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Rear A-arms from RPM built for the 26 lb (12 kg) ARRMA Kraton 8S. That's a lot of truck for stock arms to handle, so RPM went with a triple-beam design that spreads impact energy across all three beams. Each beam measures 5/8\" (15.8mm) tall by 3/8\" (9.5mm) wide. The beams stiffen normal suspension movement but still soak up hard landings and crashes. The inner cross brace has been moved off the chassis, which eliminates the droop stop entirely. RPM's test truck bent its chassis at the droop stops, so the stop had to go.
