Shimano tiagra 4700 2x10sp braze on front mechsleek, balanced and consistent'. '.strtoupper('t')he tiagra 4700 series provides serious entry level riding performance with cascaded technology from dura ace'. '.strtoupper('i')t features an extra wide pivot link to increase rigidity while reducing flex for improved shifting response.features light action more ergonomic operation less chain drop new chain guide and fc gear shape with hg x chain braze on support bolt improves stability cassette compatibility 10 top gear teeth 53t maximum capacity 16t chain stay 61 66 degrees mounting braze on chain line 43.5mma 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products.buy shimano components from chain reaction cycles, the world's largest online bike store.