Three motorcycles, a mountain bike and two motorcycle crash helmets were stolen from a shed in Jubilee Drive, Walgrave, in the early hours of June 6.
A large green jerry can marked with the numbers 60/1 was also taken.
One of the motorcycles is a red Adult Beta RR 2T 300, registration Number KU65 FHL, and the other a green Kawasaki KX250 X-Cross.
The third is an orange child’s 50cc KTM Pro Senior decorated with ‘Danger UK’ graphics and a number 7.
The mountain bike is a Black GT model.
The photos with this story are of a child’s motorcycle similar to the one stolen and of the actual stolen adults Beta motorcycle.
Anyone with information can contact Northamptonshire police on 101 or Crimestoppers anonymously on 0800 555111.