What causes Throttle bodies sync drift causing rough idle on the Kawasaki Zzr1400?

Idle quality, hesitation at low RPM, surging Estimated fix cost: $150-$300

What causes Stator and regulator/rectifier failure on the Kawasaki Zzr1400?

Battery voltage at idle, flickering lights, dead battery Estimated fix cost: $300-$600

Oil residue on fork legs, soft front suspension Estimated fix cost: $200-$400

Rattling on cold start, pre-2012 models especially Estimated fix cost: $100-$250

Known issues to inspect before buying a used Kawasaki Zzr1400. What to check and how much repairs cost.

MODERATE

Idle quality, hesitation at low RPM, surging

Fix cost: $150-$300

SERIOUS

Battery voltage at idle, flickering lights, dead battery

Fix cost: $300-$600

MODERATE

Oil residue on fork legs, soft front suspension

Fix cost: $200-$400

MODERATE

Rattling on cold start, pre-2012 models especially

Fix cost: $100-$250

☐Check service history, especially valve clearances

☐Test charging system voltage at 3000 RPM

☐Inspect fairings for crash damage or repairs

☐Verify coolant condition and no head gasket issues

Very reliable, issues mainly on neglected examples