Lexus CT200h Rear Springs: Specs, Fitment & Common Faults

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

Illustration for editorial purposes

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A Part That Fails Quietly, Then Suddenly

On the Lexus CT200h, the typical failure pattern here is gradual sag over months, barely noticeable beyond a marginally lower stance, followed by a sudden break at the coil's end with an audible clunk. If one rear corner appears to be sitting lower than the other, that's worth investigating.

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

Lexus CT200h Rear Springs: Watch: Replacing It

🎬 Watch: Coilover or Spring Install DIY on CT200h

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Lexus CT200h Rear Springs reference plate

OEM Part Number: confirm via VIN — rear coil springs (aftermarket) Kilen 55108 / Monroe SP4955

Accuracy note: Covers the Lexus CT200h (2011-) 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)	Kilen 55108; Monroe SP4955 (272 mm); KYB K-Flex RA5039; Lesjöfors 4249108
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

Fitting the Lexus CT200h's rear springs one at a time tends to backfire: pairing a fresh spring with a sagged original on the other side leaves the car sitting unevenly and biases handling to one side.

Lexus CT200h Rear Springs: What It Does

The Lexus CT200h's rear coil spring carries the weight of the car's back end and takes the first hit from any bump, working alongside — not instead of — the shock absorber. Once it sags or breaks, expect a lower ride height, possible headlight aim issues, and in severe cases, an MOT failure.

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Lexus CT200h 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.