Free ShippingChoose the right 4-inch portal setup for your Defender HD10
SuperATV GDP portals add lift at the wheel hubs and combine it with gear reduction. Start with your exact vehicle and suspension setup, then choose your portal construction and reduction.
Added clearance at the hubs
Choose for your tires and riding
Dual idler uses billet housings
Check vehicle fitment · Check your wheels · Installation & care
Configure your portals in four steps
- Match your year and trim. Use the fitment groups below. A model year alone does not identify the correct kit.
- Confirm your existing suspension. Select the appropriate Big Lift Kit configuration. If you already have a suspension lift and are unsure which choice applies, contact us with its brand, part number and lift height.
- Choose portal construction and gearing. Compare the choices below.
- Choose whether to add a frame stiffener. Select the no-stiffener configuration only if you already have the appropriate frame reinforcement. The stiffener is an optional package component, not part of every kit.
Which portal construction should I choose?
| Choice | What changes |
|---|---|
| Single idler / cast | The lowest-priced configuration. |
| Single idler / billet | Billet aluminum housing with single-idler gearing. |
| Dual idler / billet | Two idler gears share the load. Dual-idler construction also adds 3/4 inch of front and rear offset, extending the wheelbase by 1.5 inches. |
15% versus 30% gear reduction
15%: the smaller reduction, preserving more wheel speed. 30%: the larger reduction for a greater emphasis on low-speed torque. Larger tires also affect gearing, clearance and handling; select reduction as part of the whole build.
Gear reduction trades wheel speed for torque; it does not increase engine horsepower. Tire diameter also affects the final result.
Vehicle fitment: choose your group
For the listed four-wheel HD10 models. This listing does not cover HD11 or Defender 6x6 models. Match both year and trim, including whether your vehicle is a MAX.
Group 1 — earlier standard HD10 models
- Defender HD10: 2016–2019
- Defender HD10 DPS and XT: 2016–2021; XT Cab: 2016–2017
- Defender HD10 XTP and Mossy Oak: 2018–2021
- Defender HD10 PRO: 2020–2021
- Defender MAX HD10, MAX HD10 DPS and MAX HD10 XT: 2017–2021
- Defender MAX HD10 XT Cab: 2017
Group 2 — earlier XMR, Limited and selected cab/MAX trims
- Defender HD10 Limited and MAX HD10 Limited: 2020–2021
- Defender HD10 XMR: 2018–2021
- Defender MAX HD10 Lone Star Edition and XT Cab: 2018–2021
- Defender MAX HD10 XMR: 2019–2021
XT Cab owners: SuperATV lists 2018–2021 non-MAX XT Cab in both earlier groups. Please confirm the correct group with UTV Direct before ordering that trim.
Group 3 — 2022 and newer, listed HD10 trims
- Defender HD10: base, DPS, Limited, Mossy Oak, PRO, XMR, XT, XT Cab and XTP.
- Defender MAX HD10: DPS, Limited, Lone Star Edition, XMR, XT and XT Cab.
Check your wheels before ordering
- Minimum wheel diameter: 14 inches.
- Maximum backspacing: 4.5 inches.
- Dual beadlock wheels are not compatible.
- Minimum center bore: 3.25 inches (82.55 mm), or the manufacturer specifies a 1-inch wheel spacer.
- Universal hubs support 4/156, 4/137, 4/115 and 4/110 bolt patterns.
Check the complete wheel specification, trailer clearance and trail-width restrictions. A portal lift does not guarantee that a particular tire will clear at full steering lock and suspension compression.
Included components
Four assembled portal boxes; four hubs with stainless slotted rotors and lugs; four backing plates; four caliper mounting plates; two steering arms; extended brake lines; installation hardware and recessed castle-nut socket. A frame stiffener is included only when selected.
Installation, maintenance & warranty
Read the instructions for your exact SKU before starting. Installation involves hubs and brakes; allow adequate time and arrange qualified help if needed. Confirm required supplies and lubricant in the instructions. SuperATV specifies 80W-90 gear oil, not grease. Incorrect lubrication can damage the portals and void coverage.
SuperATV's limited lifetime portal warranty applies to the original purchaser, subject to its terms and exclusions. Bearings, rotors, seals and gaskets are excluded under the portal warranty. Read the manufacturer's warranty policy.
Shipping
Free standard shipping within the contiguous United States. For Alaska, Hawaii, U.S. territories, Canada and other international destinations, request a shipping quote before ordering.
Need help matching your build? Call 888-716-1660 with your year, exact trim, wheel size/backspacing, tire size and current suspension modifications.
UTV Direct Return Policy
Eligible items may be returned within 30 days of receiving your order. All returns must be submitted through the UTV Returns Center and are subject to inspection before a refund or exchange is processed.
- Items must be returned within 30 days of receiving them.
- Items must be returned in new, undamaged, uninstalled condition and in the original packaging.
- Windshields with the protective covering removed are not returnable.
- Special-order and custom items are non-returnable.
- Return shipping expenses are the responsibility of the customer unless UTV Direct shipped the incorrect item in error.
- Exchanges will not be shipped until the return has been received and inspected.
- The original shipping cost may be deducted from any returned order that received free or shared shipping when the order was placed.
- Returned items that do not meet return requirements may be denied a refund or exchange.
SuperATV - 10%
During checkout, we ask for your year, make, and model. UTV Direct is not required to verify fitment on the products selected. It is ultimately the customer’s responsibility to confirm that the products ordered are correct for their vehicle. Fitment information is listed on each product page. If you are unsure, please contact our sales team before placing your order.
Refund timing may vary. You should generally expect to receive your refund within four weeks of giving your package to the return shipper, although many refunds are completed more quickly. This time period includes return transit time, inspection/processing time, and bank/payment processing time.
View Full Shipping & Returns Policy
Return authorization emails are typically sent within 2 business days. Please check all email folders, including spam and promotions folders.
