The Nissan Navara spans three very different utes: the leaf-sprung D22, the D40 (2005-2015) with IFS and rear leafs, and the NP300/D23 (2015-on) - the one that made headlines by putting coil springs under a dual-cab ute's rear end. That coil rear gives the NP300 a great unladen ride and the best-known sag problem in the class. Here is each generation's weak point and the proper fix.
The 2015-on NP300 dual cab runs a five-link coil rear tuned soft for comfort, with little constant-load margin. A canopy and drawers use most of it; add camper trailer ball weight and the rear can sit dramatically low. Nissan revised the coils under a service bulletin and later moved to dual-rate springs, but owners carrying real touring loads still end up at the same place: aftermarket constant-load rear coils. A matched kit like the Dobinsons Monotube IFP NP300 kit pairs correctly rated coils with monotube damping. Airbag helpers suit variable van weights on top of the right coil - not instead of it.
The D40 (2005-2015) behaves like a conventional IFS ute: rear leafs sag under permanent load, shocks fade towing - fixed with load-rated springs and quality damping in a kit like the Monotube Quick-Lift D40 or the adjustable MRA 2" D40 kit. The older D22 is simpler and tougher - torsion bar front, leaf rear - and the Nitro Gas 2" D22 kit covers the usual tired-spring, tired-shock refresh.
D40 and NP300 fronts are IFS: about 2" aligns on factory arms; beyond that, upper control arms restore caster/camber range - the Blackhawk HD upper control arms cover both D40 and NP300 - and a diff drop protects CVs at 3". Alignment after fitting and after settle-in, always.
Suspension lifts beyond your state's allowable limit (commonly 50mm without certification, less once combined with larger tyres) may require engineering approval under the applicable light vehicle modification rules (VSB14/NCOP). Check your state's requirements before buying - an uncertified over-height lift can affect insurance and roadworthiness. We flag this on every 3" and 4" capable kit we sell.
Partially - revised coils under a 2018 service bulletin and dual-rate springs on later Series models improved it, but owners with permanent touring loads still need constant-load aftermarket coils.
Conversions exist but are engineering-approval territory in most states. Correctly rated coils solve the problem for almost every real-world load without the compliance headache.
Some front-end components interchange (the Blackhawk UCAs fit both), but springs and shocks are generation-specific - and Spanish-built vs Thai-built D40s can differ too, so confirm your exact build.
Tell our team your load and build date or browse all Navara kits.
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