What Is Redcat Part RER28769 Used For? Fitment FAQ
By Redcat Racing | Published: 2026-11-01
Category: Product Reviews
RER28769 is the rear outer portal housing for Redcat Ascent 18 models. Here's what it does, which trucks it fits, and when to replace it.
Quick Answer
RER28769 is the rear outer portal housing (sold as a 1 set) for the Redcat Ascent 18 family. Replace it when the outer housing on a rear portal axle is cracked, stripped, or worn and no longer holds the axle components securely.
Why the outer portal housing matters on an Ascent 18
The outer portal housing is the visible end of the rear portal axle assembly. It holds the outer drivetrain components in place and takes the brunt of impacts from rocks, curbs, and rollovers. A damaged housing can let parts shift, which changes how the rear axle behaves and may lead to more expensive damage if ignored.
Because RER28769 is a stock replacement part rather than an upgrade, it restores the original fit and function. That makes it the right choice when you want to get back to factory geometry, not when you are chasing a performance change.
Fitment is specific: check your model before ordering
Redcat lists RER28769 as compatible with the ASCENT 18, Ascent 18 Brushless, ASCENT 18 SCOUT II, and ASCENT 18 SCOUT II BRUSHLESS. If your truck is a different Redcat platform, this housing is not the correct part. The catalog does not list other compatible vehicles, so treat the four Ascent 18 variants as the full fitment range.
RER28769 Fitment and Replacement FAQ
- What is RER28769 used for?
- It is the rear outer portal housing for the Ascent 18 models listed above. It replaces the outer housing at the end of the rear portal axle when the original is damaged or worn.
- Which Redcat vehicles does RER28769 fit?
- ASCENT 18, Ascent 18 Brushless, ASCENT 18 SCOUT II, and ASCENT 18 SCOUT II BRUSHLESS. No other vehicles are listed, so confirm your model name and version before ordering. If your model is not one of these four, do not order this part.
- How do I know the outer portal housing needs replacing?
- Look for cracks, stripped threads, or a housing that no longer holds the outer axle parts tightly. If the rear axle has play or the housing looks deformed after an impact, inspect it before your next run.
- Is RER28769 a left or right side part?
- The catalog describes it as a rear outer portal housing sold as a 1 set and does not specify a side. Check your vehicle's exploded parts diagram to see how many housings your rear axle uses and which side you need.
- Does the set include bearings or hardware?
- The catalog lists only the housing set, with no bearing or hardware contents stated. Reuse your existing bearings and fasteners only if they are in good condition; otherwise source them separately.
- Is RER28769 an upgrade?
- No. It is a replacement part intended to restore the original rear portal housing, not a performance upgrade. Choose it when you want factory fit and function back.
Product Facts
- RER28769: Rear Outer Portal Housing, 1 set, part number RER28769. One set covers the housing replacement; check your truck's parts diagram to confirm whether you need one side or both before ordering.
RER28769
