Burquip Anti-Sway Coupling Kit KF27 & KF30

Upgrade or service KNOTT overrun braking couplers with the Burquip Anti-Sway Coupling Kit KF27 & KF30, also designated as the Stabfix Coupling Kit. Engineered specifically as a replacement or retrofit stabiliser hitch head for heavy-duty braked couplers (KNOTT KF27 and KF30 series), this kit integrates internal friction damping elements to suppress trailer yaw (snaking) and pitching motions at highway speeds for gross vehicle weights ranging from 2,700 kg up to 3,000 kg.

Key Features & Benefits:

• Targeted Overrun Model Fitment: Engineered specifically for direct installation onto KNOTT KF27 (2,700 kg) and KF30 (3,000 kg) drawbar drawshafts, replacing standard ball coupling heads with an integrated anti-sway friction head.

• Integrated Friction Sway Damping: Compresses high-friction pads directly against the 50 mm tow ball upon depressing the top clamping lever, effectively arresting lateral trailer sway (yaw) and vertical bounce (pitch) caused by side winds, uneven pavement, and high-speed turbulence.

• High-Speed Safety Rating: Calibrated for heavy touring caravans, large horseboxes, and car transporters operating in the 2,700 kg to 3,000 kg GVM range.

• ETS System Compatibility: Fully certified and recommended for pairing alongside Electronic Trailer Stabilisation (ETS) systems for dual-layer mechanical and electronic sway management.

• Integrated Wear & Hitch Indicators: Built-in visual wear gauges allow operators to monitor friction pad wear over time and verify proper socket latching before transit.

• Complete Retrofit / Spares Kit: Supplied as a bolt-on head kit to service worn stabiliser heads or convert standard braked couplers to anti-sway specification without replacing the entire overrun housing.

Product Specifications:

• Component: Anti-Sway Stabiliser Replacement Head Kit

• Model Designation: Stabfix Coupling Kit KF27 & KF30

• Brand: Burquip (KNOTT System)

• Compatible Coupler Models: KNOTT KF27 (2,700 kg) and KF30 (3,000 kg) Braked Couplers

• Applicable GVM Range: 2,700 kg to 3,000 kg

• Coupling Head Type: 50 mm Anti-Sway / Stabiliser Ball Head

• Tow Ball Clearance Requirement: Minimum 35 mm clearance around the tow ball to ensure unrestricted movement of the clamping lever

• Operating Restrictions:

  • Tow ball must remain clean, degreased, and unpainted (dry ball operation) for friction pads to function correctly.

  • Not for use with rotating pin couplings lacking an anti-twist locking device.

• Category: Coupling Device Spares / Eye and Ball Couplers / High Speed

• Application / Fitment: Heavy Touring Caravans, Tandem-Axle Horseboxes, Vehicle Transporters, Heavy Commercial Freight Trailers equipped with KF27 / KF30 overrun units