Callies has once againestablished a new standardfor lightweight crankshafts.Magnum XL lightening profilesresult in crankshafts havingextremely high strength toweight ratios. Material iscarefully removed fromnon-stressed areas of eachshaft to eliminate parasiticweight. The Callies Magnum XLprofile is effective atminimizing windage within thecrankcase atmosphere. Oilcontrol is improved by notrelying on counterweightundercutting to eliminateweight.
All Magnum XLcrankshafts feature theCallies Ultra-Case nitridetreatment. This heattreatment method produces adeep case that enhancesstrength while creating anextremely hard load bearingwear surface. The Ultra-Caseprocess generates a layer ofhardened steel deep enough tomaintain its integrity evenafter a -.010 regrind.
Each main and rod journal isdrilled for weight reductionnse improvement.
