Mighty Mule SW4000XL/4200XL Secondary Swing Gate Opener
The Mighty Mule SW4000XL/4200XL Secondary Swing Gate Opener is a dual swing gate opener listing for a 4000XLS-family two-leaf gate system. A proper dual setup uses a primary operator and master control box on one leaf, plus a matching secondary arm on the other leaf. The control system coordinates both arms so the gate leaves open and close in the correct order while still responding to access controls, obstruction sensing, auto-close settings, gate lock commands, and charging input.
This item needs careful review because older product pages and customer searches often mix SW4000XL, SW4000XLS, SW4200XL, and SW4200XLS names. Those model generations should not be treated as automatically interchangeable. Before ordering or uploading this listing, confirm whether the actual product is an XLS dual kit, an older XL dual kit, or a replacement/add-on second arm. The safest fitment path is to match the control box, operator arm labels, and parts diagram.
When installed correctly, the 4000XLS/4200XLS family is commonly used for heavier residential, ranch, estate, and light commercial swing gates with each leaf up to 20 ft. long and up to 1000 lb. Good gate hardware is critical. Each leaf should swing freely, close squarely, and have proper stops. A dual opener will not correct gate sag, weak posts, misaligned hinges, or a gate lock mounted without the correct sequence.
Compatible With
Select 4000XLS-family dual swing gate systems from Linear Pro Access, GTO PRO, and Mighty Mule Pro; two-leaf vehicular swing gates with each leaf up to 20 ft. or 1000 lb. when the gate and post structure meet the installation requirements; primary PRO-SW4000XLS operator with matching PRO-SW4200XLS second arm; transformer charged or compatible solar charged 12 VDC systems; compatible access controls, gate locks, exit devices, and safety accessories approved for the control board. Confirm the exact kit contents and XL versus XLS generation before upload or purchase.
Features & Specifications
| Manufacturer | Linear / GTO / Mighty Mule |
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| Product Type | Dual swing gate opener kit/reference |
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| Part Number | SW4000XL-Dual |
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| Application | Dual vehicular swing gate automation |
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| Compatible Operator Type | Primary 4000XLS with matching 4200XLS second arm |
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| Voltage | 12 VDC system |
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| Maximum Gate Size | Up to 20 ft. long and up to 1000 lb. per gate leaf when installed properly |
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| Gate Speed | Typically 18 to 20 seconds |
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| Safety Monitoring | UL 325 compliant system with inherent obstruction sensing; safety devices must not be bypassed |
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| Included Components | Kit contents vary by listing and should be confirmed; commonly references primary operator, second arm, control equipment, charging components, receiver/transmitter, and mounting hardware |
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| Notes | Product titles may contain XL and XLS variations; verify the exact generation before ordering |
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Also Known As / Related Part Numbers
SW4000XLS-Dual, SW4000XL-Dual, PRO-SW4000XLS, SW4000XLS, PRO-SW4200XLS, SW4200XLS, PRO-SW4002XLS, GTO PRO 4000XLS/4200XLS, Mighty Mule Pro 4000XLS/4200XLS, Linear 4000XLS dual swing gate opener, Linear Pro Access dual 4000XLS kit.
Technician Note
For dual installations, check both leaves and the master/secondary assignment before ordering. If the gate lock is mounted on the wrong leaf or the sequencing is incorrect, the system may close out of order or fail to latch even though both arms are working.
Before Ordering Checklist
- Confirm exact model generation: XL or XLS.
- Verify whether this listing is a complete dual kit or a dual-kit reference.
- Confirm primary and secondary arm part numbers.
- Check gate length, weight, hinge condition, post strength, and stops for both leaves.
- Review lock, keypad, receiver, vehicle detector, and safety accessory requirements.
- Confirm solar or transformer charging requirements for expected daily cycle count.
Professional Advisory
Dual swing gate operators must be installed and adjusted so both gate leaves move safely and consistently. Do not bypass safety devices or force a mismatched arm/control-board combination. Use a qualified gate technician for heavy gates, mixed-generation equipment, or unsafe gate movement.
Product Questions
What operators make up this dual gate setup?
A 4000XLS dual setup commonly uses a PRO-SW4000XLS primary operator with a matching PRO-SW4200XLS secondary arm.
Is this the same as an older SW4000XL dual system?
Not necessarily. XL and XLS references are often confused, but the XLS generation uses updated parts and should be matched by model number and parts diagram.
What gate size is this dual system for?
The 4000XLS/4200XLS family is commonly used for dual vehicular swing gates up to 20 ft. and 1000 lb. per leaf when properly installed.
Does a dual gate system need positive stops?
Dual gates should close against proper stops, especially when a gate lock is used. Poor stops or poor sequencing can cause lock and closing problems.
What should be verified on a dual kit listing?
Confirm primary operator, secondary arm, control box, receiver, transmitter, charging equipment, mounting hardware, cable length, and whether the listing is XL or XLS generation.
