TBParts - 613 52.4MM High Comp Piston w/14mm Pin Kit
GPX Lifan YX Piranha

Stock Bore High compression piston kit w/ 14mm wrist pin
Application:

• SDG 125
  
• RCM 125
  
• Sikk MX 120
  
• Lifan 120 
  
• Zongshen 120
  

Key Features:

• Piston kit feature valve reliefs for Lifan/YX  Big Valve Heads 
  
• Piston kit will also work with high lift/duration race cams
  
• Compression ratio of 12.5:1
  
• 10% gain in power by installing it in place of your low 9:1 stock compression ratio
  

This is a drop in replacement piston, no boring required