Crankarm Length - 170mm vs. 172.5mm
I just ordered a new Ultegra crankset. I ordered a 172.5mm, but received a 170mm. How much of a difference will this make? Should I go through the hassle of trying to return it? I've been riding a 172.5mm for years (it's what came on my bike), am just a touch under 6ft tall, and don't know my inseam. I like long endurance rides and hills. Thoughts? Thanks.