Our guard is made from a special nearly indestructible polymer we discovered through testing the next generation of ballistic helmets for the Department of Defense.
The guard and frame are designed as a system to absorb most impacts of under 1000 lbs-f (4500 N).
The guard material is nearly impossible to fracture. In fact, it will neck down past machine stroke during tensile testing.
The guard can take many impacts before needing to be replaced from deformation due to sharp object impacts. All our test units are still in service after 1000’s of impacts.
The guard is also extremely slick so the chances of getting hung up are low.
Includes all mounting hardware.
Fits on the Rock Bottom frame for most bike geometries.
Weight 50g. 55g with steel hardware.
The Rock Bottom Guard is manufactured in Maryland, USA by Brutal Engineering. Material is our secret ballistic polymer which is notoriously hard to machine due to slickness, softness, and propensity to melt. Milled on our HAAS VMC.
Our guard material is notoriously hard to machine. Expect some marks on the guard surface from manufacturing. The guard will get beat up over time which is normal. Large lateral impacts may cause the guard to unseat from the frame slightly and is normal.
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