Golden motor has a 60A BBSHD controller for sale.

[Retrorockit]

This is not anything like the Luna Ludicrous. It looks like a 60A shunt mod. 3000W @ 48/52V. All torque.
Maybe someone with more experience with this mod. will speak up and say what it does, and doesn't do for you. The only 60A battery is saw at Golden was 15Ah. Kind of small for an Amped up BBSHD. There's a steel gear in there too.

https://goldenmotor.bike/products/bafang-3000-watt-bbshd-torquex-controller?se_activity_id=168082211061&syclid=d7b5eo9ie13c73feeqd0&utm_campaign=Just+Dropped%3A+15%25+OFF+%F0%9F%94%A5_168082211061&utm_medium=email&utm_source=shopify_email