These high compression pistons for 2007-'17 HD® CVO 110 models except 2017 and Twin Cooled® touring models feature a 12.5cc raised dome to achieve a compression ratio of 10.6:1. Higher compression is a key factor in increasing performance, but it's only part of the solution. Not satisfied with 86 horsepower from your CVO 110 engine? Neither were we! Fortunately, we can show you how to make that big hog really run. Here's how. Install an S&S® performance exhaust and air cleaner - a must for any performance upgrade. Install a set of S&S® 585 bolt-in cams and tune the EFI system - produces over 107 horsepower. Increase the compression ratio from the stock 9.3:1 to 10.6:1 with these S&S® high compression pistons - brings the horsepower up to 114.
*Is not compatibable with Twin Cooled® models
DISCLAIMER:
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. NOT LEGAL FOR SALE OR USE ON ANY EPA POLLUTION CONTROLLED MOTOR VEHICLE.
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Way beyond expectations
Like anyone else I wanted more power from my 2009 110 CVO. I have the S&S 585 cams which gave a great boost but decided to try these high compression pistons. My setup now is a SE Ventilator breather with Bassani road Rage 2, 2 into one header and exhaust with these pistons. I took it in after the break in perion for a full dyno tune. Wow what a difference. My numbers now are 116 peak HP and 126 Lb torque. This bike practically launches now when I take off. I do have some pinging I need to address at high loads (Cranking the throttle wide open) but I think that may have been a choice of gasket thickness. I highly recommend these.
