Sonnax® - High Performance Automatic Transmission Valve Body Recalibration Kit

High Performance Automatic Transmission Valve Body Recalibration Kit by Sonnax®. Includes: 1-2 Accumulator Valve Shim, TCC Pressure Limiter Valve and Spring Optional (eliminates PWM/EC3 function), Boost Valve with O-Ring 0.490", Elevated Pressure Regulator Spring, High RPM Pump Slide Spring, Spacer, 4th Servo Return Spring, Servo Cushion Spring, Servo Piston D-Ring Kit, 3-4 Accumulator Piston Kit, 3-4 Accumulator Spring, Servo Release Check Valve, Forward Accumulator Kit, Checkballs (8), Separator Plate Plugs Not Shown, Twist Drills Not Shown, 1-2 Pinless Accumulator Piston Kit, 1-2 Accumulator Inner Spring, 1-2 Accumulator Outer Spring, 1-2 Accumulator Waved Spring. The Sonnax Performance Pack for transmissions is a must-have for any heavy-duty vehicle and the very best foundation for high-performance racing. All components work together to carefully tune line pressure, accumulator pressure and shift calibration. It’s the ultimate way to get an impressive transmission that responds to throttle and increased load with quick, firm shifts.

Includes

• 1-2 Accumulator Valve Shim
• TCC Pressure Limiter Valve and Spring Optional (eliminates PWM/EC3 function)
• Boost Valve with O-Ring 0.490"
• Elevated Pressure Regulator Spring
• High RPM Pump Slide Spring
• Spacer
• 4th Servo Return Spring
• Servo Cushion Spring
• Servo Piston D-Ring Kit
• 3-4 Accumulator Piston Kit
• 3-4 Accumulator Spring
• Servo Release Check Valve
• Forward Accumulator Kit
• Checkballs (8)
• Separator Plate Plugs Not Shown
• Twist Drills Not Shown
• 1-2 Pinless Accumulator Piston Kit
• 1-2 Accumulator Inner Spring
• 1-2 Accumulator Outer Spring
• 1-2 Accumulator Waved Spring

Features

• Consistent, firmer shifts under load without sacrificing low-speed drivability or guessing on calibration
• Faster pressure increase and higher overall pressure for greater clutch/band holding power
• Three ultra-reliable, patented, billet pinless accumulator pistons
• Unique 1-2 accumulator spring combination for shifts with character
• Improved high RPM pressure
• Third accumulator valve gets the 2-3 right the first time, every time
• Durable parts target commonly worn areas and prevent future damage to the accumulators and separator plate

Sonnax® has been bringing superior-quality transmission and drivetrain components to the automotive aftermarket since 1978. The company has everything you need to remanufacture torque converters, rebuild automatic transmissions, upgrade driveshafts, and protect the driveline from over-torque damage. Headquartered in southern Vermont, Sonnax is one of the fastest-growing companies in the state, boasting state-of-the-art design, development, and inspection facilities. Sonnax also has technical development centers in California, Georgia, New Jersey, Missouri, and Wisconsin. The company consists of 250 employees who take great pride in the Sonnax name and strive to further the company’s reputation for excellent technical knowledge and customer dedication. As a leading supplier to the automotive aftermarket, Sonnax exports to more than 70 countries and supports emerging markets worldwide.