416-17OS HARLEY JD OVERSIZE Left Case Race & Thrust Washer. 1917-1924 All Twins R These are the large inlet

These are the large inlet rocker arm bolts for the 1929 J & JD's

(  Part # 0113 is the Nut )

3 5/8" Long   1/2"-28TPI

Rear Spring Perch Casting for 1925-1929 Harley Davidson J and JDs

416-17OS HARLEY JD OVERSIZE Left Case Race & Thrust Washer. 1917-1924 All Twins R These are the large inletOversized Left Case Race & Thrust Washer. Oversized +. 002" on the OD Fits all 61" & 74" J, JD, & F motors 1917 1924 O. D. 2. 002" I. D. 1. 5000" Made from 52100 high quality aerospace timken bearing stock material. These will allow the engine builder to go back to standard roller bearings in an engine rebuild on a JD or F style motor.