Lexus RX Rear Springs: Specs, Fitment & Common Faults

Hybrid and non-hybrid versions carry genuinely different weight, and the rear spring rate reflects that.

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A Part That Fails Quietly, Then Suddenly

Months of gradual sagging with barely any symptom beyond a marginally lower ride height is the usual pattern for the Lexus RX's rear spring, right up until it fails suddenly at the coil's end with a clunk. If one rear corner looks lower than the other, that's the clue worth acting on.

Before you buy: hybrid vs non-hybrid and left/right side both affect fitment. Always confirm against your VIN before ordering.

Lexus RX Rear Springs: Watch: Replacing It

🎬 Watch: Lexus RX450h AL20 2015-2022 coil spring suspension repair by AirTec Bulgaria (Eng-subs)

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OEM Part Number: confirm via VIN — no aftermarket rear spring listed for this generation

Accuracy note: Covers the Lexus RX (2015-) as listed in the UK aftermarket catalogues. Rear coil springs are sold as a pair for the axle and should be replaced as a pair, because a new spring beside a tired one leaves the car sitting unevenly. The right spring depends on the engine and gearbox, the suspension type (standard, sport or heavy-duty) and, on some cars, the body style. The references below are UK aftermarket catalogue listings for this generation, labelled by brand with the fitment details the catalogue gives; carmakers rarely publish the genuine number against these, so match a genuine spring against your VIN if you want a guaranteed fit. genuinely worth knowing: rear springs are sold in left/right pairs matched to a specific rate marking — confirm the marking on your existing spring rather than assuming from trim or powertrain alone.

Rear coil springs (aftermarket)	No aftermarket rear coil spring listed for this generation — order genuine against your VIN
Genuine (OE) numbers quoted	None quoted in the catalogue listings — the genuine spring varies by engine, suspension type and body style, so order it against your VIN
Petrol/non-hybrid, standard rate	Genuinely a different spring from the hybrid version below — confirm powertrain and side before ordering
Hybrid	A genuinely different spring rate from the non-hybrid version, reflecting the different weight distribution of the hybrid drivetrain
F Sport, where fitted	A genuinely different, stiffer spring from standard trims

Replacing just one Lexus RX rear spring is a false economy: pairing it with an old, sagged spring on the other side produces uneven ride height and a noticeable handling bias.

Lexus RX Rear Springs: What It Does

The Lexus RX's rear end weight rests on the coil spring, which also absorbs the initial shock of a bump — a separate function from the shock absorber, not a replacement for it. Left sagged or broken, it lowers ride height, potentially skews headlight aim, and can become an MOT failure in severe cases.

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Lexus RX Rear Springs: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Rear Springs Guide for symptoms of a failing spring, confirming fitment against your VIN, and OEM vs aftermarket guidance.

More Lexus Rear Springs

The same part, covered across other Lexus models.