INJORA Brass Counterweight 104g Outer Portal Drive Housing for 1/10 RC Crawler Car TRX4 TRX6 Black Upgrade Parts,2pcs

For my TRX4 Sport I did brass portal covers in the front, brass diff covers front and rear, and Treal steel wheels. Since the sport does not have a heavy large body, I just did the brass portal covers in the front. https://www.amazon.com/dp/B0B5CCYMGT?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_66&th=1 https://www.amazon.com/dp/B0BRBH3F61?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_81

For my TRX4 Defender I did brass portal covers front and rear, brass diff covers front and rear, Treal steel wheels, and an aluminum bumper. I normally do not use this much brass, nor would I normally use an aluminum bumper, but since the Defender has such a large body, the extra brass and front weight helps. https://www.amazon.com/dp/B0B5CCYMGT?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_66&th=1 https://www.amazon.com/dp/B0BRBH3F61?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_81 https://www.amazon.com/dp/B07T9CC5HC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_71&th=1