No it didn't... and yeah I'm going up 1 in the back... I don't really need to... but I wanted to replace the chain and felt like change'n out the sprockets at the same time... Cycle sector had a deal on renthal sprockets and DID ERV3 chains... but didn't offer the rear sprocket in the same size as stock... so I went 1 tooth higher... no big deal... shouldn't effect my MPG much... and not like I'll be winding this thing out top end either