ENGINES AND COMPONENTS

Mountain Machine

Engines &Components

This page was last updated: April 2, 2023

MOUNTAIN MACHINE & MOTORCYCLE

Specializing in custom CNC machining.& Harley Davidson service and parts.

Evergreen, Colorado

303-862-8803

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Ultima 4.00 Bore 107 Engine Ultima 4.00 Bore 113 Engine

Bore: 4.000”

Stroke: 4.25”

Piston: Forged

Compression: 10:1

Rated Power: 115RW HP

120 LB FT Torque

Camshaft: 248 Duration .625” lift

Valve Spring: Ultima

Chrome Nose Cone / Rocker Boxes

Billet Oil Pump

Chrome Tappet Blocks

Ignition included on assembled engines.

Ultima 3.875 Bore 100 Engine

Bore: 3.875”

Stroke: 4.25”

Piston: Forged

Compression: 9.6:1

Rated Power: 110RW HP

110 LB FT Torque

Camshaft: 248 Duration .625” lift

Valve Spring: Ultima

Chrome Nose Cone / Rocker Boxes

Billet Oil Pump

Chrome Tappet Blocks

Ignition included on assembled engines

El Bruto® Series

Ultima 4.00 Bore 107 and 113 CI Engines & Long Blocks

Ultima® is now offering the new “El Bruto” Series Engines which are designed to provide our customers with a U.S.A. built High Performance engine that is priced to be the best value of any engines now on the market.

All of the castings in these engines are poured in U.S. foundries and are based on all-new CAD designs cast from C355 aluminum, a common U.S. military alloy known for its stability over multiple heat cycles. The engine components are machined on state of the art CNC equipment for guaranteed dimensional accuracy and repeatability. All of our engines are dynamically balanced using proprietary methods to provide the smoothest running engines on the market and now with our new high flow cylinder heads these engines now can boast the most powerful engines on the market as well!! We think that you will agree these engines are the best value anywhere. 12 /12 warranty. d.o.p.

Case

Made 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

Forged 4140 Steel. Dynamic balanced for the smoothest running engines in the industry. Light weight 7.44” high-performance H-beam rods w/.792” fins. Jims Machining shafts and pins.

Cylinder

C355 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. 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.

100 CI Complete Engine

298-250 Complete 100CI Engine, Natural.

298-251 Complete 100CI Engine, Black.

298-252 Complete 100CI Engine, Polished.

107 CI Complete Engine

298-230 Complete 107CI Engine, Natural.

298-231 Complete 107CI Engine, Black.

298-232 Complete 107CI Engine, Polished.

113 CI Complete Engine

298-253 Complete 113CI Engine, Natural.

298-254 Complete 113CI Engine, Black.

298-255 Complete 113CI Engine, Polished.

Bore: 4.000”

Stroke: 4.5”

Piston: Forged

Compression: 10.2:1

Rated Power: 120RW HP

120 LB FT Torque

Camshaft: .640” Lift

Valve Spring: Ultima

Chrome Nose Cone / Rocker Boxes

Billet Oil Pump

Chrome Tappet Blocks

Ignition included on assembled engines.

This 124 cubic inch engine is designed with touring, and or bagger riders in mind.

#298-228

Engine Polished

#298-228

Engine Natural Finish

#298-228

Engine Black

Starting with the proven 120 engine as the basis, the 124 cid was accomplished by

increasing the stroke from 4.25” to 4.375”. This insures the rider of at least 100 ft. lbs. of torque

above 2000 RPM for passing situations. The camshaft was changed to lower the peak torque

RPM and to spread out the torque curve. At the same time the camshaft ramps were designed

to provide quiet, easy on the valve train longevity.

The compression ratio was dropped slightly to allow for the occasional bad tank of fuel without

causing major engine damage. This slight drop in compression also has the effect of smoothing

out the firing impulses for an even smoother ride. Couple these improvements to pistons made

from time proven 2618 alloy and you have a very quiet, powerful, and long lasting engine for

your riding pleasure.

This combination has been proven on the dyno with torque exceeding 135 ft. lbs. and horse-

power exceeding 140. This data was gathered on a Superflow Dyno, which is recognized as 10%

low when compared to Dyna Jet numbers. Add 10% and you get an astounding 148 ft. lbs. and

154 HP! Not bad for a “bagger” engine!

Ultima Long Rod 140 Engine

140 CI

Bore: 4.400

Stroke: 4.625

Press Pin Crank w/ 8” Rods

Piston: Forged Flat Top w/ 927 Pins

Compression: 10.8:1

Cam Shaft: .640” Lift

CNC Ported Oval Port H.O. Heads

2.300” Int 1.800” Ex Valves

Chrome Billet Reed Valve Rocker Boxes

Billet Oil Pump

Ignition is installed on assemble engines

Includes 48mm Mikuni Carburetor

Rated Power 165 HP—170 Lb Ft Torque

The 4.400” bore

140" El Brutos®

are engines that defy

description to those

who have not yet

experienced this level of

Horsepower & Torque.

This is the correct answer

for the customer who

demands the highest

performance available.

El Bruto® Competition Series

Ultima Long Rod 140 CI Engines

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 availible. These Engines are available in both Assemble Complete and Unassembled Long blocks.

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

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.

140 CI Complete Engine

#298-243 Complete 140 CI Engine, Natural

#298-244 Complete 140 CI Engine, Black

#298-245 Complete 140 CI Engine, Polished

140 CI Long Block Unassembled

#298-240 140 CI Long Block, Natural

#298-241 140 CI Long Block, Black

#298-242 140 CI Long Block, Polished

140 CI Complete Engine

#298-243 Complete 140 CI Engine, Natural

#298-244 Complete 140 CI Engine, Black

#298-245 Complete 140 CI Engine, Polished

ULTIMA BLACK DIAMOND CUT ENGINES

> 296-251 100 BLACK DIAMOND CUT

> 296-244 140 BLACK DIAMOND CUT

> 296-273 127 BLACK DIAMOND CUT

Black Nickel Plating

on Ultima® El Bruto® Engines offer a look unlike any other

production motor on the market. Rocker Boxes, Air Cleaner Cover,

Push Rod Covers, Tappet Blocks, and

Cam Cover all feature

the Black Gem® Plating.

#298-228

113 C.I. Black Gem®

Competition Series Engine

#298-229

127 C.I. Black Gem®

Competition Series Engine

Rated Output 113 C.I.

120 HP with 120 LB FT Torque. Not EPA Compliant. 113 C.I. c-series

engines carry a 12 month, 12,000 mile limited warranty from original date of purchase.

Rated Output 127 C.I.

140 HP with 140 LB FT Torque. Not EPA Compliant. 127 C.I. c-series

engines carry a 6 month, 6,000 mile limited warranty from original date of purchase

For those who are looking

for a quality Shovelhead

engine at a realistic price,

the wait is over!

Ultima® is proud to

present their newest

addition to the Ultima

engine lineup. Their engineers have developed

what we believe to be a

superior motor that will

please even the most

die-hard Shovelhead

enthusiast. This Ultima

shovelhead motor

offers modern technology

in a nostalgic exterior.

96 C.I. shovelhead engine carries a 6 month, 6,000 mile limited warranty

from original date of purchase.

#298-210

96 C.I.Engine

Ultima engine pricing and availability subject to change

Ultima engines

High Performance

Low Price

Made in the USA!

We will do our best to meet or beat any advertised price out there!