Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
View All Specialty Casters
Browse all specialty caster types
All measurements indicate the wheel diameter by the tread width.
The below capacity ranges indicate the working (dynamic) load that each caster will support. A safety factor should be included in your formula to determine your required load rating per caster.
W/(C-1)=R W is total weight needed to move. C is total number of casters required. R is ideal load rating, with safety factor built in. Divide the total load weight by one less caster than you will use to safely determine load rating.
Plate dimensions shown are overall mounting plate size.
When replacing existing casters, select the closest plate size and verify bolt-hole compatibility.
BHP = Bolt Hole Pattern, shown under each plate.
Upgrade your caster systems with Durastar Top Lock Brake Kits, specifically designed for 4" x 1-1/4" wheels used in the 21, 22, and 24 Series. These kits provide reliable, easy-to-use top lock braking, ensuring secure and stable positioning for carts, racks, and equipment across various applications.
Fabricated using high-quality materials, each brake kit is built to endure demanding industrial, institutional, and commercial environments. Whether used on medical equipment, utility carts, or warehouse dollies, Durastar’s precision brake kits deliver consistent holding power and peace of mind.
With a user-friendly installation process and a performance-driven design, these brake kits not only improve safety but also extend the usability of your caster systems. Trust in Durastar’s engineering expertise to keep your equipment securely in place.
Choose Durastar Top Lock Brake Kits for a dependable braking solution tailored to your 4" x 1-1/4" caster wheels. Enhance safety, stability, and operational efficiency with every lock.
Order processing
In stock. Orders placed before 12pm CT (Mon–Fri) typically ship the same or next business day from our Mansfield, TX warehouse.
Shipping method
Smaller orders ship parcel (UPS/FedEx Ground). Heavy or bulk quantities consolidate to LTL freight. The method and final cost are shown before payment, so there are no post-checkout adjustments.
Payment & procurement terms
New to CasterHQ? Open an account or request terms and send your resale or tax-exemption certificate before ordering so it is applied at checkout.
Volume pricing & quotes
Quantity discounts apply automatically — no codes needed. For large, recurring, or custom requirements, request a bulk quote and our team will confirm pricing, lead time, and total landed freight upfront.
Returns & warranty
Stock items carry a 30-day return policy in unused, resalable condition. Made-to-order and custom items are non-returnable once production starts. All products carry the manufacturer's warranty against defects.
Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas and freight deliveries may take longer.
For pallet freight, scheduled releases, or blanket purchase orders, contact our team and we'll confirm total landed cost before you commit. Direct line: 844-439-4335.
Upgrade the safety and control of your mobility equipment with the Durastar Top Lock Brake Kit, purpose-built for 4" x 1-1/4" caster wheels used in the 21, 22, and 24 Series. Whether you're managing utility carts, medical devices, or warehouse platforms, these brake kits provide a highly secure and dependable solution to keep your equipment exactly where you need it.
Each kit features a top lock brake design that firmly engages the wheel, delivering reliable stopping power with minimal user effort. Durastar combines precision engineering with high-grade materials to create a brake kit that not only performs consistently but also stands up to the challenges of industrial and commercial environments.
Installation is straightforward and user-friendly, requiring only basic tools and minimal setup time. Once in place, the brake mechanism functions smoothly, helping prevent unintentional rolling and improving both safety and efficiency on the job.
When equipment security matters, trust Durastar for premium brake solutions. These top lock brake kits are a smart investment for any environment where control, safety, and performance are non-negotiable. Maintain stability, minimize risk, and maximize operational confidence with every lock.
4" diameter x 1-1/4" tread width. Verify your axle diameter and hub/bore length against your existing wheel before ordering.
Yes. Most wheels can be paired with a swivel or rigid rig to build a complete caster. Tell us your mount and load and we will spec the rig - request it on our bulk pricing page.
Rated for -20°F to 180°F. Operating outside the rated range can shorten wheel life and reduce capacity.
We accept purchase orders and offer Net 30 on approved accounts, ACH, and all major cards, plus tax-exempt ordering with a resale or exemption certificate. Volume discounts apply automatically; request a bulk quote for large or recurring orders. Stock items carry a 30-day return policy in unused condition (made-to-order items are non-returnable once production starts).
$8.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 1-1/4" |
| Load & Performance | |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Frame Material | Zinc Plated Steel |
4" x 1-1/4" Polyurethane Total Lock Caster – 300 lb | 1/2"-13 Stem | CasterHQ
4" x 1-1/4"
$110
4" Thermoplastic Rubber Swivel Caster – 250 lb | 1/2" Threaded Stem | CasterHQ
4" x 1-1/4" · 250 lbs
$17
4" x 1-1/4" Gray TPR Polyolefin Industrial Replacement Wheel – 250 lb | CasterHQ
4" x 1-1/4" · 250 lbs
$12
View all 4′ x 1-1/4′ casters & wheels →
Your selection is highlighted. Every option shares its wheel size and mount; a Direct fit tag means the same mounting plate — a drop-in replacement. Step up or down in load rating, all in-stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| — | 4" × 1-1/4" | — | — | $8.00 | Viewing | |
| 250 lbsHeavier duty | 4" × 1-1/4"Gray Rubber | Swivel | 5-1/8" | $17.00 | View → | |
| 250 lbsHeavier duty | 4" × 1-1/4"Gray Rubber | — | — | $12.00 | View → | |
| 250 lbsHeavier duty | 4" × 1-1/4"Gray Rubber | Swivel with Total Lock Brake + brake | — | $24.00 | View → | |
| 260 lbsHeavier duty | 4" × 1-1/4"Polyurethane | Swivel | 4-1/8" | $14.00 | View → |





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