Kyosho IF347-126B Big Shock Piston 1.2x6 Hole

Shock pistons for Kyosho's Big Bore dampers, drilled with six holes of 1.2mm diameter, supplied two to a pack.

The piston is the disc that travels through the oil inside the shock body, and the total open area of its holes is what controls damping. Fewer or smaller holes restrict oil flow and slow the suspension down; more or larger holes let it move more freely.

Six holes at 1.2mm is one of the more restrictive combinations in Kyosho's Big Bore range. That makes it a choice for smoother, higher-speed tracks where controlling the car over big jump faces matters more than absorbing small chatter, and it is often paired with lighter oil to get firm high-speed control without the suspension packing down over successive bumps.

Getting piston and oil weight working together is the core of shock tuning, and Kyosho sells the IF347 series in a range of hole counts and diameters specifically so you can build a combination that suits your track.

This is the B revision, which supersedes the original IF347-126 with the same 1.2mm six-hole specification. Fitment covers the Inferno MP10, MP10 TKI3, MP10T, MP10e, MP9 TKI4 V2 and Inferno NEO 3.0 and 4.0 VE.