Eliminates the lower roller reducing weight, noise and complexity Chain rides a slider w/ o-ring for secure retention and quiet operation Aluminum inserts in chainring bolt holes to prevent damage
SPECIFICATIONS BCD: 4 x 104 mm Color: Black Weight: 177grams Material: Aluminum Model: P20S Mount: ISCG-05 Range: 32-34T Speeds: 11 UPC: 811074012901