Steel Thunder Custom Cycles - aftermarket motorcycle parts for Harley-Davidson and American custom bikes.
  Click to go to home page of Steel Thunder Custom Cycles motorcycle parts store. Click here to go to Site Map and Search  Tool. Click here to contact us here at Steel Thunder Custom Cycles motorcycle parts store.
  Click here to view, download or order catalogs. Click here to go to the Sportster Section.  We love Sportsters!

 

 

 

Win a Motorcycle & Help Bikers Against Child Abuse - More Info & Raffle Tickets for sale here.

SHOPPING:

Specialty pages:

Sportster Section

Buell parts

V-Rod parts

Bike Kits & Rolling Chassis Kits

Body

Books/Manuals

Catalogs

Drivetrain/Transmission

Electrical

Engines

Exhaust

Frames & Swingarms

Front End

Fuel : Gas/Air/Oil

General Merchandise

Gift Suggestions/Gift Certificates

Handlebar/Control

Ignition

Lighting & Licence plates

Mirrors

Motorcycles for saleSaddlebags/Luggage

Seats & Sissy Bars

Security

Shocks

Tools/Shop/Hardware

Trailers/Ramps/Wheel Chocks

Wheels/Tires

Wide Glide Conversion/Triple Trees

Wide Tire Kits

Windshields

OTHER PAGES:

Credentials

Contact Us

F.A.Q. (frequently asked questions)

Local Marshfield Info at steelthunderusa.com

Site Map & Search

Tech & Info Section

Terms

Photos, Fun & Links

Steel Thunder Custom Cycles

152 York Drive

Marshfield, MO 65706

417-468-2326

Ultima El Bruto Motorcycle Engines

Made in U.S.A.

Please note: When comparing prices to others, please be aware that some companies do offer lower pricing by buying engines unassembled, and then put them together themselves (thus, have no factory warrantee). All parts and/or engine, tranny, etc., sold at STCC are 100% factory assembled and warranteed.

NOTE: ALL ULTIMA MOTORCYCLE ENGINES NOW COME WITH MUKUNI CARBURETORS & AIR CLEANERS AND ULTIMA IGNITIONS (Made by DYNATEK)! Pictures show S&S carb.

Ultima's Polished 113 Cubic Inch Motor.  Click to see larger images.

Ultima's Polished 113 Cubic Inch Motor

Click photos or here to see larger images.

Ultima's Polished 113 Cubic Inch Motor shown from the back.

Ultima's Polished 113 Cubic Inch Motor (back)

Click photos or here to see larger images.

Ultima Engines have transferable warranties. If you are building to sell, this really counts!

See Photos of Ultima Engines- photos and more info

________

To order call our toll free number: 1-866-889-7828.

Basic Warranty on Ultima Engines is 24 months on the 100/113 and 12 months on the 120/127.

CONTACT US

_________

Ultima's El Bruto Series 100 CI, 113 CI & 127 CI Big Bore Motorcycle Engines

Made in U.S.A - see review of El Bruto Motor in "Cycle World Power & Performance" #4

Go to Price List

El Bruto series engines from Ultima 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. Midwest's commitment to engineering excellence and competitive pricing brought El Bruto to life with a completely new designed set of casting emphasizing performance, reliability and value.

All 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 Ultima's 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 boat the most powerful engines on the market as well! We think that you will agree these engines are the best value anywhere.

Product Specifications/Highlights

NOTE: ALL ULTIMA ENGINES NOW COME WITH MUKUNI CARBURETORS & AIR CLEANERS AND ULTIMA IGNITIONS (Made by DYNATEK)! Pictures show S&S carb.

100 C.I.

  • 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

113 C.I.

  • Bore: 4.000"
  • Stroke: 4.5"
  • Piston: Forged
  • Compression: 10.2:1
  • Rated Power: 120RW HP - 120 LB FT Torque

 

  • Camshaft: 264 Duration .625" lift
  • Valve Spring: Ultima
  • Chrome Nose Cone/Rocker Boxes
  • Billet Oil Pump
  • Chrome Tappet Blocks

120 C.I.

  • Bore: 4.25"
  • Stroke: 4.25
  • Piston: Forged
  • Compression: 9.8:1
  • Rated Power: 130RW HP - 135 LB Ft Torque

 

  • Camshaft: 252 Duration .625" lift
  • Pushrods: Crane
  • Valve Spring: Ultima®
  • Chrome Nose Cone/Rocker Boxes
  • Billet Oil Pump
  • Chrome Tappet Blocks

127 C.I.

  • Bore: 4.25"
  • Stroke:4.5"
  • Piston:Forged
  • Compression: 10.2:1
  • Rated Power: 140RW HP - 145 LB FT Torque

 

  • Camshaft: 264 Duration .625" lift
  • Pushrods: Crane
  • Valve Spring: Ultima®
  • Chrome Nose Cone/Rocker Boxes
  • Billet Oil Pump
  • Chrome Tappet Blocks

PRICE LIST - prices include shipping within contiguous 48 United States

SPECIAL - Same price, any size!

CLICK HERE TO BUY ONLINE

100 CI Complete Engine

  • 298-250 - Complete 100 CI Engine, Natural Finish ... $4,350.00
  • 298-251 - Complete 100 CI Engine, Black Finish ... $4,495.00
  • 298-252 - Complete 100 CI Engine, Polished Finish ... $4,850.00

113 CI Complete Engine

  • 298-253 - Complete 113 CI Engine, Natural Finish ... $4,350.00
  • 298-254 - Complete 113 CI Engine, Black Finish ... $4,495.00
  • 298-255 - Complete 113 CI Engine, Polished Finish ... $4,850.00

PLEASE NOTE:  The larger size engines below WILL NOT FIT STOCK FRAMES.

120 CI Complete Engine - NOW AVAILABLE!

  • 298-256 - Complete 120 CI Engine, Natural Finish ... $4,350.00
  • 298-257 - Complete 120 CI Engine, Black Finish ... $4,495.00
  • 298-258 - Complete 120 CI Engine, Polished Finish ... $4,850.00

127 CI Complete Engine

  • 298-272 - Complete 127 CI Engine, Natural Finish ... $4,350.00
  • 298-273 - Complete 127 CI Engine, Black Finish ... $4,495.00
  • 298-274 - Complete 127 CI Engine, Polished Finish ... $4,850.00

Read HOT BIKE Review on Ultima 127 cubic inch engine.

NOW AVAILABLE! 140 CI ENGINE ... Please note that these are racing engines, and have no warranty.  They WILL NOT FIT STOCK FRAMES... you must have a custom frame with additional clearance. Please call to order:  toll free 1-866-889-7828, 9-5 CST, M-F.

  • 298-243 - Natural 140 CI Engine... $5695.00
  • 298-244 - Black 140 CI Engine ... $6365.00
  • 298-245 - Polished 140 CI Engine ... $6725.00

To Order: Call toll-free: 1-866-889-7828. 9-5 CST M-F.

FAQ - - Contact Us

These parts are for American motorcycles, we do not carry parts for foreign makes.

See Photos of Ultima Engines- photos and more info

TERMS

*FREE SHIPPING APPLIES IN CONTINTENTAL 48 UNITED STATES ONLY. AK, HI and APO/FPO will have additional shipping fees. We ship only within the U.S.A. and to APO/FPO (military addresses; weight and size restrictions apply.). We do not accept foreign credit cards. We do not ship to Puerto Rico.

Prefer to call in your order to Steel Thunder? Call toll-free: 1-866-889-7828. 9-5 CST M-F.

FREQUENTLY ASKED QUESTIONS

Pay with Paypal

Please note that all prices are subject to change.