Motion Pro Push Rod Tool The Motion Pro Push Rod Tool is engineered for fast, safe service of Harley-Davidson collapsible push rod tubes on Twin Cam and earlier models. Purpose-built fit: Flat end slides under the cylinder head; cupped end centers over the tube bell to compress the spring cleanly. Easy access: Compresses the spring for quick removal/installation of the spring cap retainer. Protects parts and hands: Avoids cut knuckles and prevents fin and engine damage versus prying with screwdrivers. Smoother operation: New, improved design with a shoulder-bolt pivot for enhanced durability and precise movement. Ideal for home mechanics and professional techs seeking reliable, repeatable results and reduced service time. Compatibility: Harley-Davidson Twin Cam and earlier models with collapsible push rod tubes.