Hi Grahamm - the bike was supplied to it's first owner with the hyperpro spring fitted, and the original spring came with it unused and was consequently passed on to me when I bought the bike. I am not short, so instead of having the springs swapped over, I bought a used shock to see what difference it made. I couldn't tell the difference so decided to sell the my shock to recover some of the cost of buying the replacement. Clive bought the shock, so it might be worth you getting in touch with him if he swaps springs over and maybe sell you the Hyperpro one.