Hi, our Vex V5 team uses SMC pistons on our robot (part numbers linked below). Recently at a competition, we were told during inspection that the pistons were likely illegal since the Vex stickers were not visible on them. In previous years, they have never received that feedback. So before we go…

see this [image] VEX V5 Robotics Competition - Flex Wheels Update & Legal Parts List VEX Robotics Competition Discussion VEX V5 Robotics Competition Competitors, Referees, Inspectors, and Others – As you may have recently seen, the webpage for VEX Robotics Flex Wheels has…

also this. https://kb.vex.com/hc/en-us/articles/17984679227156-Legal-Pneumatics-for-Use-in-the-VEX-Robotics-Competition-VRC

Thank you @jpearman for the quick responses. Looking thru those lists, seems like the SMC NCJ2D10-200 piston is legal. We would appreciate further clarification on the following questions - Is the 1" piston (NCJ2D10-100) from SMC not legal since it is not listed in the links you shared above (ev…

[image] vcalc10001: further clarification on the following questions The 1" stroke air cylinders from SMC are not legal simply because they’re not on the list. It doesn’t matter that the Vex air cylinders come in that size, that in its self does not make a legacy component legal. There is n…

[image] vcalc10001: The “rule” that the Vex sticker needs to be visible on the pistons. Is there such a rule? (because we cannot find it). This is not a rule, make sure you have the pneumatics rules on hand to show the inspectors if they say that you need to have a vex sticker.

Legality of SMC pistons for Pushback

VEX V5 Robotics Competition V5RC > Push Back (25/26)

jpearman January 21, 2026, 9:39pm 2

see this

line 394 in the spreadsheet.