Collection: Drivetrain & Transmission
Ultima is now offering the new El Bruto Series Engines. Their commitment to engineering excellence and competitive pricing brought El Bruto to life with a completely new designed set of castings emphasizing performance, reliability, and value.
Made In U.S.A. Cast-in steel inserts guaranteed not to move. Large bore breather for increased crankcase vacuum and less blow by. 1/2" Alignment dowels for true line bore. Counterbored stainless allen head case bolts. Close machining tolerances. Made from prime C355-T6 aluminum that is superior in strength to A356. Styling and cosmetic machining for a custom look.
Forged 4140 Steel. Dynamic balanced for the smoothest running engines in the industry. Lightweight 7.44" high-performance H-beam rods w/.792" fins. Jims Machining shafts and pins.
C355 Casting. Cast-in liners will not move. All fins are machined for an excellent cosmetic appearance.
C355-T6 Casting. All fins are machined for excellent cosmetic appearance. Twin cam styling. 30% more fin area than evolution style heads for cooler running. 2.100 stainless int. valves. 1.700 stainless ex. valves. Manganese bronze guides. High silicon wire valve spring with chromoly retainer.