The consequences of using low-quality, low-cost spring brakes: A look at the critical issues

Fortunately, owners of new vehicles can rest assured that their vehicles will stay in place, as OEMs must certify that their braking systems meet Federal Motor Vehicle Safety Standard (FMVSS) 121 parking requirements. However, no such standards exist for aftermarket products, leaving the parking ability of low-cost aftermarket replacement spring brakes to chance.

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