S&S CYCLE T124 High Compression Long Block Engine — 124", 4.125" bore, 4.625" stroke, 10.8:1 compression – 99-06 Touring, 00-06 CVO, 00-06 Softail, 99-05 Dyna

The T124 High Compression Long Block Engine is a complete long-block assembly that includes Super Stock™ heads, crankcases, TC3 oil pump, cam plate, and easy start 640 gear drive cams. 🔧

Special head machining allows compatibility with stock-length intake manifolds (S&S manifold size 410), and the cylinder heads are '99–'05 style; '06 models require '99–'05 offset intake flanges. 🛠️

Revised oil routing on '99–'06 Touring models eliminates the need for a separate oil line installation kit, and the breather vent bolt has been relocated to the stock position so stock-style air cleaner back plates bolt up easily.

This engine is made in the U.S.A. and does not include fuel system or ignition components. It is not compatible with Softail models. 🇺🇸