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Rock Slide Engineering Gen III Step Slider | Rear Extension Passenger Side | 2020-2023 Jeep Gladiator JT | SKU BD-SS-300-JT4E
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Rock Slide Engineering Gen III Step Slider | Rear Extension Passenger Side | 2020-2023 Jeep Gladiator JT | SKU BD-SS-300-JT4E
Sale price
$330.00
Regular price
Regular price
$330.00
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Description
⚠️ Sub-Part — Requires Complete BD-SS-300-JT4 Step Slider System
This is the rear extension passenger side sub-part for the Rock Slide Engineering 3rd Generation Step Slider system. It is NOT a standalone step slider. The complete system (BD-SS-300-JT4) ships in 3 boxes: driver side step slider, passenger side step slider, and rear extension. This SKU is the rear extension for the passenger side — ordered as a replacement or when building out the system component by component.
The Rock Slide Engineering Gen III Step Slider Rear Extension (SKU BD-SS-300-JT4E) is the passenger side rear extension sub-part for the 3rd Generation Step Slider system for the 2020–2023 Jeep Gladiator JT. The 3rd Gen Step Slider is a fully functional power step integrated with a rock slider — 10-gauge steel exterior, stainless steel and aluminum internals, smart motor auto-deploy triggered by magnetic door sensors, step drops 12 inches on door open, manual override switch included. Plug and play standalone wire harness — no splicing, no cutting factory wiring.
If you have a 2024 Gladiator JT, order BD-SS-301-JT4E instead — the 2024 JT uses a different step slider generation.
Component Specifications — Gen III Step Slider System
| Spec | Detail |
|---|---|
| SKU / Part Number | BD-SS-300-JT4E |
| Brand | Rock Slide Engineering |
| Generation | 3rd Generation (Gen III) |
| Type | Rear extension — passenger side sub-part |
| Complete System SKU | BD-SS-300-JT4 — required base system |
| Exterior Construction | 10-gauge steel |
| Internal Construction | Stainless steel and aluminum — corrosion resistant |
| Finish | Powder coat — textured black (acid-etched base) |
| Weight | 47 lbs (this sub-part) |
| Install Time | Approximately 4 hours (full system) |
| Deploy Method | Automatic — triggered by door opening via magnetic door sensors |
| Step Drop | 12 inches below vehicle |
| Motor | Smart motor — eliminates gas strut for cold weather reliability |
| Wire Harness | Standalone plug-and-play — no splicing, no factory wiring modification |
| Override Switch | Yes — disables auto-deploy for off-road use |
| Installation | Factory mounting points — no drilling; retains manufacturer warranty |
| Off-Road Rating | Moderate — optional skid plate (AX-SP-300-JT4) for more aggressive trails |
| Cab Fitment | 4-door Gladiator JT only |
| Country of Origin | United States |
| Sold As | Each — rear extension passenger side sub-part |
What Is and Is NOT Included
| Item | Included |
|---|---|
| Passenger side rear extension | ✓ |
| Mounting hardware | ✓ |
| Complete BD-SS-300-JT4 step slider system | ✗ NOT included — required base system |
| Driver side step slider | ✗ NOT included — part of BD-SS-300-JT4 |
| Standalone wire harness | ✗ NOT included in this sub-part — included with BD-SS-300-JT4 |
| Magnetic door sensors | ✗ NOT included in this sub-part — included with BD-SS-300-JT4 |
| Skid plate | ✗ Optional — AX-SP-300-JT4 |
| Rocker guards | ✗ Optional — AX-SS-RG-JT4 |
| LED light kit | ✗ Optional — SL-LK-LED |
Gen III Step Slider — Complete System vs. Sub-Parts
| SKU | Contents | Notes |
|---|---|---|
| BD-SS-300-JT4 | Complete kit — driver side + passenger side + rear extension + wire harness + magnetic sensors | Ships in 3 boxes — full system for 2020–2023 JT |
| BD-SS-300-JT4E (this listing) | Rear extension — passenger side only | Sub-part — replacement or staged order |
| BD-SS-301-JT4E | Rear extension — passenger side — 2024 JT | Different SKU for 2024 Gladiator JT |
Gen III Step Slider Improvements Over Previous Generations
| Feature | Gen III (this system) | Previous Generation |
|---|---|---|
| Motor | Smart motor — no gas strut | Gas strut internals |
| Cold weather performance | Consistent deploy/retract in cold and harsh weather | Gas strut affected by cold |
| Rear door access | +2 inches added to rear extension | Shorter rear extension |
| Body contour | Step curves to follow vehicle contour — minimized gap at rear fender flare | Larger gap at rear fender |
Optional Accessories
| SKU | Accessory | Notes |
|---|---|---|
| AX-SP-300-JT4 | Skid plates | Required for aggressive trail use — step slider rated moderate without them |
| AX-SS-RG-JT4 | Rocker guards | Additional rocker panel protection |
| SL-LK-LED | LED light kit | Adds lighting to step slider |
| SL-DD-100 | Door delete kit | For doorless JT builds |
Verified Fitment
| Vehicle | Years | Status |
|---|---|---|
| Jeep Gladiator JT — 4-door — all trims | 2020–2023 | ✓ |
| Jeep Gladiator JT 2024 | 2024 | ⚠️ Different SKU required — order BD-SS-301-JT4E for 2024 JT |
| Jeep Wrangler JL / JK | All years | ✗ Different platform — JT-specific mounting geometry |
| 2-door Gladiator | N/A | ✗ 4-door only — Gladiator JT is 4-door only as a platform |
Critical Compatibility
| Configuration | Notes |
|---|---|
| 2024 Jeep Gladiator JT | Different SKU required — order BD-SS-301-JT4E, not BD-SS-300-JT4E |
| Aggressive trail use without skid plate | Rated moderate only — add AX-SP-300-JT4 skid plate for aggressive trail use |
| Jeep Wrangler JL / JK | Does not fit — JT-specific mounting geometry |
| Doorless Gladiator builds | Auto-deploy uses magnetic door sensors — door delete kit (SL-DD-100) addresses doorless configurations |
Common Questions
This is a sub-part — do I need anything else to use it?
Yes. The BD-SS-300-JT4E is the rear extension passenger side sub-part for the complete BD-SS-300-JT4 step slider system. The complete system includes the driver side step slider, passenger side step slider, standalone wire harness, and magnetic door sensors. This sub-part is for replacement of a damaged rear extension or for builders ordering components individually.
Does the step deploy automatically every time a door opens?
Yes. The magnetic door sensors trigger the smart motor to deploy the step 12 inches below the vehicle every time a door opens. The override switch disables auto-deploy for off-road use when the step needs to be retracted on trail.
Why does the 2024 JT need a different SKU?
The 2024 Gladiator JT uses a revised mounting configuration that requires the updated BD-SS-301-JT4E rear extension. Do not order BD-SS-300-JT4E for a 2024 JT.
Does this void the Gladiator factory warranty?
The standalone plug-and-play wire harness requires no splicing or modification to the factory wiring — Rock Slide Engineering states this design is intended to allow customers to retain their manufacturer warranty. Verify with your dealer before installation.
The Obsidian Take
The BD-SS-300-JT4E is for the 2020–2023 Gladiator JT owner who needs a replacement passenger side rear extension for the Gen III Step Slider system — or who is building out the complete system component by component. The Gen III is the correct step slider for a 4-door JT that splits time between trail use and daily driving: smart motor cold-weather reliability, 12-inch auto-deploy, no factory wiring modification, moderate trail rating with optional skid plate upgrade.
Confirm your Gladiator is 2020–2023 before ordering. If it is 2024, order BD-SS-301-JT4E instead. If you need the complete system, order BD-SS-300-JT4 rather than building from sub-parts.
⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information visit P65Warnings.ca.gov.
Non-Returnable Notice: Electrical and structural products that have been installed or modified are non-returnable. Verify fitment, model year, and system compatibility before ordering.
Manufacturer Data Disclaimer: Specifications and fitment data are sourced from Rock Slide Engineering manufacturer documentation. Obsidian Forged Auto Supply is an authorized Rock Slide Engineering dealer. Verify final fitment against your VIN and model year before ordering. Manufacturer specifications are subject to change without notice.
