GPX & YX 146cc Top End KIT

57mm TB piston ,head and base gaskets and Aluminum Cylinder Bored to 57mm

This Kit is new and ready to bolt on:
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

Please select Piston type in comment box when ordering

TBWO417 High Comp Piston Kit
for stock 125cc & 140cc

OR

TBWO449 Very High Comp Piston Kit works with:
140cc stock head 27/23
Tb 30/23.5 Race head
Lifan 27/23 Head