If you need a high speed and high power winch for racing , I think you must look into racing equipment only .
Forget the consumer base products.
I remember an Australian company red winch that does these kind of winches .
The Hornet2 is the pinnacle of competition electric 4x4 winches, engineered for recovery vehicles and Motorsport excellence. With a powerful 14hp motor arrangement, CNC-machined aerospace-grade aluminum body, and an advanced air free spool and air brake system, it delivers unmatched control...
redwinchqld.com.au
As a professional product you can choose the ratio /speed , drum size , capacity of the line ecc.
Not cheap , but if you are in racing nothing is cheap .