Overview
The TB48 billet crankshaft with a 105 mm stroke and knife-edge design (STD journal) is engineered for high-performance applications, offering a balance of increased displacement and high-RPM efficiency. Crafted from aerospace-grade 4340 billet steel, it delivers exceptional strength and fatigue resistance under extreme conditions. The knife-edged counterweights reduce windage losses inside the crankcase, improving engine response and power output at high RPM. Precision CNC machining ensures optimal balance and accurate fitment, while standard journal sizing allows compatibility with OEM-style connecting rods and bearings. The crankshaft typically includes drilled oil passages for enhanced lubrication, along with surface treatments such as nitriding, shot peening, and stress relief to extend durability and longevity. This makes it an ideal choice for custom TB48 builds focused on performance and reliability.
Features
- 105 mm stroke provides a balance between increased torque and high-RPM capability
- 4340 billet steel construction for superior strength and durability
- Knife-edged counterweights reduce windage and internal drag, improving efficiency
- Standard journal sizing allows use with OEM or aftermarket TB48 rods and bearings
- CNC machined for precise fitment and optimal engine balance
- Drilled oil passages enhance lubrication to critical bearing surfaces
- Nitrided surface treatment increases wear resistance and hardness
- Shot-peened and stress-relieved to improve fatigue life under high loads
- Magnaflux inspected to ensure structural integrity and crack-free operation