T124LC Stone Gray Engine With 585 CamsThis S&S 124 cubic inch T124 low compression Long Block engine fits 2007 '16 HD touring bikes except Twin Cooled models. Long Block engines do not include a fuel or ignition system, so If you already have a larger throttle body and EFI tuner, they can be used with this engine. The cylinder heads are specially machined to compensate for the longer cylinders so a stock length manifold or throttle body will fit perfectly, and the cylinder head breathers