Kawasaki Mule Pro 4" Portal Gear Lift


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Gen 3 Portals are Geared for All
SuperATV’s GDP 4”
Portal Gear Lift for the Kawasaki Mule Pro is geared for all. What do we mean
by that? Our 4” portal lift is available with 15% or 30% gear reductions. You
get the gear reduction you need for the ride you want.

Perfect for Mud
Get a 30% gear reduction and start
muddin’. With a massive boost to torque, you can turn bigger tires that chew
through the thickest bounty holes. When you gear down and go big, your machine
will turn into a mud monster. Plus, with a 30% gear reduction you can still
use it on the road and tear up trails and rocks.

for Rocks

Put 4” portals and a 30% gear reduction on your
machine and get the torque you need to crawl over rocks like they’re not even
there. You’ll have the clearance to get over anything without scratching up
your skid plate, and you’ll have room to run bigger tires. These portals are
built for boulders.

Perfect for Farming
Get 4” portals and a 15% gear reduction on your Mule. You’ll have clearance to
get over brush, sticks, and debris without issue. Plus, you’ll have the gear
reduction to push through ruts and ditches easily all while towing a trailer
full of tools. You’ll still have enough speed to cruise down the road between

Perfect for Trails
Get 4”
portals and a 15% gear reduction on your machine and blaze a new trail. You’ll
keep that high speed and leave your friends in the dust when you hit a hill or
dirt shelf. A little lift and a little extra torque will bring out your
machine’s true potential.

Learn more about how tire size and gear
reduction can unleash your machine’s potential.


Our gears are precision ground and made with 9310 billet
steel alloy for high strength and high speed. That means they’re cool and
quiet even when you’re hammering down the throttle on the road, and they have
strength to withstand every ride.

Stronger Housings by

Trust us when we say we’ve done our research. We’ve
seen what makes housings fail—you know, those designs and materials that give
off a “what not to do” vibe. And we do the opposite of that. Our housings are
stronger, smarter, and more dependable by design. Whether you go with cast or
our USA-made and CNC-machined 6061 billet aluminum, you’re getting portal
housings that offer unmatched strength and reliability.

  • Our housings
    are reinforced in all the right places
  • They’re built with better oil
    flow and gearing forces in mind
  • There are no gimmicks and no vents
    because vents do more harm than good—we know because we tested them

Advanced Gaskets and Seals
Whether you go with
cast or billet, both housings use:

  • Advanced gaskets with excellent
    oil resistance and a lower deterioration rate than Kevlar gaskets
  • A
    sealed input gear and double-lipped output seal
  • 100% sealing coverage
    throughout so you can forget about oil leaks

Rated Customer Service

Still need a little help getting
exactly what you need? We’ve got a dedicated team just for portal support.
Give us a call so we can get the perfect set of portals in your hands today.

Kawasaki Mule Pro
Portal Gear Reduction Recommendations
Tire Size Required Suspension Setup with 4″ Portals Recommended 4″ Portal
Gear Reduction
Up to 27″ Stock 15%
28″ 2″ Lift
Up to 27″ 1.5″ Forward Front
28″ to 30″ 1.5″ Forward Front
and 1.5″ Offset Rear A-Arms
28″ to
1.5″ Forward Front A-Arms and 1.5″ Offset Rear A-Arms with 2″ Lift Kit 30%
Gear reductions listed are general guidelines to maintain
factory top speed. Installing a larger than recommended gear reduction will
result in extra torque and lower top speed. Give us a call for more

Patent # 11,299,042


  • Available with billet or cast aluminum housing
  • Cool, quiet,
    precision ground gears made from 9310 alloy billet steel
  • Increases
    width by 4 in. per side (8 in. total)
  • 1.5 in. diameter 4340 hardened
    steel drive shaft
  • No leak bearings and seals
  • Universal hub
    fits all major bolt patterns
  • Comes complete with all hardware,
    backing plates, brake lines, and instructions


  • 14” or larger wheel required
  • Cannot
    exceed 5” backspacing
  • Not compatible with dual beadlock wheels


  • Kawasaki Mule Pro FXT : 2015-2023
  • Kawasaki Mule Pro FX :
  • Kawasaki Mule Pro DX : 2016+
  • Kawasaki Mule Pro DXT
    : 2016+
  • Kawasaki Mule Pro FXR : 2018+
  • Kawasaki Mule Pro FXT
    Ranch Edition : 2016+

NOTE: Wheels need to have a
center hole of at least 3.25″ (82.55mm) or require a 1” wheel spacer.

Additional information

Portal Housing Material

Billet, Cast

Portal Gear Reduction

15%, 30%