Build it in stages
Stage kits, matched to your ski.
Tiered bolt-on packages, built and water-tested as one system. Set your machine and we'll show what bolts on — with exactly what's included.
Pick your ski to see your kits
01+2–4 MPHBest first upgrade
Stage 1
Breathe. The easiest bolt-on afternoon and a real first step — same quality as the big kits, at a first-order price.
What's included
Cold-air intake
Catch can / breather
Tune — where eligible
$1,150
02+5–8 MPHMost popular
Stage 2
Boost + flow. The complete bolt-on package — cold air, controlled boost, freer exhaust, dialed as one system.
What's included
Everything in Stage 1
Intercooler tubing + BOV
Rear exhaust
Stage 2 tune
$1,599
03+7–10 MPHTune-ready
Stage 3
The full build for riders chasing the most — every bolt-on, tune-ready. Built and verified per platform.
What's included
Everything in Stage 2
Full built setup
Tune-ready
Sample figures shown. Real GPS top-speed numbers come from GT40's own testing — your results vary with water, altitude, and load. Stage contents are matched to your platform/year — confirm your exact ski before ordering. Questions? Talk to the shop.