$759 will not represent an investment that will change your life, but it is a step forward towards achieving more income, which may generate 3 times your investment in the future.
Is the bike you are looking for a motorcycle or a regular bike, because the price of bikes on average here ranges from $200 to $800, and 750 will definitely buy you a bike, or you can wait until the Bitcoin price is 60,000 and you get your capital back and a bike.
I believe the bike he shared the picture of in the OP is what we refer here as Power bike, From what I know, power bikes can be referred to as high performance bike, and they are usually very much more expensive than $200 to $800 you mentioned. Though how expensive it is usually depends on the make, and the quality of the bike, as well as the performance.
Like myself, I bought one regular bike last year for around $600, though not the kind is sophisticated bike like the OP wants, I would personally refer to mine as a motorcycle.
What I will really advice OP is that, Bike is not the most important thing in life, no matter how much he loves it, he's investing in Bitcoin should be to change his life financially and not just to buy bike, Bike is a liability, he already invested $750 in bitcoin, he should try and invest even more in preparation for the coming halving and possible bull run, if this investment triples in growth, he should invest in a good business rather than use the entire money to buy a bike which will only take money away from him going forward.