Description
Allstate Trailer Spares R1809A — override coupling 4 hole 2 available at Alltools Geelong. Shop our full override coupling 4 hole 2 range in Geelong.
Allstate Trailer Spares
50mm Override Coupling — 4 Hole, 2 Tonne Rated, Dacromet Finish
Part No: R1809A | Barcode: 9343965000113 | Series: ASTSS Couplings
Override (surge brake) coupling for 50mm tow ball rated to 2 tonnes. Features a solid shaft and 4 bolt hole mounting pattern with Dacromet corrosion-resistant finish. Designed for trailers with hydraulic surge brake systems.
50mm Ball
2 Tonne Rated
Override / Surge
4 Hole Mount
Dacromet Finish
Suitable For
Hydraulic Surge Brake Trailers
Boat Trailers
Car Trailers
Medium Duty Trailers
Key Features & Benefits
- Override (surge) brake mechanism — when the tow vehicle brakes, the trailer pushes forward on the coupling which activates the hydraulic master cylinder, applying the trailer brakes proportionally to deceleration force.
- Solid shaft construction — heavy-duty solid shaft transfers the surge force reliably to the brake master cylinder for consistent, predictable braking.
- 2 tonne rated — rated to 2,000kg gross trailer mass (GTM), suitable for medium duty trailers including boat trailers and car carriers with hydraulic disc brakes.
- Dacromet finish — superior corrosion resistance compared to standard zinc plating, especially important for boat trailer couplings exposed to salt water.
- 4 hole mounting — four-bolt pattern provides a stronger, more secure mounting to the drawbar than 2 or 3 hole patterns.
When to Use This Coupling
The R1809A is required on any trailer with a hydraulic surge brake system. The override mechanism is what activates the trailer brakes when the tow vehicle slows down. If your trailer does not have surge brakes (i.e. it uses electric brakes, mechanical brakes, or no brakes), use the simpler R1803A standard coupling instead.
Authorised Australian Dealer — This product is sourced directly from Allstate Tooling Solutions Australia and is backed by full Australian manufacturer warranty and local support.
Product Specifications
| Part No. | Type | Mounting | Rating | Finish |
|---|---|---|---|---|
| R1803A | Standard | 2/3 Hole | 2TN | Dacromet |
| R1809A ★ | Override | 4 Hole | 2TN | Dacromet |
★ You are viewing the highlighted variant. Standard couplings for non-surge-brake trailers are also available.
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