I just noticed this on Race bike Mart. Thought it might be of interest for you folks who have RS250s that will eventually need a crankshaft.

http://rgracing.fr/product-list/

Disclaimer: I have no affiliation with these folks, just passing on info.
_________________
MC28 SP

Hello,
Thank you for the sharing.

there is a solution for the new crankshaft at http://rgracing.fr - Discover the product launch video on the Gallery

Pre-Orders are Open for the first batch of Crankshaft and is right now in production for delivery in March 2018

Prepare now your next season for win in 2018 !!
Our crankshaft has been tested in real conditions of use to confirm the performances on a dynamometer and with run on challenging circuit.
During the test periode, we have do complete stress test in follow an very hard conditions protocol. Accelerating / braking programm,long accelerations to garantee endurance, up and down shifting with many over-rev.

It is a very complex piece that has taken one year of work to find solutions and to solve all the technical challenges. Design, methods of machining, processing and assembly are all aspects that we master to offer you the ultimate solution.
The disassembling and the reassembling with the new parts will be done in our workshop with total quality control.

Pre-orders at sales@rgracing.fr

Feel free to ask any questions, I’ll glad to help you.

Romain
owner