This Flat Aero rear axle cover kit is made for truck owners who want a cleaner rear wheel look with aerodynamic function. The revised design includes additional removal notches for easier wheel inspection and tire valve stem pressure checks.
Features include:
- Flat disc face design
- Helps reduce aerodynamic drag
- Streamlined rear wheel appearance
- Revised version with additional removal notches
- Heavy-duty plastic inner mounting base
- Easy snap-on plastic aero cover
- Fits standard 22.5″ x 8.25″ steel and aluminum wheels
- Includes 10 33mm thread-on nut covers
- Includes wheel protector film
- Includes top cover removal tool
- Chrome plated or matte black finish
- 6-month warranty
Key Features & Benefits
Flat Disc Aero Design
The flat disc face smooths the wheel opening for a cleaner, more streamlined appearance while helping reduce aerodynamic drag.
Revised Removal Notches
Additional removal notches make it easier to remove the cover for wheel inspection and tire valve stem pressure checks.
Complete Rear Axle Cover Kit
The kit includes the snap-on aero cover, inner mounting base, 33mm thread-on nut covers, wheel protector film, and top cover removal tool.
Compatibility & Use Case
Designed for:
- Rear axle applications
- Standard 22.5″ x 8.25″ steel wheels
- Standard 22.5″ x 8.25″ aluminum wheels
- Semi truck aerodynamic wheel styling
- Fleet appearance upgrades
- Owner-operator chrome or black wheel-end builds
Fitment depends on wheel size, lug nut style, thread exposure, and wheel clearance.
Installation & Technical Details
- Product type: Rear axle cover kit
- Style: Flat aero disc cover
- Wheel fitment: Standard 22.5″ x 8.25″ steel and aluminum wheels
- Mounting base: Heavy-duty plastic inner mounting base
- Outer cover: Snap-on plastic aero cover
- Nut cover size: 33mm
- Nut cover style: Thread-on
- Nut cover item number: #10552B
- Required thread exposure: Minimum 6 threads or 1/2″ above each lug nut
- Recommended tool: Nut cover installation tool, item #10259, sold separately
- Finish options: Chrome plated or matte black powder coated
- Warranty: 6 months
Do not install if the lug nuts do not have enough exposed threads for proper engagement.
What’s Included
Included:
- 1 × Flat Aero Rear Axle Cover
- 1 × Heavy-Duty Plastic Inner Mounting Base
- 10 × 33mm Thread-On Nut Covers, item #10552B
- 1 × Wheel Protector Film
- 1 × Top Cover Removal Tool
Sold separately:
- Nut Cover Installation Tool, item #10259
Available finishes:
- Chrome plated
- Matte black powder coated
Warranty & Damage Notes
This product includes a 6-month warranty.
No warranty coverage is provided for damage caused by road debris, rocks, chemicals, truck washes, improper installation, or similar external damage.
Frequently Asked Questions About Flat Aero Rear Axle Cover Kits
What wheels does this kit fit?
It fits standard 22.5″ x 8.25″ steel and aluminum wheels.
What does the flat aero cover do?
The flat disc face helps reduce aerodynamic drag and gives the rear wheel a streamlined look.
Can the cover be removed for inspections?
Yes. The revised design includes additional removal notches for wheel inspection and tire valve stem pressure checks.
Are nut covers included?
Yes. The kit includes ten 33mm thread-on nut covers, item #10552B.
How many exposed threads are required?
A minimum of 6 threads or 1/2″ of threads must extend through the top of each lug nut.
What finishes are available?
This kit is available in chrome plated finish or matte black powder coated finish.
Is the installation tool included?
The top cover removal tool is included. The recommended nut cover installation tool, item #10259, is sold separately.
What warranty is included?
This product includes a 6-month warranty, excluding damage from road debris, rocks, chemicals, truck washes, improper installation, and similar external causes.
