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

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Price incl. VAT, plus delivery

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) 

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Browse these categories as well: YX LIFAN 88/110/125/140cc, TB PARTS U.S.A.