Quick view ZF Dual Red Rear Sprocket | Pitch: 428 | Teeth: 56 | ZFD-1140-56-RED MSRP: £32.46 The ZF dual chain wheels are among the top quality and technically advanced chain wheels in the world. The secret is based on the combination of the durability of steel and the lightness of duralumin. This aluminum alloy is characterized by... Add to Wish List Add to My Wish List Create New Wish List