Motorcycle Front Rear Sprocket 520 Chain Set Kits Fit For Kawasaki Z750 ZR750 Z800 ZR800 2004-2016 Fits Z750 ZR750 Z750R Z750S ZR750S 04-12 Z800 Z800e ZR800 13-16; 520 pitch mid-size naked motorcycle drive system CNC machined inner splines pre-drilled mounting holes; direct bolt-on installation without or grinding components Smooth curved tooth profile reduces chain friction running vibration; provides stable torque output for daily commuting highway cruising treated carbon sprockets with thick reinforced tooth roots; wear resistance under medium-displacement high-torque operation Manufactured to OEM dimensional standards with consistent tooth pitch hole layout; tight chain sprocket meshing to extend full drivetrain life