Yeah, but WHY do you have to spend if you want speed.

My Yamaha TZ250 GP bike is speed but it's parts pricing is all over the place. Some parts cheaper than the road equivalent some parts dearer.

Silliest parts pricing was the chain adjusters, left hand side was about $34 the right hand side was about $134. They were idendical in all respects except the left one ($100 cheaper) had one MORE machining operation which made it unusable on the right hand side. They charge $100 more NOT to machine a certain bit of metal off it??

Same with cars, with driver side door handle prices compared to passenger side prices. The driver side door hand must be faster and have more performance eh???

No one is arguing that F3A makers are turning huge profits, but the F3A stamp certainly adds a premium to the price (no difference to designer label clothes manufactured in China or Peru I suppose).

Performance costs money is true, but it doesn't fully explain why.