Speedmaster sportsman series rotating assemblies offer superior strength, performance and reliability. They include a Speedmaster forged 4340 steel crankshaft, Speedmaster I-beam 4340 connecting rods with ARP bolts, Speedmaster forged pistons, Speedmaster rings and 'King Bearings' Main & Connecting Rod Bearings. Speedmaster sportsman series rotating assemblies are the perfect choice for engines up to 900 hp and 3000-7500 RPM.
- Provide industry-leading fit, finish, and durability.
- Designed for performance enthusiasts wanting to get the most out of their engines