ATB A-SA51 Strut Grip Step Assembly for Class 8 Frames, Aluminum, Two Steps, Mounting Kit
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Fits the same truck
Features
- Strut Grip Steps: ATB uses 3/16" x 10-gauge aluminum strut grip for a non-slip step surface.
- Two-Step Assembly: A two-step assembly with consistent step spacing, 20" high and 13" deep.
- Class 8 Frame Mount: Built as a frame step for Class 8 semi trucks, for drivers, fleet technicians and service crews.
- Six Widths: Widths of 12", 14", 16", 18", 20" and 24"; ATB also builds custom sizes.
- Mounting Kit Included: ATB's M3000C mounting kit comes with it.
Description & Fitment
The ATB A-SA51 is a two-step aluminum strut grip assembly that bolts to a Class 8 semi truck frame. ATB builds it for drivers, fleet technicians and service contractors who need steady access to the truck. It is 20" high and 13" deep in six widths, with a smooth aluminum finish and ATB's M3000C mounting kit.
Fitment & Compatibility
How to choose: measure the open space on the frame where the step goes and pick the widest step that fits; height (20") and depth (13") are the same on every width.
Check the frame mount spacing before ordering.
Fits: Class 8 semi truck frame (check frame mount spacing and width)
About ATB
American Truckboxes (ATB) builds aluminum and steel truck boxes, tanks and storage in Blanchard, North Dakota, and has done so for more than 25 years, by its own account. Its range covers pickup crossover, side-mount, chest and drawer boxes, service-truck boxes and packs, fuel tanks, and heavy-truck and trailer boxes.
Authorized ATB dealer. Prestige Truck is an authorized ATB dealer: every box on this page is built by ATB to the part number shown.
Frequently Asked Questions
Will it fit my truck?
ATB builds it for Class 8 semi truck frames. Confirm the frame mount spacing and the width you have room for.
How does it mount?
With the included M3000C kit it bolts to the truck frame. Follow the truck maker's manual for frame drilling; ATB warns never to drill the top or bottom frame flange.
Can I get a different width?
ATB offers six widths from 12" to 24" and builds custom sizes. Contact us with your measurements.
How does it ship?
By freight from the ATB factory in Blanchard, ND, with lift-gate delivery available. For Alaska, Hawaii or Canada, contact us for a freight quote before you order.
What should I check when it arrives?
Check it before the driver leaves: look it over for dents, scratches or shipping damage, note any damage on the delivery receipt and send us photos.
How do I make a warranty claim?
Contact us with your order number and photos and we will work the claim through with ATB.
Installation
Stuck on a step?
- A-SA51 aluminum strut grip two-step assembly
- M3000C mounting kit: four 1/2" x 2" Grade 8 bolts, four 1/2" flat washers, four 1/2" lock nuts, two 3" x 12" rubber strips
Specifications
| Brand | ATB |
|---|---|
| Type | Class 8 frame step assembly, two steps |
| Material | Aluminum strut grip, 3/16" x 10 gauge |
| Finish | Smooth aluminum |
| Height | 20" |
| Depth | 13" |
| Mounting kit | M3000C (included) |
| Made in | USA |
| Part number | A-SA51-201312-S |
| Part # | Size |
|---|---|
| A-SA51-201312-S | 20"H x 13"D x 12"W |
| A-SA51-201314-S | 20"H x 13"D x 14"W |
| A-SA51-201316-S | 20"H x 13"D x 16"W |
| A-SA51-201318-S | 20"H x 13"D x 18"W |
| A-SA51-201320-S | 20"H x 13"D x 20"W |
| A-SA51-201324-S | 20"H x 13"D x 24"W |
Warranty, shipping & returns
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Warranty
ATB covers its standard truck boxes with a 60-month (5-year) limited warranty for the original purchaser; it is not transferable.- For a warranty claim, contact us with your order number and photos and we will work it through with ATB.
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Shipping
Ships by freight from the ATB factory in Blanchard, ND; lift-gate delivery available.- Alaska, Hawaii and Canada: contact us for a freight quote before you order.
- We email your tracking details as soon as it ships.
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Inspect on delivery
Check the box when the freight arrives, before the driver leaves: look over the lids, doors, corners and welds for dents, scratches or shipping damage. Note any damage on the delivery receipt and send us photos. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
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30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.