>>593449After doing some searching about, I don't think you're going to find it online, especially not translated (If you don't know Japanese).
Your best option is probably buying it off Amazon JP for ~$5 per volume, of which there are 39 in total.
There are some raws for the spinoff, Kirin - The Happy Ridder Speedway, on Nyaa, but only the first 5 volumes:
https://nyaa.si/view/779261Sorry, anon, but I guess it's time to learn Japanese or time to spend $200 on a motorcycle manga. Or both.
Always keep pic related in mind, if you're going down the first road, though.
