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Cartridge 2021 Husqvarna FE501S Cartridge
Increases low-end and mid-range power output
Improved intake performance by removing the genuine resonator BOX and adding an intake pipe
we were excited to dig in and create a solution with an already proven pedigree of high performance and quality
STILLEN went through a strict regimen of design
GTHaus OE-C (Original Equipment Control), Stainless Steel, with 4x90mm Round Split Tips for 2006 BMW 330i(BM3911905) 40120 Cartridge 2021 Husqvarna FE501S CartridgeContinuously innovating and progressing forward. the GTC(EV Control)and GTS (Ultimate Performance) were introduced, ultimately taking the place of the HP through GT2 for all newer model vehicles. The GTC, utilizing electronic valve technology to controlsound, back pressure. andoverall performance. became a single combined solution. enveloping everything from OEM all the way to GT2, a complete spectrum of sound and performance into one unit by the use