BC Racing Coilovers for the Lexus IS300

The Lexus IS300 blends luxury and rear-wheel-drive performance in a compact sedan, and BC Racing coilovers are the most direct way to unlock its handling potential. Engineered for superior control and responsiveness, they use a monotube damper design for faster, more consistent adjustments and offer 30 levels of damping force so you can tune compression and rebound from full soft to full stiff. Full-length height adjustment lets you set anything from a near-stock ride to a sporty, lowered stance while retaining suspension travel. The result is an IS300 that feels sharper and more planted without losing the everyday comfort that makes it such a usable sedan.

Why the IS300 Rewards a Coilover Upgrade

The IS300 has a genuinely good rear-wheel-drive chassis, but the factory suspension prioritizes comfort over control, which shows up as body roll when you drive it hard. BC Racing coilovers fix that. Fully threaded, full-length shock bodies let you set ride height independent of spring preload, so you keep full suspension travel instead of trading it away for a lower stance. The 30-way adjustable damping lets you dial in compression and rebound to reduce body roll and improve grip through corners while keeping the highway ride settled. The IS300 ends up tighter and more connected, yet still comfortable enough to daily.

Choosing Your BC Racing Series: BR, DS, or ER

BC Racing offers three series for the IS300 so you can match the coilover to how you drive. The BR series is the streetable all-rounder, with 30-way combined compression and rebound adjustment and linear valving that keeps the ride livable while sharpening the chassis. The DS series adds digressive valving for sharper low-speed control and leans toward track use. The ER series separates compression and rebound through external reservoirs for dedicated track and drift builds. Custom spring rates come at no extra cost, Swift Spring upgrades are offered, and camber-adjustable or pillowball top mounts are available on applicable fitments.

Fitment, Support, and the Springrates Guarantee

Every BC Racing coilover for the IS300 is a monotube, fully rebuildable design backed by a two-year warranty handled through BC Racing North America. Because the IS300 uses a divorced rear, a True Rear option is available, and our team can help you choose the right series, spring rate, and rear configuration for your build.

At Springrates, we've been an authorized BC Racing retailer since 2005. If you're deciding between series, our coilover comparison guide breaks down every option, and our team is here to help. We'll give you a straight answer.

Read more


FAQs

Are BC Racing coilovers good for the Lexus IS300?

Yes. The IS300 has a capable rear-wheel-drive chassis that is held back by a soft factory ride, and BC Racing coilovers sharpen it with full-length height adjustment and 30-way damping. You get flatter cornering and more precise control while keeping enough comfort to enjoy the sedan every day.

Which BC Racing series is best for an IS300 — BR, DS, or ER?

The BR series suits most IS300 owners, balancing a streetable ride with real handling gains through its 30-way damping. Choose the DS series if you want sharper low-speed control for track days, or the ER series for a dedicated track or drift build that benefits from separate compression and rebound tuning.

How low do BC Racing coilovers go on the IS300?

BC Racing coilovers give the IS300 a wide, fully adjustable ride-height range, so you can run a mild drop or a more aggressive lowered stance. The full-length, threaded shock bodies let you set height while preserving suspension travel, so the car stays composed rather than harsh at its new ride height.

What is the difference between a standard and a True Rear setup on the IS300?

The IS300 uses a divorced rear, where the factory spring and shock are separate. A standard BC Racing kit works within that layout, while the True Rear option replaces the divorced setup with a full rear coilover for one-piece height and damping adjustment. True Rear gives the cleanest adjustability and stance, and our team can confirm which configuration is right for your car.

Can I daily drive my IS300 on BC Racing coilovers?

Yes. The BR series is built to be streetable, and its 30-way damping lets you soften the ride for commuting or firm it up for spirited driving. Many IS300 owners run BC Racing coilovers as their everyday setup and simply adjust the damping to match the road.

Do BC Racing IS300 coilovers come with camber plates and bump stops?

BC Racing coilovers include bump stops and a dust boot to protect the dampers, and camber-adjustable or pillowball top mounts are available on applicable IS300 fitments. These let you dial in front camber for better tire contact and turn-in once the sedan is lowered.

Are BC Racing coilovers rebuildable, and what warranty do they include?

Yes. BC Racing coilovers use a monotube design that is fully rebuildable, so they can be serviced or revalved instead of replaced, which extends their lifespan and value. They are backed by a two-year warranty handled through BC Racing North America.

Do I need an alignment after lowering my IS300?

Yes. Changing ride height alters the suspension geometry, so an alignment is recommended after installing coilovers. A proper alignment protects your tires and ensures the IS300 handles and tracks the way it should at its new height.