Parts & installation
Manufacturer documented- Vehicle
- Element RC Enduro Trailwalker Portal Plus40131
- Position
- rear
- Change
- Replace both rear 15T/20T portal pairs with matched 12T/23T pairs.
Parts needed
Sold packages for one stated conversion| Part | Qty |
|---|---|
| 42373Enduro portal gears, 12T / 23T | 1 |
Element documents this configuration and the stated parts. Check your fitted transmission, axle and wheelbase before ordering.
Installation notes
- The manufacturer 42373 photograph shows two 12T input gears and two 23T output gears, enough for both rear wheel ends. Replace both rear pairs together and retain stock 15T/20T pairs at the front.
- Retain serviceable 42367 universals, 42369 output shafts, 42393 drive pins, 42365 cases/covers, bearings and cover screws. Rebuild and grease each wheel end in its factory orientation; check free rotation and steering clearance.
- With equal axle input speeds, 20/15 stock portal reduction versus 23/12 rear reduction makes the rear wheels about 30.43% slower, or the front about 43.75% faster relative to the rear. These use different denominators and must not be called the same percentage.
- Existing transmission overdrive compounds with the wheel-end ratio. Calculate from the actual installed transmission gears and tire diameters, not a generic portal percentage; no stock specification or speed-calculator field is changed by this proposal.
- Use 42373 for the optional 12T/23T gears and retain the stock 42372 15T/20T pair at the front. Check the actual gear markings rather than relying on an older parts description.
Sources
Element 42373 12T/23T portal gear set (opens in a new tab)
- Maker product information, applicable models and supporting parts.
Element 42373 package contents (opens in a new tab)
- Maker product photograph showing package contents.
Element Trailwalker Portal Plus assembly manual (opens in a new tab)
- Maker instructions and assembly diagrams for the stated parts and configuration.