I spotted one in the parts bin the other day, brand new, hasn't even been mounted. I think it must have been a spare from when T-Rex Junior was racing a 24" DH bike, so it's never going to get used by us.I'm chasing a 40 tooth 4 bolt (104 bcd) sprocket for my 24" cruiser, to go on crupi cranks. Any help to where to buy some? I'm in a regional area so online is a must. Cheers for any help/advice or jovial ribbing