New Harley-Davidson SE 120R Race Engine

This fully assembled Harley-Davidson Engine named the SE 120R (120 stands for cubic inch and letter R for Race)) is designed only for off-road and racing use.

It is made available to Harley dealers for their racing customers wishing to compete on the racetrack with an affordable high-performance race engine. .The beauty of this SE120R engine is that it is designed to bolt-in directly to a customer’s transmission and chassis with no special fabrication required. It is comprised of a wide variety of Screamin’ Eagle and other components, all manufactured in the USA.

Engine produces 135+ horsepower, 6,000 rpm, 137 ft. lbs. of torque and 3,800 rpm at the rear wheel. These results were achieved on a 2009 Dyna using the SE 58mm Throttle Body, SE Heavy Breather, tuning with the SE Super Tuner, and Wegner’s Stainless Steel Stepped X-Pipe for an exhaust system. The system was kept in open loop, meaning Harley did not use the O2 sensors. The Harley SE 120T engine has a limited production run each year and is currently offered only in Twin Cam™ Alpha and Beta configurations. Fits ’06 and later Dyna  models, and ’07 and later Softail  and Touring models. At your Harley-Davidson Official Dealer.

Zipper's

54 Responses to “New Harley-Davidson SE 120R Race Engine”


  1. 1 PAUL Nov 20th, 2011 at 7:52 pm

    Will this engine fit on a 2010 Dnyna Fatbob? I was about to upgrade to the 103 cubic engine and stage II kit, from the 96 engine. Now I found out about this new 120R and I couldnt beleive what I was reading. I’m definately considering doing this after my deployment ends Please write back to me if you know something about this, and also would a dealer install it….

  2. 2 mike Dec 11th, 2011 at 10:57 pm

    I have a 2012 CVO Street Glide. I wont to out a 120R in the CVO but Harley wont build one in the correct color for the bike. The bike will nit look rigbt with a black engine case and a granite transmission. Wish Harkey would stel uo to the plate and build and sell me the engine in the correct color for my bike.

  3. 3 Brian R. Jan 24th, 2012 at 12:27 pm

    Have a “Jims” 131 cu. in. for sale – 2011 – brand new, still in crate with warranty. Bolt in for touring HDs. Can tell you it is an absolute rocketship. Torque and HP unbelievable. At 3500 rpms it is like afterburners kicking in. Heat not an issue.

  4. 4 Wilson Jan 28th, 2012 at 12:14 am

    I have a 2009 Fatbob CVO that had 29000 miles on the 110 motor gray. The 120r motor only comes in black, so I switched the primary over to black and chromed the transmission. I only have 200 miles on the 120, so no numbers yet. I have around 9000 invested.

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