True for Martin maybe, but not the OP who is going from an L4...
I wouldn't personally unless there's something wrong with your bike or you're still on PCP and don't want to pay the lump sum...
If you own the L4 outright then get your money's worth
If you were wanting to go to the 1000 on 0% then that's a different question (though Kwackboy's comment about front end/spokes still stands)