ARB BASE Rack front quarter guard rail kit laid out on white: rails, corner pieces, mounting brackets, pads and hardware
ARB BASE Rack front quarter guard rail in black, shown on white

ARB BASE Rack Front Quarter Guard Rail, 51" Wide (1780020)

$267.00
FREE SHIPPINGNo sales tax Only 1 leftIn stock now  Estimated delivery
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Features

  • Dovetail rail mounting: The rail mounts to the BASE Rack's dovetail system, which makes fitting simple and keeps it secure.
  • Keeps cargo in place: The rail gives the load a barrier to sit against, so gear is less likely to shift or slide off over rough ground.
  • Front barrier with corners: A front rail with short returns at each corner guards the leading edge of the rack.
  • Low profile like BASE Rack: The rail sits low to keep the sleek BASE Rack look.
  • Robust aluminum construction: Like the BASE Rack itself, the rail is made from aluminum.
  • Build the layout you need: Adding a quarter rail is one way to tailor the rack to each trip or job.

Description & Fitment

Sized for the 51" (1285 mm) wide BASE Racks, this front quarter rail puts a barrier across the front of the deck with short corner returns, at around 6.6 lb (3 kg). It is the wider twin of the 45" 1780010. The box holds the rail, its cast aluminum corner caps and upright clamps, Torx fasteners with nyloc nuts and ARB's instructions. No platform is included.

Fitment & Compatibility

Check before you buy: this rail is made for 51" wide BASE Racks such as our 1770020, 1770030 and 1770040; match it to your platform size. Rail styles ARB offers: front quarter (1780010 45", 1780020 51"), front three quarter (1780140, 1780150, 1780040, 1780050, 1780060), full (1780170, 1780180, 1780080, 1780070, 1780100) and trade (1780600 49", 1780110 61", 1780120 72", 1780130 84").

Not for: other BASE Rack sizes, Classic racks or other brands' platforms.

About ARB

ARB.

ARB began in Melbourne, Australia, in 1975, when founder Tony Brown started building bull bars for four wheel drives heading into the outback. Fifty years on, ARB designs and tests its own 4x4 equipment, from bumpers, winches and recovery gear to Air Locker differentials, fridges and camping kit.

In North America, ARB products are supported by ARB's US office, Air Locker Inc., in Auburn, Washington, which administers the warranty for products bought here.

Authorized ARB dealer. Prestige Truck is an authorized ARB dealer, so what we sell is new and genuine ARB. ARB's warranty period starts on the purchase date shown on your receipt, so keep it with your vehicle records.

Frequently Asked Questions

Will it fit the 49" x 57" platform?

No. This rail suits 51" (1285 mm) wide platforms such as the 1770020, 1770030 and 1770040.

Is there a narrower version?

Yes, the 1780010 for 45" wide racks.

Does the rail fit my BASE Rack?

Each ARB guard rail is made for one BASE Rack size. Match the size on this page to your platform's size, not to the vehicle.

How does it attach?

It clamps into the BASE Rack's dovetail channel with cast aluminum upright clamps and uses the rack's corner fixing points. ARB supplies Torx fasteners with nyloc nuts.

Can I change the rail later?

Yes. Guard rails come off the dovetail channel, so you can move from one style to another as your loads change.

What warranty applies?

ARB covers BASE Rack guard rails for 3 years with unlimited miles against defects in materials and workmanship.

Installation

DifficultyNot stated by ARB
TypeClamps to an ARB BASE Rack platform (sold separately)
ToolsNot stated by ARB
InstructionsARB fitting instructions 3789955, supplied with the rail

Stuck on a step? Ask our install experts

Specifications

BrandARB
Part Number1780020
Product TypeRoof rack guard rail
LineARB BASE Rack
Rail StyleFront quarter: front rail with short corner returns
MaterialExtruded aluminum rail, cast aluminum corner caps and upright clamps
FinishIntegrit textured black powder coat
AttachmentBASE Rack dovetail channel plus rack corner fixing points
Suits BASE Rack51" wide (1285 mm wide)
Weight6.6 lb (3 kg)
FastenersTorx M6 and M8 with nyloc nuts
Fitting InstructionsARB 3789955
Warranty3 years, unlimited miles
UPC9332018068569

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Warranty, shipping & returns

  • 3 years, unlimited miles warranty

    ARB covers its BASE Rack guard rails for 3 years with unlimited miles.
    • ARB's warranty covers defects in materials and workmanship for the warranty period, which starts on the date you bought the product from an authorized ARB retailer (the date on your receipt).
    • For a covered defect, ARB will repair or replace the faulty item at its own cost, or refund what you paid for it. ARB decides which.
    • Fit and use the product the way ARB's product information (instructions, safety notes, labels and packaging) directs, for the job it was designed for, and within vehicle safety and compliance laws.
    • Not covered: normal wear and tear; incorrect fitting; misuse, negligent use or overloading; poor or missing repair and maintenance; alteration, abuse, acts of nature, vandalism, collision, road hazards or adverse conditions; racing, rallying, hill climbs, speed trials or other competitive events, formal or informal; use in underground mining or other highly corrosive settings.
    • Commercial use (for example hire vehicles or mining) carries ARB's commercial term of 3 years or 60,000 miles, whichever comes first, with the same 1-year or 25,000-mile limit on the wear items ARB lists.
    • Claims: contact us first and keep your purchase receipt. ARB accepts no claim without proof of purchase and asks that a fitted product stay on the vehicle until the claim has been reviewed.

  • Free shipping

    Ships free to the lower 48 states, with no minimum order.
    • Order by 5 PM ET on a business day and it starts processing the same day.
    • Most orders arrive within 1-5 business days.
    • We email your tracking number as soon as it ships.

  • Inspect on delivery

    Unpack the rail as soon as it arrives. Check the welds and the textured powder coat, and count the corner caps, upright clamps and Torx fasteners against the box contents on this page before fitting. 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.

  • 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.

What our customers say

5 · 1 review

JUAN H. Verified
07/27/2026

Excellent quality, perfect fit, and

Excellent quality, perfect fit, and true ARB craftsmanship. Installation was straightforward, and it integrates perfectly with the ARB BASE Rack. It adds just the right amount of cargo security without getting in the way of loading gear. The build quality is outstanding—sturdy, well-finished, and designed to last. If you're building an overland or expedition setup, this is definitely a worthwhile upgrade. Highly recommended! @toyodeal

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