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Screamin’ Eagle® Upgrade for 117 – High Output

Direct Drop-In (Existing Cylinders)

T-Man Performance offers a high output kit for the customer looking for a substantial increase in their 117 Drop On Cylinder Kit from Harley-Davidson. This kit is designed to use your existing 117 cylinders from Harley. Our 10˚ angle top piston is a direct drop in on your existing cylinders. (Please note – a head modification is required to accept this piston.) It can be used with your stock head or paired with our Street Performer Head and our 662-2PS or 680PS cam. We have produced substantial gains in horsepower and torque on our dyno with the proper pipe and oversize throttle bodies; we’ve seen 130/135 on both sides (ie, horsepower / torque).

Price does not include cylinders. T-Man Performance can provide cylinders, if needed at an additional charge – please call for details.

NC State Sales Tax will be applied.

$ 395.00 (Pistons Sold Separately)
(includes machining for cylinder head)

Please contact us to order.



117″ Piston Style – 10˚ Dome

 Engine Size Chamber Design Kit Number Finished Bore Size Dome Volume Complete Piston Set Weight Available Oversizes Recommended Finish Grit Deck Height
117″ 10˚Dome TMP3250 4.125″ 15cc STD Only HD Cylinders 1.084″

**Pistons designed for Harley-Davidson Tool Steel Cylinders**