IN-LINE Machined from ALCOA 7150-T7 Billet Extrusion; the in-line grain runs parallel to the rocker's length, adding 6 times the fatigue resistance over conventional "cross-grain" SILHOUETTE extrusion used by other stud mount and shaft system rocker arm manufacturers. This has always been the only method of manufacturing for any MILLER MID-LIFT rocker, since 1974.

The Miller PRO-STUD™ are the ultimate in STUD Mount rocker systems. They utilize many innovations not found on any other rocker arm. Miller's exclusive 7/8" RIFLE-DRILLED, DUAL-FLAT trunnions; FULL compliment needle bearings; DUAL-RIB Beam and multiple Patents Pending Measuring faces, for direct reference to the valve spring retainer for the ultimate precision of INSTALLED Geometry; or from the rocker stud, using our Patent Pending "G-TooL™. No other brand of stud mounted rocker arm comes close to delivering this level of precision, strength, light weight and user innovation. Period!