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We don’t make assumptions about the way you ride because we know that off-roading is different for everyone. That’s why we don’t build “one size fits all” portals. When you get SuperATV’s GDP 6” Portal Gear Lift for your Yamaha Viking, you get to pick your gear reduction (30% or 45%) and your housings (cast or billet aluminum). Whatever you choose, there’s no better way to get some more clearance under you while also changing your gear ratio.
GDP—the Most Trusted Name in Portals
We’ve been designing and testing portal gear lifts since the beginning, so we know exactly what you need to take your ride to the next level. Feeling skeptical? Head to the nearest ride park and take a look around. More riders are running SuperATV’s GDP portals than anything else on the market, and there’s a reason for that—we’re the experts.
Perfect for Mud
You haven’t experienced mud until you’ve tackled it with a portal gear lift. The extra six inches of clearance give you room for massive mud tires and keep you from getting swamped. And a gear reduction will have you cutting through the thickest, most challenging mud bogs and making it look easy.
A Gear Reduction That Protects Your Drivetrain
One of the many reasons we love portal gear lifts is the fact that the gear reduction is built right into the hub. That puts less stress on your drivetrain, which means your machine’s most vital parts can do their job without acquiring premature wear. You’ll ride easy knowing that your prop shaft, axles, diff, and transmission are in good hands.
Learn more about how tire size and gear reduction can unleash your machine’s potential.
Unmatched Gear Material
A portal gear lift is only as good as the gears inside, which is why we use the most premium, top-of-the-line gears out there. They’re made with 9310 alloy steel and are precision ground to ensure perfect mating and quiet performance, ride after ride.
Stronger Housings by Design
We’ve been researching and designing portal housings for years, so we know what it takes to make or break them. Whether you choose our USA-made, CNC-machined billet aluminum housings or you decide to go with cast aluminum, you’re getting portal boxes that are second to none.
The Strongest Portal Backing Plates You Can Get
Our portal backing plates are made with an advanced steel alloy that’s specialized for ultra high-force applications. They’re 5/16” thick and made from a metal even stronger than chromoly, so if you’re wondering whether these backing plates can put up with your level of trail abuse, the answer is “heck yes.”
Advanced Gaskets and Seals
Whether you go with cast or billet, both housings use:
Bearings That Rock
Just like every other piece of GDP portals, our bearings are second to none. We use roller bearings to hold our idler gear in place because we don’t compromise when it comes to strength. Our output bearing is a double-angular contact bearing that can handle huge loads in any direction without wearing down. No matter how hard you ride, these bearings are up for the challenge.
Universal Hubs and Slotted Rotors
Our precision-ground, stainless steel slotted rotors are designed to give you the braking power you need, exactly when you need it. And to make your life easier, we make them with 4/156, 4/137, 4/115, and 4/110 bolt patterns and lugs, allowing you to run nearly any side-by-side wheel there is. We also invented the tapered output shaft that attaches to the hubs. It provides a more secure lock that keeps your hubs from wobbling or wearing over time.
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.
| Yamaha Viking Portal Gear Reduction Recommendations | |||
|---|---|---|---|
| Max Tire Size | Required Suspension Setup with 6” Portals | Recommended 6” Portal Gear Reduction | |
| Up to 26” | Stock | 30% | |
| Up to 27” | 2” Lift Kit | 30% | |
| Up to 31” | High Clearance 1.5” Forward Offset A-Arms | 30% | |
| Up to 32” | 2” Lift Kit and High Clearance 1.5” Forward Offset A-Arms | 45% | |
| Up to 37” | 4” Lift Kit | 45% | |
| 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 information. | |||
| 6” Portal Gear Lift Includes: | ||
|---|---|---|
| (4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, Thermo-Tork® 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 adapter plates | ||
| (2) Steel steering arms | ||
| (2) Aluminum hub adapters | ||
| Extended brake lines | ||
| Steering stop brackets | ||
| All required hardware, including recessed castle nut socket | ||
- Available with billet or cast aluminum housing
- Cool, quiet, precision-ground gears made from 9310 alloy billet steel
- 1.5 in. diameter 4340 hardened steel driveshaft
- Housings use Thermo-Tork® gaskets that don’t let anything through
- Universal hub fits all major bolt patterns
- Gear reduction reduces stress on your drivetrain
- Weighs 224 lb. total, which is 25+ lb. lighter than the competition
- 18” or larger wheel required
- 18” wheels cannot exceed 4-1/2” backspacing
- 20” and larger wheels cannot exceed 5” backspacing
- 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
Free Shipping
At our company, we are proud to offer our valued customers free ground shipping on most orders over $100, a fantastic incentive to help you shop for your favorite items. Please note, this offer is applicable only to the lower 48 states within the United States. We strive to ensure that your products reach you in a timely and cost-effective manner. However, we would like to inform you that certain exclusions may apply due to the size, weight, or destination of the order. We kindly encourage you to review our shipping policies or reach out to our customer service team for any clarifications. We are committed to providing the best shopping experience possible, with quality service at every step of your journey with us.
Shipping
Shipping to US with verified payment & confirmed address. Domestic shipments are a mix of services from UPS, USPS, and FedEx. All packages may require a signature.
Delivery
Most of our products ship within 1 Business Day - Occasionally, we are out of stock on an item and will sometimes use a drop ship from one of our suppliers. Drop ships from a handful of suppliers can add up to 5 days processing time.
Refunds & Returns
PLEASE CALL US FIRST for an RMA (Return Merchandise Authorization) #.
All returns made to Revolution Off-Road, LLC must be in the original box with all parts included in new condition.
All returns must be sent with a copy of the original receipt, explanation of the problem and an RMA #.
All returns for must be received by Revolution Off-Road, LLC within 15 days of the product being received by the customer. (determined by UPS tracking #)
Customer is 100% responsible for ALL shipping costs on returned items. Thus, if you return an item and did not originally pay shipping costs, the original shipping cost incurred by us will be deducted from your refund.
Orders canceled by the customer will be subject to a 10% cancelation fee.
Any shipping costs paid by customer on original order, including ground shipping or expedited shipping will not be refunded including in the event of a return.
Credit will be issued after the product and its contents are inspected and found to be in brand new condition as shipped to the buyer.
All returns will be subject to a 20% - 30% restocking fee, depending on the manufacturer.
Shipments refused by you (the Customer) and returned back to Revolution Off-Road will carry an automatic 20% re-stocking fee deducted from the total credit owed.
Credit will not be issued in the following situations:
Product has been installed and or used. Product has been damaged from an attempt to install and/or use.
Product is shipped back without original box, manual and/or parts.
Seal on electrical parts is broken, or it is evident that electrical part has been installed to vehicle.
Product serial number does not match what was originally shipped to buyer.-Product is deemed not re-sellable due to customer's actions.
Electrical components after they have been installed.
Product Warranties
Revolution Off-Road, LLC honors all manufacturer warranties. Any product that carries a manufacturer warranty must be warrantied through its respective manufacturer. Installed components which have failed must be removed and shipped back to its manufacturer for inspection before replacement. Revolution Off-Road, LLC is not responsible for shipping products to manufacturers for inspection or the return shipping to the end user. Labor time is not paid by Revolution Off-Road, LLC.
Damaged Products
If a products arrived damaged you must contact Revolution Off-Road, LLC WITHIN 5 BUSINESS DAYS. Do not install the product as the manufacturer will handle shipping a replacement item. If you install the product then it will void any shipping claim as the product will need to be reviewed by sending pictures of any damage. Once again review your product before attempting to install it, if any damage is found, do not install.
Cores
There is a 30 day turnaround policy on cores from the time it was delivered.
