Ultima has put together our first High Output Engine packages for the most demanding performance enthusiast. All Engines feature our heavy duty C355 Castings and Dynamic Balanced Press Pin Crank Shafts. This is a difficult engine to describe the performance level to anyone who hasn’t had it and this is the correct answer for the customer who demands the highest performance available.

Things you must know

• You must have a frame that can accept an engine 5/8” taller than a stock Evo.
• You must have heavy-duty drive train components.
• Limited warranty.
• Rated Power: is based on using a very large bore Carb such as the 48mm Mikuni or S&S D series and Hooker Step Tuned Short Staggered Dual Ex. Other Combinations will change the power level attainable

Case

• Machined In U.S.A.
• Cast-in steel inserts guaranteed not to move.
• Large bore breather for increased crank case 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.

Crankshaft

Our New state of the art designed crankshaft incorporates a massive 1.670 diameter pin that is pressed into the one piece, heat treated, 4140 steel flywheel half making these crankshafts some of the strongest available on the market today. These crankshafts feature all new 8.0” long H-Beam rods with .927 diameter wrist pins to handle all the power you can throw at them. These are also balanced using our exclusive methods making these some of the smoothest engines in the industry.

Cylinder

• C355-T6 Casting.
• Cast in liners will not move.
• All fins are machined for an excellent cosmetic appearance.

Cylinder Head

• C355-T6 Casting.
• All fins are machined for excellent cosmetic appearance.
• Twin Cam Styling means 30% more fin than most Evolution® style heads for cooler running.
• Compression release valves.
• 2.300 stainless intake valves, 1.800 stainless exhaust valves.
• CNC ported.
• Manganese Bronze guides.
• High silicon wire valve spring with chromoly retainer.