Our grandson REALLY loved itâit was a gift for his 22nd birthday. He races dirt bikes, and it was his first birthday since his dad passed in March. And his dad introduced him to dirt biking as a young boy. (And his 17-yr-old sister!) I recognized the shift pattern, as I rode a 100cc Indian trail bike in the 1980âs.đđď¸(Although mine was 1 down, 3 upâhis is 1 down, 5 up!) Thank youâI put it in a nice frame.