Crankcases & Parts

6 products

Our Crankcases and Parts range for Harley-Davidson covers replacement cases, case halves, repair hardware and internal components for Sportster, Dyna, Softail, Touring and Evolution Big Twin motors. Supplied by Iron City Motorcycles, an Iron City authorised HD dealer in Leeds, this section is led by S&S with high-quality performance cases, backed by Drag Specialties, K&N, Feuling and Trask Performance options. Whether you are rebuilding a tired Harley-Davidson bottom end, stepping up to a stroker kit or building a custom engine from scratch, correct crankcases and supporting parts are the foundation of a reliable motor. Our Leeds workshop team can advise on fitment, matching cylinder and flywheel assemblies, and torque specs. Every order ships fast from UK stock with expert aftercare. Browse the full range below.