Best Coilovers for the Lexus IS300 & IS250
If you're hunting for the best coilovers for the Lexus IS — whether you're running an early IS300 (XE10, sold as the IS200 outside North America) or the later IS250 (XE20) — you've landed in the right place. The Lexus IS is one of the most rewarding rear-wheel-drive platforms to modify: light, balanced, and blessed with a chassis that responds to good damping. The catch is that the factory ride is soft and the OEM struts wear out. A proper coilover system fixes the height, the body roll and the vague turn-in all at once. Below we break down the Thunder Lane options for both generations, how they behave on the street versus the track, and how to pick the right tier.
Why the Lexus IS benefits from coilovers
Both the XE10 and XE20 share the traits that make the IS a tuner favourite: near 50/50 weight distribution, a wishbone-influenced multilink rear and a long-nose RWD layout that loves to rotate. From the factory, though, they sit tall and roll on soft springs and undersized dampers. That's fine for a commute, but it robs the car of the composure enthusiasts want. Fitting coilovers lets you drop the centre of gravity, dial in the corner balance, and match the damping to how you actually drive — the single biggest handling upgrade you can make to either car.
Because the IS is such a popular grip and drift base, valving matters. A one-size body-in-a-box coilover valved for a generic sedan will feel harsh and unsettled. Every Thunder Lane kit is hand-assembled in Poland, built to order and valved to your exact spec — street, track, time attack, autocross or rally — with spring rates finalized with you before production begins.
Which Lexus IS coilover should you pick?
Thunder Lane offers three routes across the two generations. Your choice comes down to how adjustable you want the damping to be and which chassis you're on.
IS300 (XE10, 1999–2005)
For the classic XE10 there are two tiers. The IS300 TL-ONE coilover system is the single-adjustable option: 20 clicks of rebound damping let you firm the car up for a track day or soften it back down for the drive home, all from one easily reachable adjuster. It's the sweet spot for daily-driven and weekend cars, and for most drift builds it's all the adjustability you'll ever touch.
If you're chasing the limit — serious track, time attack or a competition drift entry — step up to the IS300 TL-PRO coilover system. This is a true 3-way: independent rebound plus separate low-speed and high-speed compression, running remote reservoirs. That means you can control body-motion and mid-corner support separately from how the car reacts to kerbs and bumps — the kind of tuning latitude that pays off when you're chasing tenths.
IS250 (XE20, 2005–2013)
For the later XE20 chassis, the IS250 TL-ONE coilover system brings the same single-adjustable, 20-click rebound philosophy to the second-gen car. It's the ideal balance of adjustability, ride quality and value for a car that pulls double duty as a daily and a canyon weapon.
Not sure which generation you're looking at? Browse the full Lexus collection to confirm your chassis, or compare the entry TL-ONE range against the flagship TL-PRO range.
What's included and key specs
Every Thunder Lane IS kit is built on a 46mm monotube, electroplated, fully rebuildable body — so when the car has done tens of thousands of hard miles, you service the damper rather than bin it. Each coilover ships with its own CVP and PVP dyno graphs, so you can see exactly how your dampers were valved rather than trusting a marketing sticker. The TL-ONE gives you 20-click rebound adjustment; the TL-PRO adds independent low- and high-speed compression and remote reservoirs. Spring rates are finalized with you before anything is assembled, and every kit is covered by a 6-month warranty.
Ride height and street-vs-track behaviour
Height is adjustable across the range, so you can set an aggressive static drop for shows and photos or a more usable everyday stance that still clears driveways. Set the perch sensibly and the IS keeps genuinely usable ground clearance while losing the 4x4 gap.
On the street, a TL-ONE valved for road use rides firm but composed — tied-down without beating you up on broken tarmac. Wind the rebound in and the same car tightens up noticeably for a track day. If your weekends are spent lapping or chasing time-attack numbers, the TL-PRO's separate high-speed compression lets you soak up kerbs while still supporting the car mid-corner — something a single-adjustable simply can't split apart.
Fitment
These kits are chassis-specific: the TL-ONE and TL-PRO systems fit the IS300 XE10 (1999–2005), and the TL-ONE fits the IS250 XE20 (2005–2013). Because each set is built to order, it's worth confirming your exact year and any suspension quirks when you order so the valving and spring rates are matched to your goals.
Lexus IS coilover FAQ
Are these coilovers good for drifting an IS300?
Yes. The RWD IS300 is a hugely popular drift base, and the TL-ONE's 20-click rebound covers most drift setups. If you're building a competitive car and want to separate compression from rebound, the TL-PRO 3-way gives you finer control.
Will coilovers ruin the ride on my daily IS250?
No. Because the IS250 TL-ONE is valved to your spec, a street setup rides firm but composed rather than crashy, and you can soften the rebound for daily driving.
What's the difference between TL-ONE and TL-PRO?
TL-ONE is single-adjustable (20-click rebound). TL-PRO is a true 3-way — independent rebound plus low- and high-speed compression with remote reservoirs — aimed at track, time attack and competition use.
Can I adjust the ride height myself?
Yes, height is adjustable on all IS kits so you can dial in your stance and ground clearance to suit the car's use.
Ready to build your IS kit?
Whether you want a composed street setup or a competition-ready 3-way, your kit is hand-assembled in Poland and valved to your exact spec. Configure your Lexus IS coilovers today and get CVP + PVP dyno graphs with every set.
