TBParts - 146cc Bore kit HC Piston
GPX Pitster YX Piranha

TB GPX & YX 146cc Top End KIT

OD of cylinder skirt is 59mm

Meets or Exceeds OEM Specifications.

Key Features:

• All aluminum cylinder with steel liner
  
• High compression piston
• Gasket kit included

Recommended:

• Sta-bil fuel stabilizer - W-57-1129
  
  

This Kit is NOT for Stock Small valve heads
(Small valve GPX 124cc - Jialing 124cc ect)

ONLY for use with 23/27 Big Valve heads 
(Piranha YX140cc - Lifan 125/140cc) 

Application:
(With Proper Big Valve head)

• Pitster Pro 125 
  
• GPX 124cc 
  
• THUMPSTAR 124cc
  
• BRAND X MINI 125
  
• UPC 125
  
• EVOS 
  
• KRP
  
• OGM/YX 140 (not steel Cylinder lifan type) 
  
• GPX 140
  
• Pitster pro X2 or X4 140cc
  
• Piranha 125 & 140 (not steel Cylinder lifan type)
  
• Xtreme 124cc Typhoon
  

For use with Lifan 27/23mm Head , Piranha YX 140 27/23mm head or Other Big Valve heads

Kit Includes:

• TBW0601 - Cylinder
• TBW0424 - Gasket set
• TBW0823 - Piston
• TBW0862 - IF running TB V2 Head (gasket set)