Dobinsons Rear Leaf Springs for Toyota Hilux 2015-ON — Heavy Duty Performance

Lift height depends on which spring configuration you select from the six available options. The standard height option (L59-173-R) maintains factory ride height while increasing load capacity to 250-300kg. Raised height options include: 20mm lift with the light duty 3+3 leaf pack (L59-171-R), 45mm lift available in three variants for medium duty, heavy duty, and super heavy duty applications (L59-174-R, L59-175-R, L59-176-R), and 50mm lift with the comfort-focused parabolic 2+1 leaf design (L59-178-RP). Actual lift achieved may vary slightly based on existing vehicle condition, current load, and will settle by approximately 10-15mm after the initial 500km break-in period.

This complete kit includes 2 x Dobinsons rear leaf springs in your selected configuration, 4 x heavy duty U-bolts, a complete set of premium polyethylene bushes for both front and rear leaf spring mounting points, 2 x greasable shackles, and 2 x greasable pins with all necessary mounting hardware. The polyethylene bushes provide superior durability and low-friction operation compared to standard rubber bushes, while the greasable shackles and pins ensure long service life even in harsh Australian conditions. Everything required for a complete rear leaf spring replacement is included except for shock absorbers, which should be upgraded simultaneously for best performance and are sold separately.

Absolutely — these Dobinsons leaf springs are specifically engineered to handle the demands of heavy towing while maintaining excellent ride quality and vehicle stability. The heavier duty configurations (L59-175-R with 300-350kg capacity and L59-176-R with 580kg capacity) dramatically reduce rear-end sag when towing, maintaining level vehicle geometry which is critical for safe handling, headlight aim, and weight distribution. The increased spring rate provides superior control over load transfer during acceleration, braking and cornering with a loaded trailer. For variable towing where you frequently alternate between laden and unladen driving, consider the medium or heavy duty options paired with adjustable airbag suspension for ultimate versatility and the ability to fine-tune rear height and support based on tow ball weight.

Control arm upgrades are not mandatory for the standard height or 20mm lift configurations, though they do provide additional benefits in terms of improved articulation and enhanced durability. For the 45mm and 50mm lift options, upgraded control arms become highly recommended to restore optimal suspension geometry, maintain proper CV joint angles, and prevent accelerated wear on driveline components. Lifting the rear of your Hilux without addressing front suspension geometry can create handling imbalances and place stress on steering components. We recommend considering a complete suspension package that includes matching front lift components, shock absorbers, and control arms engineered to work together as a complete system for best overall performance and vehicle safety.

Yes, a full four-wheel alignment is absolutely mandatory after installing any leaf spring kit, regardless of lift height. Replacing rear leaf springs affects rear axle position, pinion angle, and overall vehicle ride height which can impact front suspension geometry and steering alignment. Proper alignment ensures your Hilux tracks straight, maintains safe and predictable handling characteristics, prevents premature and uneven tyre wear, and optimizes steering response. The alignment should be performed after installation but ideally after the initial 500km break-in period when the springs have fully settled to their final ride height, though a preliminary alignment at installation followed by a final check after settling is the preferred approach.

While you must select one specific spring configuration at purchase, Dobinsons offers six distinct options precisely so you can match the spring rate to your typical constant accessory load. The spring rate you choose should be based on the combined weight of all permanent accessories and typical payload your Hilux carries most of the time — not occasional maximum loads or empty weight. Common mistakes include selecting springs too soft (resulting in excessive sag under load) or too stiff (creating harsh ride quality when unladen). Calculate your constant rear accessory weight including canopy/tray, fuel tanks, dual batteries, drawers, tools, camping gear, and typical payload, then select the configuration rated for that load range. For highly variable loads, the medium duty option paired with adjustable airbags provides the best versatility.

The rear lift provided by these leaf springs (20mm to 50mm depending on configuration) creates additional clearance in the rear wheel arches, allowing fitment of larger diameter tyres without rubbing during compression and articulation. Combined with appropriate front suspension lift, most Hilux N80 models can accommodate 32-33 inch tyres with the 45-50mm lift configurations, though actual clearance depends on wheel offset, tyre width, and specific tyre profile. The 20mm lift option provides modest improvement for slightly larger tyres, while standard height maintains factory tyre clearances. Keep in mind that wheel arch trimming or aftermarket flares may still be required for maximum tyre sizes, and that larger, heavier tyres add unsprung weight which may require recalculating your ideal spring rate to maintain optimal ride quality and load capacity.

Dobinsons backs these leaf springs with comprehensive manufacturer warranty coverage against defects in materials and workmanship, demonstrating their confidence in the quality and durability of their Australian-tested engineering. The specific warranty period and terms are provided with your purchase and typically cover failure due to manufacturing defects under normal operating conditions. Warranty does not cover damage from accidents, improper installation, modifications, overloading beyond rated capacity, or normal wear from extended use. To maintain warranty validity, professional installation is recommended with all components torqued to specification, and the vehicle should not be operated beyond the selected spring's rated constant load capacity. Keep your proof of purchase and installation records should you need to make a warranty claim.

Absolutely — all Dobinsons leaf spring configurations are engineered to deliver excellent on-road ride quality and handling characteristics suitable for daily commuting, highway touring, and city driving, not just extreme off-road use. The lighter duty and parabolic options provide SUV-like comfort when unladen or lightly loaded, while even the heavy and super heavy duty configurations maintain surprisingly compliant ride quality compared to competitor springs thanks to Dobinsons' advanced leaf profiling and material selection. The key to achieving optimal daily driving comfort is selecting the correct spring rate for your typical constant load — springs that are too stiff for your actual load will ride harshly, while springs too soft will sag and wallow. Paired with quality shock absorbers matched to your selected spring rate, these Dobinsons leaf springs deliver a refined, controlled ride across all driving conditions from urban streets to remote highways.