Description
These are optional 1.3mm x 8 hole Shock pistons for the Kyosho Inferno MP9 and the big bore shock sets for the MP777 STRR, STR and WC. These have special angled holes drilled in them to change the action on the piston in the shock trough its stroke. Creates more dampening in one direction and less in the other. These will give you more "pack" than the straight holed versions. Generally they have more resistance to compression at high speed than the straight cut versions.
These are now the stock pistons that come in the MP9 TKI2, WC and TKI3 for the front shocks in the kits. Most racers will change to the 1.3 x 8 hole straight cut pistons because in most cases they work better.