Derailer - Rear - Shimano ESSA RD-U2000

Shimano rear derailleur ESSA RD-U2000, 8 speed Really neat new super value product from friends Shimano.  'Sposed to be 1-by only but we're going to test it with front derailleurs, too. UPDATE: we tried it and it doesn't work well enough that we'd recommend using it with a front derailer. Use this rear derailer with the 8 speed 11-45 cassette. Shifters: any friction or any new or old 8 speed index will work.    erdu2000 rdu2000 CAGE LENGTH GS/Medium TOTAL CAPACITY 34T MOUNT Direct attachment (conventional) NUMBER OF PULLEY TEETH 11/11 MAX LOW SPROCKET 45 MIN LOW SPROCKET 45T TOP NORMAL SPRING TYPE Shimano Shadow RD MAX FRONT DIFFERENCE 0 CABLE ADJUSTER x COLOR SERIES COLOR SERIES ESSA GENERATION U2000 REAR SPEEDS 8