The quick answers are below — for anything fitment-specific, email Mike directly and a real person answers.
Set your machine in the garage (make / model / year) and every part is flagged Fits, Verify, or Doesn't fit — straight from GT40's verified fitment data. When in doubt, email us your exact ski and year.
Stage 1 is intake, catch can, and a tune where eligible. Stage 2 adds intercooler tubing/BOV and a rear exhaust. Contents are matched to your platform and year — confirm your exact ski before ordering.
On 260/300 platforms we offer a send-in ECU flash. The 325 platform uses a speed-limiter delete (a full ECU tune isn't offered for 325 yet). Tell us your ski and we'll confirm what applies.
Free shipping over $500. 30-day returns on unused parts. Most orders ship within a couple of business days from Washington.