Tied for last, but still a blast

Harley-Davidson understands the importance of motorcycle customization. That’s why it’s keen on getting a slice of the pie with its Screamin’ Eagle Slip-On Shorty Dual Mufflers. Designed in-house at its Wisconsin factory, Harley’s aftermarket arm offers OE-style fitment with added performance over stock.

The Screamin’ Eagle pipes have a traditional tubular design without taper. The mufflers are a little longer, which could be because it retains a catalytic converter (non-removable) similar to the Akrapovic model. Each pipe features a matte black finish versus the chrome used on most others. Fit-and-finish is adequate, but the welds aren’t as nice and the paint inside the tail pipe isn’t sprayed uniformly. These design features compromise quality and result in the last place score in that category.

The mufflers are a one-piece design and attach directly to the header and stock cross-over tube. Installation was the easiest yet, and everything lined up perfectly with no guess work. On the scale the pipes weighed in the heaviest at 11 pounds, 7.4 ounces—over a pound heavier than the class-leading BUBs.

Sound-wise the Screamin’ Eagle setup offers refined harmonics that aren’t a big departure from stock – especially at idle. In the sound test, we recorded the same decibel reading as stock (86 db). Rev up the engine to 2,950 rpm and it sings to a tune of 104 db, which again was the quietest in the test.

Results of repeated dyno runs revealed that pipes offer the most immediate torque. The Bassani pipes eventually surpass it around the 4,000 rpm mark, but the Screamin’ Eagles are no slouches, cranking out the second highest peak twisting force figure of 71.44 lb-ft at 3,900 rpm (less than one lb-ft behind the class-leading Bassani). While bottom-end horsepower figures were good once the engine revs climb, power fell off faster than the others with only 63.7 hp available 500 rpm shy of redline. That’s three to five ponies down on the other American-made pipes, but still nearly five more than the expensive Akrapovic.

Overall, the Screamin’ Eagle pipes are a more moderate way to add some pizzaz to your motorcycle. We liked the added engine torque and the way they elaborate on the Sportster’s classic unmistakable exhaust note. However, the styling is too plain and the build quality could be better. It’s for these reasons that the Screamin’ Eagles tied for last place in the test.


"These pipes sound most similar to stock. They emit a deeper tone that retains that signature Harley-Davidson ‘potato-potato’ sound. Jetting was pretty good, but there was some backfiring under deceleration; however, it wasn’t as much as some of the others. The powerband felt a little snappier compared to stock but not as fast as say the BUB pipes. Overall this setup is for someone who wants to retain that signature Harley sound without changing the performance or look of the bike."

Be sure to check out more great motorcycle exhausts at J&P Cycles!