Product Description
ULTRA PRO Solid Roller Lifters
When they say 100% USA made they mean it. The Ultra Pro lifters start from USA made steel and are fully machined, ground, and assembled here in the USA. They start with 8620 tool steel bar stock and machine the bodies down to within .003” of diameter. They are then heat treated to Rockwell specifications. The bodies are then center-less ground to tolerances of +.0003” and - .0000. They also hold concentrically to this, Many others can’t say that. They then polish the body to an RMA of 2. The axle and wheel are out of 9310 and 8620 tool steel also. Rockwell on the wheel is held to 60-62 on the C scale. The Ultra Pro series are designed to be serviceable and can be rebuilt. Also Sold in set of 8 pair and Single Pairs.
FORD Performance Solid Roller BB 429-460 .875D. .750 WHEEL. T/B U/P P/O
