It's around 26,400 miles.atgatt,
How many miles are on your bike now that you need to replace your chain and sprockets?
Someone should include this info on Ayers and Bike Bandit et. al. They generally are much less than the dealership price... but if you're not ordering $100+ worth of stuff you'll generally have to pay the cost difference in shipping, and you get to go without parts for several weeks.The OEM setup is 15/46. The parts are:
SPROCKET-OUTPUT,15T, Part# 13144-0024
SPROCKET-HUB,46T Part# 42041-0020
About $25 and $42 respectively from discount stores like Ron Ayers, bikebandit, etc.
Just make sure that when you tighten the chain, it's not too tight in that tight spot. If it has no free play at that tight spot, it could damage your CS bearing.