To avoid any fitment issues, please make sure to select the exact year, make and model of your vehicle. If you are unsure, please reach out to us for assistance prior to purchasing. Not that this part is built-to-order and NON-RETURNABLE. This part must be installed by a licensed professional to avoid any issues related to the complex installation

Gen 3 Portals are Geared for All
SuperATV’s GDP 6” Portal Gear Lift gives you a lift and a gear reduction in one box. Get the clearance to run bigger tires and the torque you need to turn them. The lift and gear reduction are in the hub which means they maintain suspension geometry and reduce drivetrain stress. Customize by choosing between a 30% or 45% gear reduction and selecting a cast or billet aluminum housing. GDP portals are truly geared for all.

45%–Perfect for Mud
Install big 6” portals with a 45% gear reduction to get clearance for huge tires and a massive boost in torque. It’ll turn your monster tires like they’re stock and take your Scrambler through the biggest, thickest mud holes you can find. These portals are pure power — and they’re really good at flingin’ mud.

45%–Perfect for Rocks
A 6” portal box with a 45% gear reduction gives you tons of torque to crawl over any rock or boulder you can find. With that much power, rock shelves will feel like speed bumps and boulders feel like pebbles. With 6” of clearance, you’ll run bigger tires and spend less time getting stuck in the rocks.

30%–Perfect for Everything
A 30% gear reduction lets you turn bigger tires and gives you the versatility to run mud, dominate trails and hills, and maintain high speed on the road. It gets your power to the ground to make your ATV more capable on every ride.

Better Gears
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 get you through every nasty mud hole and rock garden.

Stronger Housings by Design
GDP housings are backed by years of experience—we’ve made thousands of them. They’re not amature housings, they’re professionally made by us and we know what we’re doing. So whether you want cast or USA-made billet aluminum, you won’t find a better quality housing anywhere else.

• 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

6" Portal Gear Reduction Recommendations

FEATURES

• Available with billet or cast aluminum housing
• 9310 alloy billet steel precision ground gears are cool and quiet
• 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 hubs can be set up to work with the following bolt patterns: 4/156, 4/137, 4/115, and 4/110
• Comes complete with all hardware, backing plates, brakes lines and instructions