Coppia valvole di scarico YAMAHA YZ125 03-04

Hi Sabina,

Short answer: no — these valves are made specifically for the Yamaha YZ125 2003–2004 YPVS and do not fit a GasGas EC-125 (2003).
The lengths, pivot diameter, profiles and actuator linkages are YZ-specific. The 2003 GasGas uses its own cylinder and power-valve system (pre-KTM era), so there’s no interchange with Yamaha parts.

If you’d like, we can source the correct GasGas OEM valves (left/right, pins, springs) or a complete kit.
Please send:

• the VIN/engine number,

• the exact model (EC/MC/SM) and year,

• and, if possible, the casting code on the cylinder.

We’ll check availability and send you the right references and price.

Hi, no they are only compatible from 2003 onwards

Hi, no the valves only fit on 5UN-11311 cylinders