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.
Experience enhanced control and stability with Durastar Top Lock Brake Kits built specifically for 4" x 2" caster wheels in Series 30, 34, 35, 40, and 46. These reliable brake kits add a crucial layer of safety and functionality to your mobility systems, offering dependable wheel locking to prevent unwanted motion on any surface.
The top lock brake design engages easily, allowing operators to quickly secure equipment with minimal effort. Engineered for performance in industrial, warehouse, medical, and material handling settings, this kit is a practical upgrade for carts, racks, and mobile equipment.
Built from durable materials, these brake kits withstand heavy-duty use while helping to maintain load stability and worker safety. Whether you’re upgrading existing casters or customizing new builds, the Durastar brake kit offers an efficient and long-lasting braking solution.
Optimize your caster performance and workplace safety with these high-quality top lock brake kits. Designed for quick integration and dependable operation, they’re the smart choice for enhancing mobility control across your facility.
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.
Enhance the safety and functionality of your caster systems with the Durastar Top Lock Brake Kits, engineered for use with 4" x 2" wheels across Series 30, 34, 35, 40, and 46. Whether you're upgrading mobile equipment or enhancing stability in a demanding environment, this brake kit delivers performance you can trust.
The top lock mechanism offers a secure and simple way to lock caster wheels in place, ensuring equipment stays stationary when needed. Perfect for carts, racks, and mobile workstations, the brake engages directly with the tread to reduce movement, improve safety, and protect surrounding assets.
Constructed from high-quality, heavy-duty materials, this brake kit is built for long-term durability in industrial and commercial applications. It’s ideal for manufacturing floors, warehouses, medical environments, and anywhere mobility needs to be combined with control. With a tool-free installation design, operators can easily retrofit or replace components without costly downtime.
Durastar’s commitment to excellence means each brake kit is manufactured to exacting standards, supporting workplace safety and efficiency. Backed by industry experience and engineering reliability, these brake kits provide consistent performance for both new and existing caster systems.
When performance, safety, and reliability matter, Durastar’s Top Lock Brake Kits are the smart solution. Engineered for precision and built for demanding environments, these kits keep your equipment stable and your operations running smoothly.
4" diameter x 2" 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 | 2" |
| Load & Performance | |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Frame Material | Zinc Plated Steel |
4" ATX Solid Thermo Rubber Rigid Flat Free Caster | CasterHQ
4" x 2" · 200 lbs
$39
4" Thermo Rubber Swivel All Terrain Caster – Off Road | CasterHQ
4" x 2" · 250 lbs
$40
4" x 2" Thermo Rubber Rigid Caster – 300 lb | 4" x 4-1/2" Top Plate | CasterHQ
4" x 2" · 300 lbs
$26
View all 4′ x 2′ 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" × 2" | — | — | $8.00 | Viewing | |
| 200 lbsHeavier duty | 4" × 2"Gray Rubber | Rigid | 5-5/8" | $39.00 | View → | |
| 250 lbsHeavier duty | 4" × 2"Gray Rubber | Swivel | 5-5/8" | $40.00 | View → | |
| 300 lbsHeavier duty | 4" × 2"Gray Rubber | Rigid | 5-5/8" | $26.00 | View → | |
| 300 lbsHeavier duty | 4" × 2"Rubber | — | — | $20.00 | View → |





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