I just picked up my bike with a Trinity 421 powervalve (cheetah). What size jets do you run in powervalves? What is a good compression for all around duning? I prefer to use 100 octane gas. Also, I ate up an aluminum rear sprocket every 2-4 hours. Any recommendations on a good rear sprocket? Has anyone experienced this? What is good all around gearing for the dunes using 20" Sand stars?
Thanks,
Doc