Description
GDP Portals Give You Unmatched Performance
SuperATV’s
GDP 4” Portal Gear Lift for the Yamaha Viking gives you power and performance.
Choose from 15% or 30% gear reductions and cast or billet aluminum housings so
you can optimize for the kind of riding that you actually do. You can get a
30% gear reduction for big tires and challenging rides or a punchy 15% gear
reduction for fast trails. Plus, you can upgrade to a stronger portal by
opting for our dual idler configuration. Whatever you choose, GDP’s Yamaha
Viking portals will give you industry-leading performance on every ride.
What Is a Dual Idler®?
Perfection takes time. After
years of research and development, we’ve made our dual idler gear portals
unlike any other. By placing a second idler gear in the portal box, the load
gets spread over twice as much surface area for more reliable torque transfer
and the strongest gear set you can get. Two idler gears don’t do a thing if
they’re not mated perfectly, though. Precision CNC grinding ensures ours do.
Our gears are made from the industry’s toughest 9310 steel alloy. Didn’t think
dual idlers mattered? With GDP’s quality and experience, they finally do.
Perfect for All Kinds of Rides
Whether you like
rocks, trails, mud, or doing a good day’s work, a Yamaha Viking portal gear
lift makes it better. A 30% gear reduction gives you plenty of punchy torque
to turn big tires through mud or over rocks. A 15% gear reduction still boosts
your torque a ton while preserving your top-end speed for trails and road
riding. No matter what you’re doing, there’s a GDP Portal setup that can help.
A Gear Reduction That Protects Your Drivetrain
Because our Yamaha Viking Portals put the gear reduction directly in the hub,
your entire drivetrain benefits. Your axles, differential, drive shaft, and
transmission all work less and wear less with a portal gear lift. You can put
the pedal down and have a blast without wrecking your ride.
Stronger Yamaha Viking Portals by Design
We dare you to
find portals stronger than GDP. Our housings are well researched and long
tested. And you get a choice—go with cast or USA-made, CNC-machined 6061
billet aluminum. They’re supported by beefy backing plates made of an advanced
steel alloy you won’t find in any other portal system. For robust, trail-
proven strength, GDP is the only choice.
- Our housings are reinforced
for gear retention and optimized for oil flow - Advanced steel alloy
backing plates are stronger than chromoly - Enhance with Portal
Blood—gear oil formulated for GDP Portals - There are no gimmicks and
no vents because vents do more harm than good—we know because we tested
them
Advanced Gaskets, Seals, and Bearings
Our portals use:
- Advanced gaskets and O-rings with excellent oil
resistance and low deterioration rates - A sealed input gear and
double-lipped output seal - 100% sealing coverage throughout so you can
forget about oil leaks - Double-angular contact output bearings to
prevent premature wear - Roller idler and drive bearings to maintain
perfect gear meshing
Complete the Package with a Frame
Stiffener
Yamaha Viking portals and monster tires are fun, but
they can place additional stress on your machine’s frame. To make your
suspension bulletproof, don’t forget to add a SuperATV Frame Stiffener when
you check out!
Top-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.
| 4” Portal Gear Lift Includes: | ||
|---|---|---|
| (4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, gaskets, and thrust bearings |
||
| (4) Universal hubs and precision-ground stainless steel slotted rotors with lugs |
||
| (4) Specialized steel alloy backing plates | ||
| (4) Steel caliper mounting plates |
||
| (4) Caliper mounting plate shims |
||
| (2) Steel steering arms | ||
| Extended brake lines |
||
| All required hardware, including recessed castle nut socket |
||
| Frame stiffener (must select at checkout) |
||
| Max Tire Size Recommendations for 4” Portal Gear Lift | ||
|---|---|---|
| Max Tire Size | Required Suspension Setup with 4″ Portals | |
| 23″ | Stock | |
| 24″ | 2″ Lift Kit | |
| 29″ | 1.5” Forward Offset A-Arms |
|
| 30″ | 2″ Lift Kit and 1.5” Forward Offset A-Arms | |
| 34″ | 4″ Lift Kit | If you need help figuring out which gear reduction is right for you, check out our portal gear reduction calculator. |
Max tire sizes are measured at full compression and full turn. The given tires sizes are the largest we fit without rubbing. With minor trimming or a small amount of rub, larger tire sizes can be used. |
Patent # 11,299,042
Patent # 11,318,787
FEATURE
- Available with billet or cast aluminum housing
- Dual idler
gear configuration maximizes strength - 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 - Housings use Thermo-Tork® gaskets or O-rings that don’t let
anything through - Universal hub fits all major bolt patterns
- Gear reduction reduces stress on your drivetrain
- Dual idler gear
configuration adds a 3/4” front and rear offset—1.5” total extension - Lighter than the competition
Fitment
- Yamaha Viking : 2014+
- Yamaha Viking EPS : 2014+
- Yamaha Viking EPS Ranch Edition : 2018+
- Yamaha Viking EPS SE :
2015+ - Yamaha Viking VI : 2015+
- Yamaha Viking VI EPS :
2015+ - Yamaha Viking VI EPS Ranch Edition : 2016+
- Yamaha
Viking VI EPS SE : 2015-2016
Wheel
Requirements:
- 14” or larger wheel required
- Wheels
cannot exceed 5” backspacing - If using factory 14″ wheels, you must
run 1″ wheel spacers - Not
compatible with dual beadlock wheels - Wheels need to have a center
hole of at least 3.25″ (82.55mm) or require a 1” wheel spacer





















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