TBW9066 TBParts - 146cc Bore kit HC Piston GPX, YX 140cc

TB GPX & YX 146cc Top End KIT

OD of cylinder skirt is 59mm

Meets or Exceeds OEM Specifications.

Key Features:

• All aluminum cylinder with ceramic plated bore for greater heat dissipation 57mm (78mm tall)
• High compression piston
• Gasket kit included

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)