557: Designed for Tri-Glide® models, this bolt-in cam, with it’s short duration, produces lots of useable torque.The camshaft’s stock base circle permits the use of stock pushrods.More power all across the wide power band, from idle to red line.475: A bolt-in replacement cam designed for riders with stock engines that want to eliminate the factory chain drive system, but are not necessarily looking for more power. Bolt-in stock.509: Designed as a bolt-in, high torque cam for 1999-'06 models. Bolt-in torque.510: Designed as a bolt-in cam for 88, 95, and 96 CID engines with compression ratios below 9.7:1, it is primarily intended for use with stock, un-ported heads. Bolt-in overall.551: Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression.180 psi cranking compression, no need for compression releases. This is a bolt-in cam set designed for stock or mildly modified touring bikes.Also fits ’14-’16 CVO™ Touring models with or without the use of a 58mm Throttle Body. Installation requires separate purchase of Performance Valve Spring Kit P/N 18013-03A. Separate purchase of Cam Spacer Kit P/N 25928-06 is recommended. The cam I first put in my 2015 CVO Road Glide Ultra was the SE-259e. The dyno yielded a 10 hp gain and 19.5 more foot pounds of torque.All EFI models require ECM calibration for proper installation. These kits contain five different spacers to achieve proper sprocket alignment. These pushed the torque curve too far to the right for the stock setup. The proof is in the throttle and the response in instantaneous.
However, if this part is not a direct fitment for your bike and a technician installs it--your warranty may be voided! I have FXST 2007 with PRO STAGE IV KIT P/N 27516-08E.Hoosier Harley-Davidson specializes in custom mapping using Screamin' Eagle race tuner and super tuner.We can tune your bike for any performance or exhaust combinations using Dynojets Dyno with an eddy current brake load control that can recreate the same real world conditions that you experience out on the road.Camshafts are a fundamental ingredient in the performance recipe, because they control the timing and duration of all major engine events.They are the primary means by which you can tune your engine’s horsepower and torque output. Had 3 fail in my 2011 cvo, and my 2015 cvo failed at 25000.A unique combination of lift, cam lobe duration and an enhanced cam profile ramp provides a performance boost you can feel. hi, the dyno chart say's 103HO, but it the chart for the 103 only.