Screamin' Eagle Roller Rocker Arms

Part Number 17378-98




Unique roller-tip design increases strength and reduces valve stem side-loading and tip friction.

  • Built to handle cams with up to .700" lift in high RPM race application
  • Complete kit includes set of four

Fits '84-'99 Evolution® 1340-equipped models. '86-later XL and XR models and '99-'17 Twin Cam-equipped models. (Modification is required on Twin Cam rocker covers).

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  • Model
  • These Screamin' Eagle® products are 50-State U.S. EPA compliant for sale and use on all applicable vehicles, including those that are pollution controlled. See Genuine Motor Parts and Accessories or Screamin' Eagle Accessories catalog for fitment information. Screamin' Eagle Performance products are intended for the experienced rider only.
  • Warranty

    1 year limited warranty – Go to for full details
  • Requires ECM Calibration

  • Sold in Unit

    Set of 4
  • In The Box

    Set of 4 rocker arms
Roller Rocker Arms is rated 4.0 out of 5 by 1.
Rated 4 out of 5 by from Work Properly, but mind pushrod length on the 117CU kit These worked exactly as expected, however be advised that the "Perfect Fit" push rods in the 117"CI engine kit are not so perfect when installing these rockers: The rods in the 117" kit are short to the point the valves will barely open. For the 117" kit, get the adjustable push rods and set the valve lash the old fashioned way and you're golden. There is a bit more more valve train noise, which is mechanical music to my ears, others may disagree. 5 stars for quality, 3 for high cost, so 4 stars.
Date published: 2016-07-25
  • y_2018, m_2, d_26, h_20
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  • clientName_harleydavidson

Are bearrings in these rocker arms,if so what kind?

If you purchase a set of screaming eagle heads for a stock evo, which push rods do you recommend for heads and roller rockers and mild cam?
Asked by: 06sportster
No bearings It is a hardened bronze bushing.PushRods can't go wrong with Andrews Quick Change.
Answered by: Hawk52
Date published: 2017-01-01

what is the lift ratio?

Are they the same as stock?
Asked by: CaptAmerica
Hi CaptAmerica, They are the same as stock, which is also noted in the service manuals. Hope this helps!
Answered by: Wisco832
Date published: 2016-11-09
  • y_2018, m_2, d_26, h_20CST
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    Prices listed are generally the Manufacturer's Suggested Retail Price (MSRP), excluding taxes and shipping. Prices at local dealerships may vary. All online orders will be fulfilled and shipped by
    Harley-Davidson Motor Company as the agent for the Selling Dealer.