I asked Spring Mountain and another dealer some of these questions, and this is what I heard. Don't quote me on any of this: What type of fuel do...

@charleyhradicalsportscarregistry-com Wow, sales are brisk. You should go into the shirt biz. 😀 But seriously, thank you for doing this for us.

@trakmnky another good question. Radical says this: This high-output engine is integrated with a new Hewland GT3-derived six-speed gearbox. The...

I was told they are exactly the same tire spec and compound as the Radical tires, however they cannot be used for Radical Cup racing.

If you have not purchased fuel jugs yet, take a look at Risk Racing EZ5 jugs. They are 5 gallon yet they take less floor/rack space than the VP racin...

Congratulations Kevin. I just started last year, so I won't have all of the answers for you, however it is not that hard to piece together the tools ...

Getting end of season work done: Engine refresh and conversion from short to long stroke GDU refresh New uprights 4 corners ECU battery replace...

Will the SR10 be raced in Radical Cup? Oh, and how fast is an SR10 compared to an F3? Just curious.

If flushing gear oil from the oil cooler, does this require adding oil somewhere besides the top of the GDU, or a procedure to make sure the GDU ends ...

@dwang2000 I hope to see you at VIR or at a track in Southeast next year. Please drop by and say hello. I dropped my car off at WISKO yesterd...

Thank you for the pictures -- very compelling evidence to keep an eye on the uprights. Radical should provide an update/fix for these.

@azwcat -- do you have a photo of the broken upright? Is there an area on the uprights that reveal stress and imminent failure? This is one of ...