Drum foto_0

 

 

 

 

 

 

SilverbackHD 35K Brake Drums

SilverbackHD 35K™ heavy duty brake drums are made to OEM standard 3500 grey iron, and state-of-the-art computer aided mill balancing for improved performance. This 3500 grey iron has a tensile strength of 35,000 psi, yielding denser iron to dissipate wheel end heat buildup and enhance braking performance.

Drums made to aftermarket standards, are manufactured with a porous 2,000 grey iron (with a tensile strength of only 20,000 psi) that retains heat due to a high content of micro-air pockets in the iron. This lower quality makes drums susceptible to fatigue, excessive wear and thermal shock.

The SilverbackHD 35K™ is engineered and manufactured with OEM-specified 3,500 grey iron to provide excellent torque in braking as shown in the Drum Effectiveness chart below. This exceptional 
performance was noted as the SilverbackHD 35K passed FMVSS certification.

chart2