1+ Piston and liner  
2+ Piston ring kit  
3+ Gudgeon pin  
4+ Circlip  
5+ Connecting rod  
6+ Small end bush  
7+ Bolt  
8+ Nut  
9+ Bearing shell  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.