True Type 4 diameter drop-in HD spring sets with titanium retainers, and dual sets that require boss narrowing. The retainers fit stock locks.
Outer: 34mm O.D., 25mm I.D.
Inner: 23.5mm O.D., 17.7mm I.D.
Pressures:
Single Dual
1.550" install: 121lbs 143 lbs
1.050" (.500" lift) 245 lbs 306 lbs
.950" (.600") 303 lbs 368 lbs
At 245, the singles should handle most applications up to 6,000 rpm.
And billet CNC oil pumps:



