- Transmission & Drivetrain
- Automatic Transmission Components
- Sonnax Heavy-Duty Transmission Main Shafts
Direct Replacement High-Performance Main Shaft with Superior Strength
Looking for a replacement main shaft that is stronger than the OEM part? Heavy-Duty Transmission Main Shafts by Sonnax are engineered to handle high-performance applications with up 1,000 HP. Manufactured using high-strength 300M steel with a unique Sonnax heat treatment process for maximum durability.