Join Date: Apr 2012
Location: 9000 ft. ASL in Southwest Colorado, USA
Thanked 3,647 Times in 1,941 Posts
Those are the correct sprockets for the CBR250R.
So where are you located?... your first link is to a supplier in the UK, whereas the second link is for a supplier in the US. Not sure why that UK supplier is priced so low (and in USD), but the price of $21 USD in the second link is about average for that Renthal sprocket in the US.