my gears are very stiff on my bicycle?

They may need to be adjusted... do you mean it's hard to shift or it's hard to pedal?
 
Most likely going to be the cables - they can get all rusty and stick to their tubes in rainy weather... You can either spray a load of WD40 on it or have the cables replaced...

You can of course take them all to bits and re grease everything...
 
Back
Top