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Ultima Products

Ultima 127 C.I. Competition Series Engine-298-273-Black Finish

    • Based on 17 reviews
Condition: New
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$3,999.99 Why this price?

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Availability: Only 1 left in stock, order soon!
Fulfilled by Jireh Cycles
Arrives Monday, Dec 2
Order within 9 hours and 33 minutes
Available payment plans shown during checkout

Color: Black Finish


Features

  • Complete 127 CI Ultima Engine
  • Ignition & Carburetor included & preset
  • 140 HP 140 LB FT Torque
  • 4.250" Bore 4.500" Stroke
  • 6 Month Limited Warranty From Original Date Of Purchase

Description

The engines 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. Bore: 4.25”, Stroke: 4.5”, Piston: Forged, Compression: 10.2:1, Rated Power: 140 RW Horsepower, 140 LB FT Torque, Camshaft: .640” lift, Pushrods: Ultima adjustable Valve Spring: Ultima Beehive, Chrome Nose Cone / Rocker Boxes, Billet Oil Pump, Ultima High Volume High Pressure Chrome Tappet Blocks, NOT EPA COMPLIANT

Size: Pack of 1


Exterior Finish: Machined


Brand: Ultima Products


Vehicle Service Type: Truck


Color: Black Finish


Manufacturer: ‎Ultima Products


Brand: ‎Ultima Products


Exterior: ‎Machined


Manufacturer Part Number: ‎298-273


Date First Available: June 6, 2014


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Dec 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • So much horsepower and torque!
Color: Black Finish
Review Image by Richard Geedey Richard Geedey
Review Image by Richard Geedey Richard Geedey
Review Image by Richard Geedey Richard Geedey
When my Evo cam bearing fell apart I replaced it with an Ultima 127. My Evo was running an Andrews cam with an S&S carb and had a few other tweaks that made it respectable. The difference was still night and day. This new motor is a beast! I’ve got 600 miles on it so far with no issues. Longevity is always a concern with higher compression engines, but I’m not racing it so I’m hopeful for a long-term relationship. The only installation issue was needing to fabricate a bracket for the coil, which was covered in the installation manual. It’s a snug fit for my ‘92 FLSTF. ... show more
Reviewed in the United States on January 26, 2021 by Richard Geedey Richard Geedey
    • Ben good Brother took good care of me !!!
Color: Black Finish
My softailall had to change coil location if ur running a stock clutch I always run Barnetts and chk primary chain for weakness cracks in rollers I had a torque bar already from baby motor so hold on u like ir
Reviewed in the United States on December 6, 2019 by James Roberts
    • Piece of garbage - save your money and go S&S. You'll regret this purchase
Color: Black Finish
Review Image by Turner Turner
Cheap lifters let go, pieces of metal sucked into the oil pump and shredded the gears. 450 miles on the engine. I DO NOT RECOMMEND. How in your right mind do you build a high performance engine and cheap out on the lifters? I completely restored the bike and that took me out of the 1 year joke of a warranty. And now the bike is back in the shop needing an engine rebuild. If I wanted to rebuild the engine i wouldn't have bought a drop in. If you like projects, buy this engine as it will leave you on the side of the road. What an embarrassment. ... show more
Reviewed in the United States on September 14, 2020 by Turner Turner
    • Completely different bike with this motor
Color: Black Finish
Review Image by sean martin sean martin
This motor will pull your arms out of socket, seriously this thing makes my Road King move like a liter bike. The only issue I have had so far was a bad stator that the installer caused (They tried to rig the wiring and wires got cut and shorted, stator was actually still good). Called Jirah Cycles and got the correct part number figured out in minutes, the lady I spoke with was awesome. This is too much motor for the Harley branded touring stockers, installed Avon Venoms (AV71/AV72) and stopped having issues hooking up. I also have the Ultima 6-speed and it is butter-smooth. Update:4/19/21 Motor is still going strong with zero issues. (Just did a 90 mile ride yesterday) have added a full batwing, lowers, Freedom exhaust, and tour pack. It make zero difference to this motor...used 1/2 gallon more gas on fill up than my buddies stock injected 1300 Honda Interstate. Run only premium. Update: 4/24/2022 Still no issues, still pulls just as hard. ... show more
Reviewed in the United States on December 13, 2018 by sean martin sean martin
    • Eats crotch rockets for breakfast 😉
Color: Black Finish
Review Image by Nicholas Tagliamonte Nicholas Tagliamonte
Review Image by Nicholas Tagliamonte Nicholas Tagliamonte
My buddy built this ‘99 Softail from a box of parts and added the Ultima 127, I don’t know the specs on what else he did, but this bike is fast. Like “zero to a hundred in about four seconds” fast. No issues so far, but I’ve only put a couple hundred miles on it so far as it has been winter since I got it. Love it! ... show more
Reviewed in the United States on April 29, 2021 by Nicholas Tagliamonte Nicholas Tagliamonte
    • My advise is to run colder plugs to help keep the engine cool
Color: Black Finish
Review Image by tom moore tom moore
I bought this engine in late 04 or 05. This engine transformed my bike into a badass chopper that out ran crotch rockets
Reviewed in the United States on July 12, 2018 by tom moore tom moore
    • Buy nothing but a ultima big twin
Color: Polished Finish
Review Image by brynn&scottconwell brynn&scottconwell
Review Image by brynn&scottconwell brynn&scottconwell
Awesome motor..I've had my ultima 127ci custom sotail chopper since 06. and carb rebuild is all I've done to it...treated me very good ...one power house of a motor..the ultima motors are the best on the market
Reviewed in the United States on November 5, 2020 by brynn&scottconwell brynn&scottconwell
    • Spoofed? More like spunked on
Color: Polished Finish
I think that I would smoke this motor with my 80cc motorized bicycle. I be taking pink slips from seniors racing me on thier jazzy medical scooters. When they beat me i push 'em over and laugh at them. Real Talk!
Reviewed in the United States on November 20, 2019 by nate havi

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