GDP Portal Gear Lift 4" Dual Idler for Polaris General
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GDP Portal Gear Lift 4" Dual Idler for Polaris General
The Best Portals in the Industry Are GDP
What is a Dual Idler®?
GDP Lets You Ride Where You Want
Save Your Drivetrain with Portals
GDP Makes It Stronger
- 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
- 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
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
- (2) Steel steering arms
- Extended brake lines
- All required hardware, including recessed castle nut socket
Features:
- Available with billet or cast aluminum housing
- Dual idler gear configuration maximizes strength
- Cool, quiet, precision-ground gears made from 9310 alloy billet steel
- 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 1” offset
- Lighter than the competition
Wheel Requirements:
- 14” or larger wheel required
- Cannot exceed 5” backspacing
- Not compatible with dual beadlock wheels
| Polaris General Portal Gear Reduction Recommendations | ||
|---|---|---|
| Max Tire Size | Required Suspension Setup with 4" Portals | |
| 27" | Stock | |
| 27" | 3" Lift Kit | |
| 29" | 1.5" Forward Front A-Arms | |
| 29" | 1.5" Forward Front A-Arms and 3" Lift Kit | |
| 42" | 7-10" 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
WARNING: This product can impact machine operation. Customer and/or user is responsible for ensuring that this product is compatible with their machine as currently configured, properly installed, and understands any impact this product has or might have on the machine's operation.
⚠ California Proposition 65 Warning ⚠
WARNING: This product may contain a chemical known to the State of California to cause cancer or birth defects or other reproductive harm.

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