Ajs 18s Common Problems
Known issues to inspect before buying a used Ajs 18s. What to check and how much repairs cost.
Engine overheating due to cooling system failures
SERIOUSCoolant level, radiator condition, fan operation at idle
Fix cost: $200-$600
Electrical gremlins and ECU faults
MODERATEWarning lights, check full electrical function before buying
Fix cost: $150-$500
Brake caliper corrosion and sticking
MODERATEEven brake feel, inspect calipers for rust and leaks
Fix cost: $100-$350
Chain and sprocket wear from neglect
MINORChain slack, sprocket teeth sharpness, lubrication condition
Fix cost: $80-$200
Pre-Purchase Checklist
โPull full service history records
โCold start test for smoke or hesitation
โCheck frame for crash damage or welds
โVerify VIN matches all documents
Decent build, but maintenance history is everything