Race Series solid lifters. +.0015" OD

+0.0015" Outside Diameter (0.835 - 0.844). Standard diameter is 0.842" to 0.8425" OD. Custom solid (non-hydraulic) replacements for the stock 18538-99C Standard and 17900022A High Capacity hydraulic lifter. Designed for engines with radical valve spring pressures, large lift camshafts and high RPM. Where hydraulics can no longer take it, solids are used. Adjustable pushrods and correct hand pre-adjustment is required. Recommended for only those that know exactly why they don't want a hydraulic operated lifter. Made from hardened steel, CNC machined and precision ground with 0 .700" diameter rollers. Standard pushrod seat height. Note: Feuling recommends the use of 707310 Race Series adjustable chrome moly pushrods, or comparable heavy duty adjustable pushrods. USA made