- First Name
- Curtis
- Joined
- Mar 21, 2021
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- Silverdale, WA
- Vehicle(s)
- G2 Raptor, GT350, Land Rover SERIES and DEFENDER
- Your Bronco Model
- First Edition
- Thread starter
- #571
Great question!Looking much better now. Curious about the longevity of the clamp design though.
The clamp brackets are 6061-T6 billet aluminum, along with the STIRRUP itself. 6061-T6 is rated at ~42,000 psi tensile strength. Two M10 stainless bolts mount (100,000 lb tensile strength each) the STIRRUP to the clamp brackets. Four M6 stainless bolts provide the clamping force for the brackets to the OEM rail. The M6 bolts are 70,000 lb tensile strength each. Billet aluminum is what's used on suspension parts for Baja 1000 Trophy Trucks, racing engine blocks and heads, and aerospace load bearing applications. The STIRRUP assembly is greatly overbuilt for what we'll be using it for. We're only going to throw mere hundreds of pounds at them.
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