Join Date: Jul 2018
Location: Los Angeles, CA
Yeah I wouldn't go more than 5mm, especially with the 55 rear. If it starts to get a little twitchy look into getting a steering damper/stabilizer. I have the GPR and am very happy with it.
That said, make sure you sag, spring rate, and damping is right, because that's going to vary the steering geometry greatly if you have excessive sag and dive.
2018 Kawasaki Ninja 1000 - Akrapovič Racing Line Full Exhaust; BMC Air Filter; Corbin Saddle; CRG LS 2.2 Mirrors; Driven Grips; Driven PAIR Block Off Plates; Dunlop Q3+ Tires (190/55 rear); GPR V4S Steering Stabilizer; Kawasaki Frame Sliders; Mirror Block Offs; Moto Dynamic Fender Eliminator; Moto Dynamic Integrated Taillight; MRA Racing Double Bubble Screen; ProGrip Tank Pad; R&G Racing Engine Covers; Speedy Moto Tall Boy 50mm Clip Ons; Woolich ECU Tuning With Race Tools And Quickshifter.