Brand New Complete rear brake master cylinder caliper assembly for 70CC 90CC 110CC 125CC 140CC 200CC dirt bikes, pit bikes with 15mm rear wheel shaft.The brake comes with 1 pair of free extra brake pad. <br><br> Package includes:<br><br> Hydraulic brake master cylinder<br> Dual pistons brake caliper with a fresh pair of pre-installed brake pads <br> Brake fluid hose<br> Brake fluid reservoir<br> Mounting plate<br><br> Common applications on 70cc - 200cc Pit Bikes Dirt Bikes with 15mm rear wheel shaft:<br><br> SSR<br> Lifan<br> Coolster<br> Baja<br> SUNL<br> Roketa<br> Jetmoto<br> Apollo<br> Pre-bled for easy installation.<br><br> Please pay attention. There are 2 sizes of shaft diameter 12mm(0.47") and 15mm(0.59") for 70 - 200cc Dirt Pit Bikes. This brake assy with a bracket will only fit for 15mm rear wheel shaft, NOT fit 12mm rear shaft. We also have brake assy fit for 12mm shaft. Please take measurements and confirm before purchasing.