Heavy-Duty 2-Blade 27" Parabolic Leaf Spring (900kg Pair Capacity / 10x45mm)

The Heavy-Duty 2-Blade 27" Parabolic Leaf Spring is a high-performance trailer suspension solution engineered to deliver superior shock absorption, smoother ride dynamics, and extended component longevity for commercial trailers, touring caravans, utility haulers, and marine boat trailers. Rated for a combined load capacity of 900 kg per pair, this 2-blade parabolic assembly serves as a modern, high-efficiency alternative to conventional multi-leaf spring packs, offering equivalent load-bearing capability to traditional 5-blade setups while drastically reducing unsprung weight.

Unlike conventional semi-elliptical multi-leaf springs that rub against each other along their full length, parabolic springs feature a tapered blade profile where the leaves only contact at the center clamp and ends. This design virtually eliminates inter-leaf friction, producing a progressive, supple spring rate that minimizes road bounce when towing empty or lightly loaded, while maintaining firm, stable roll control under full load. The open blade structure also prevents corrosive road salts, abrasive sand, and launch slipway mud from becoming trapped between leaves, making it an ideal suspension choice for coastal marine environments and demanding off-road routes.

Key Features & Benefits:

• High-Efficiency 2-Blade Parabolic Design: Engineered with tapered-thickness blades to provide optimal load distribution and progressive suspension deflection without the bulk of multi-leaf stacks.

• Equivalent 5-Blade Load Capacity (900kg / Pair): Directly replaces standard 5-blade 27" leaf springs, supporting 900 kg per axle set while significantly reducing overall chassis deadweight.

• Minimized Unsprung Mass: Substantially lighter than conventional multi-leaf packs, allowing the axle and tires to track uneven road surfaces more effectively for improved towing stability and tire life.

• Eliminates Inter-Leaf Friction: Leaves touch only at the center and mounting points, eliminating inter-leaf binding, squeaking, and internal friction for a noticeably smoother, softer ride.

• Corrosion & Debris Resistant Architecture: Open clearance between the blades prevents the buildup of road grime, abrasive sand, mud, and corrosive moisture that typically causes pack rust and premature leaf binding.

• Ideal for Marine & Coastal Towing: Outstanding performance on boat trailers subjected to frequent submersion and corrosive marine launch slipways, enabling thorough freshwater washdowns.

• Simplified Inspection & Long Working Life: Minimal contact areas reduce localized stress points and friction-induced leaf thinning, extending operational service intervals and simplifying field safety inspections.

Ideal Applications:

• Boat & Marine Trailers: Highly recommended for marine launch carriages and boat haulers where salt water and sand immersion rapidly corrode and seize conventional multi-leaf springs.

• Touring Caravans & Camper Trailers: Premium suspension upgrade providing a gentler ride that protects delicate interior caravan fixtures, electronics, and cabinetry from road shock.

• Commercial & Utility Trailers: Ideal for single-axle goods trailers, luggage haulers, and box trailers requiring smooth ride dynamics both fully loaded and unladen.

• Agricultural Implements & Farm Trailers: Durable, flexible suspension for mobile chemical bowsers, seed carts, and site machinery operating over rough farm tracks.

Product Specifications:

• Product Name: Parabolic Spring 2 Blade 27" 900Kg (10x45)

• Product Category: Suspension / Parabolic Leaf Springs

• Spring Type: Tapered Parabolic Leaf Spring

• Number of Blades: 2 Blades

• Spring Length (Eye-to-Eye / Overall): 27 Inches (~685 mm)

• Blade Dimensions: 10 mm Thickness x 45 mm Width

• Load Rating: 900 kg per Pair (450 kg per Individual Spring Assembly)

• Equivalent Conventional Pack: 5-Blade 27" Leaf Spring

• Application Compatibility: Trailers, Caravans, Boat Trailers, Horseboxes, Utility & Agricultural Vehicles

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware