The Black Widow 550 from Next Level Engine & Transmission is built for drivers who demand durability and consistency from their 68RFE-equipped trucks. Rated for up to 550 horsepower, this transmission is designed to deliver dependable performance for towing, hauling, and everyday driving. Ideal for trucks running stock power levels and factory-size tires, the Black Widow 550 offers smooth operation, solid shifting, and long-lasting reliability. It’s the perfect upgrade for those who want a stronger, better-than-stock transmission built to perform day in and day out. RECOMMENDED FOR: Trucks producing up to 550 HP Stock power levels and factory-size tires Daily drivers, tow rigs, and work trucks Owners looking for a durable upgrade over stock This Transmission Features The Following: UPGRADED INTERNAL COMPONENTS: Next Level Transmission Multi Friction Billet Converter Next Level 14 Overdrive in Stock Clutch Hub (12 is stock) Next Level Transmission Heavy Duty Sprag Next Level High Performance Borg Warner Clutch Kit Extra Capacity Aluminum Transmission Deep Pan Next Level Billet 4C snap ring retainer New OEM Line Pressure Sensor OEM Filter Kit Next Level High Pressure Tunable Valve Body New OEM Solenoid Pack Performance SS Valve High Pressure separator plate Tig Welded Output Planets TUNER INFORMATION: For the 68RFE Black Widow 500, the following settings should be used to properly tune the transmission: Line pressure set to 225 PSI above 30% throttle angle 100 PSI resting pressure No lockup until 4th gear Low/reverse sprag holdout enabled For 2019 and newer models, the over-drive pulse test must be turned off Download 68RFE Installation Instructions HERE. WARRANTY: Includes: a 2-year / unlimited miles warranty. Important Notice: Trucks equipped with tires larger than 35 inches are not covered under warranty unless there is documented proof of a differential gear ratio change. NOTE: Next Level Engine & Transmission reserves the right to alter, update, or substitute build components and specifications at its discretion, without prior notice or obligation. These adjustments may be made to help customers meet specific timelines while maintaining the highest standards of quality, durability, and efficiency. RETURNS: *We accept returns within 10 days of receipt, as long as the transmission is in like-new condition and has not been installed. Please note that a 25% restocking fee applies, and customers are responsible for return shipping costs.
