Yamaha Wolverine X2/X4 850 4" Portal Gear Lift

Gen 3 Portals are Geared for All
Give your YamahaWolverine X2 850 or X4 850 the gift of power and performance with SuperATV’s GDP 4” Portal Gear Lift. Choose from 15% or 30% gear reductions and cast or billet aluminum housings so you can optimize for the kind of riding that you do. Or take your strength over the top by upgrading to dual idlers. With GDP, your Wolverine is limitless.

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’re carving through mountain trails or chest-deep in mud, GDP Portals can take your Wolverine further. A 30% gear reduction gives you tons of torque to turn big tires through mud or over rocks. A 15% gear reduction still gives you punchy torque while letting you get wild with on open throttle on trails and tracks. No matter what you’re doing, there’s a GDP Portal setup that can help.

A Gear Reduction That Protects Your Drivetrain
Because GDP 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 Portals by Design
GDP Portals are built to be unmatched. 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

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

Yamaha Wolverine X2 Max Tire Size
Tire Size	Required Suspension Setup with 4" Portals
Up to 28"	Stock

Yamaha Wolverine X4 Max Tire Size
Tire Size	Required Suspension Setup with 4" Portals
Up to 28"	Stock
Up to 28"	2" Lift Kit
29.5"	2" Lift Kit and removing inner wheel well guard
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