Shimano Tourney / TY RD-A070 7-speed road rear derailleur, with mounting bracket

Name: Shimano Tourney / TY RD-A070 7-speed road rear derailleur, with mounting bracket
Brand: Shimano Tourney / TY

Shimano Tourney / TY

Shimano 7-speed road rear derailleur with mounting bracket RD-A070 ADPT\n\n--\n\nSpeeds: 7-speed (for road bikes)\n\n--\n\nMounting: Comes with mounting bracket (likely a direct mount or built-in hanger type)\n\n--\n\nMinimum top sprocket: 11T\n\n--\n\nMaximum low sprocket: 28T\n\n--\n\nTotal capacity: 33T\n\n--\n\nCage type: SMARTCAGE (11/13T) \u2014 compact short cage design, typically quieter and neater, with 11T top pulley and 13T bottom pulley.\n\nCompatibility:\n\nThis derailleur is generally compatible with:\n1. Cassette:\n\n--\n\n7-speed cassette with a range like 11-28T or smaller (e.g., 12-25T).\n\n--\n\nMax sprocket (largest cog): 28T\n\n--\n\nMin sprocket (smallest cog): 11T\n\n2. Crankset (for calculating total capacity):\n\n--\n\nTotal capacity = (large chainring - small chainring) + (large rear cog - small rear cog)\n\n--\n\nWith a 33T capacity, typical setups could be:\n\n--\n\n50/34T front with 11-28T rear (gives 50-34 = 16 + 28-11 = 17 \u2192 16+17 = 33T \u2192 maxib