Originally Posted by
kyoshoracer77
part is the part number on them???? or are they custom drilled pistons??
Ghea has theirs, not sure of the part number but you can find it on AMain. Losi 55's are basically 4x1.3. They are just a hair different.
Drill Bit size Decimal value
1.3mm 1.3005
55 1.3208