 4L65E and 4L70E may look related, but electronics, input/output configuration and vehicle calibration can make them non-interchangeable without additional work.
Verify model year, engine size and whether the vehicle is 2WD or 4WD. On many applications, production changes, tag IDs, case configuration and output style matter just as much as the transmission name.
StreetMonster, SportMonster and TrackMonster products are intended for different use cases. Daily driving, towing, larger tires, engine modifications, tuning and competition use should all be considered when selecting a performance level.
Transmission life depends on more than the unit itself. Correct fluid, cooling, converter selection, programming or relearn procedures and proper TV-cable setup on applicable older transmissions can all affect operation and durability.
Monster Transmission & Performance supplies replacement and performance-focused automatic transmissions, torque converters and drivetrain components for a broad range of GM, Ford, Dodge and Ram applications. The goal of this blowout is simple: move select on-hand inventory at aggressive end-of-summer pricing while still helping customers choose the correct part for their vehicle.
If a sale SKU is not right for your combination, do not force the fit just because it is discounted. Use Monster's fitment resources or call 800-708-0087 so the team can help identify the correct transmission, converter or supporting part.
No. The promotion applies to select products shown on this sale page. Discounts vary by SKU, with select products discounted up to 30%. The current product-page price controls at checkout.
The sale page checks the matching Shopify SKU as each product card loads and uses the storefront's current availability output. Inventory can change quickly as orders are placed, so the product page and checkout remain the final source of availability.
Match more than the transmission family. Confirm the vehicle year, engine, drivetrain, existing transmission and any applicable tag IDs or production differences. If you are unsure, contact Monster before ordering.
They represent different performance-oriented build levels and intended uses. The correct choice depends on the transmission family, vehicle weight, engine output, tuning, tire size, towing requirements and how the vehicle will be driven. Use the individual product specifications or speak with Monster for the correct recommendation.
Yes. The sale list includes select torque converters, rebuild and installation parts, TV-cable components, tuning hardware, transmission fluid, cooling products and other supporting components in addition to complete transmissions.
Some transmission products require a refundable core deposit. The applicable product page will show the current core-deposit requirement and payment options for that transmission.
Possibly, but a transmission swap can require additional mechanical, electrical, programming and calibration work. Fitment and warranty eligibility can also differ when the vehicle was not originally equipped with that transmission model. Contact Monster before purchasing a sale unit for a swap.
The page is currently scheduled through Labor Day, September 9, 2026. Individual products can sell out before the promotion ends, and sale pricing may vary by SKU.
Up to 30% off select sale products. Discounts vary by SKU. Inventory and pricing shown on this page are checked against the matching Shopify product/variant as the product card loads and may change as items sell. Final product-page pricing, fitment, availability and checkout eligibility control. Sale items are available while supplies last. Other exclusions or promotional restrictions may apply.