Skip to content
GT40 Marine
Cart
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 and cool the charge. Stage 1 packages the cold-air intake, catch can, and intercooler tubing path as the first bolt-on build.

What's included
Cold-air intake
Catch can / breather
Intercooler tubing
$850
02+5-8 MPHMost popular
Stage 2

Sound and flow. Stage 2 keeps the Stage 1 foundation, then adds the matched exhaust path as the next bolt-on step.

What's included
Everything in Stage 1
Ribbon delete
Rear exhaust
$1,250
03+7-10 MPHIntercooler step
Stage 3

Cooling plus the full bolt-on stack. Stage 3 adds waterbox and intercooler planning on top of the Stage 1 and Stage 2 hardware, with tuning handled as an add-on option.

What's included
Everything in Stage 1
Everything in Stage 2
Waterbox
Intercooler

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.