Hard Green Power Valve Spring for KTM/Husqvarna 250/300 2005-2023 - 54837072100 transmission including various special editions like

including various special editions like the Six Days

It is highly recommended to bleed the hydraulic system after installation to remove any trapped air

and 500 EXC-F and XCF-W four-stroke models

500 EXC-F SIX DAYS (EU)

Hard Green Power Valve Spring for KTM/Husqvarna 250/300 2005-2023 - 54837072100 transmission including various special editions likeThis genuine OEM Power Valve Auxiliary Spring is a critical component for tuning the exhaust control system on your 2 stroke engine. The "Hard Green" tension allows riders to customize the power delivery, typically providing a more linear and controlled opening of the power valve for better traction. Compatible with an extensive range of 250cc and 300cc models from 2005 to 2023. It fits KTM 250 300 EXC, SX, XC, and XC W models, Husqvarna TC 250, TE