JT Rear Sprocket 1489.41 - Kawasaki: 11-17 Z1000 SX GBF, GCF, GDF, LEF, LFF, LGF (ABS); 20 Z1000 SX Ninja; 08-10 ZX-10R Ninja (ZX1000 E8F -FAF); 02-03 ZX-9R (F1H, F2H) C10 1" ID X 1 1/2"

1" ID X 1 1/2" OD

the main improvement in design is the 1958-1965 style flywheel assembly

Forged billet aluminum backing plate features patented Big Sucker™ hidden breather technology and a radius air inlet for smooth airflow

Outside diameter is 145mm(about 5 3/4")

JT Rear Sprocket 1489.41 - Kawasaki: 11-17 Z1000 SX GBF, GCF, GDF, LEF, LFF, LGF (ABS); 20 Z1000 SX Ninja; 08-10 ZX-10R Ninja (ZX1000 E8F -FAF); 02-03 ZX-9R (F1H, F2H) C10 1" ID X 1 1/2"JT Steel rear sprockets are manufactured using Japanese C49 high carbon steel. Designed to minimise weight and maximise strength. Accurately machined to achieve balance and a perfect fit and chain alignment