If you bought a T598, you own a pedal set whose brake measures how far your foot moves. Thrustmaster sells the fix for $179.99. It's called the Raceline LC Upgrade, it swaps in a load cell brake, and it is the single most common question a T598 owner asks after the first week.
I need to be straight with you before anything else: I have not driven this kit. Nobody has written a review on Thrustmaster's own store either. That is not an oversight on my part — it is the story, and I'll get to it.
Everything below comes from Thrustmaster's own product pages, checked on 14 September 2026.
What the Raceline LC Upgrade actually is
It is a replacement brake pedal plus the hardware to rebuild your pedal set around it.
Fit it to a Raceline Pedals LTE or Raceline Pedals III set and Thrustmaster says you end up with a "Raceline Pedals III LC". Same chassis, same throttle, new brake — and a brake that works on a completely different principle.
The standard Raceline brake reports position. This one reports pressure. That distinction is the whole reason to spend the money, and I've written the long version in load cell pedals. Short version: your leg reproduces a force far more reliably than it reproduces a distance. Every braking trace an engineer ever put in front of me was pressure against time. Nobody plots pedal travel.
One correction to Thrustmaster's own marketing, because it matters. The LC Upgrade page says the load cell is "more realistic and precise than a potentiometer." The Raceline pedals you'd be upgrading do not use potentiometers — Thrustmaster's own Raceline Pedals III page says they run frictionless H.E.A.R.T. hall effect sensors with no wear over time. So you are not replacing a cheap worn-out pot. You are replacing a good travel sensor with a force sensor. Different axis, not a quality fix.
What's in the box, and what isn't
Thrustmaster's box list:
- 1 × LC brake pedal
- 1 × metal top plate for 3 pedals
- 1 × gas metal pedal head, 1 × clutch metal pedal head (anthracite grey)
- 1 × clutch spring
- 1 × carpet grip non-slip pad
- 2 × 2.5 mm to 3.5 mm pedal-to-pedal cables, 1 × RJ45 pedal set cable, 1 × triple 3.5 mm jack to RJ12 cable, 1 × USB-C pedal set cable
- 1 × Torx wrench, warranty and instruction flyers
The whole kit is 350 × 360 × 210 mm and 2,320 g.
Read that list again and notice what is missing: a third pedal body. Three-pedal plate, clutch head, clutch spring, two daisy-chain cables — no clutch pedal.
The parts only add up one way: on a two-pedal LTE set, the brake you displace becomes the clutch, wearing the included head and spring. That fits Thrustmaster branding the result "Pedals III LC" — but it never says so on either product page. If a working clutch is why you're buying, confirm it with support before you order.
If you already own Raceline Pedals III, you're paying for a three-pedal plate and two pedal heads you already have. The brake is the only part you need.
The numbers that matter
The cell is rated to 220 lb / 100 kg at 24-bit resolution, over an 11° pedal travel angle.
Eleven degrees is short. That is the point — a load cell brake is meant to feel like a hard pedal you lean on, not a lever you sweep. If you've spent a year braking by distance, your first session will be a mess of lock-ups until your calf recalibrates. Give it a week of deliberate practice before you judge it, and go read trail braking again afterwards, because a pressure brake is what finally makes that technique repeatable.
Brake force is adjustable from 55–220 lb / 25–100 kg with no tools, using four configurations built from three springs and an elastomer buffer. A preload dial fine-tunes either side of whichever configuration you pick, in increments of ±11 lb / 5 kg.
That range is generous. 25 kg is soft enough for a desk setup where you'd otherwise push the pedals into next week; 100 kg is stiffer than most people can hold for a stint. The rule I give people for any load cell: start a rigid cockpit mid-range, go firmer only once you stop over-braking.
Software: Race Dash or the PC Panel
Dead zones, per-pedal travel and response curves — Thrustmaster calls the curve tool the EQUALIZER — are set either on the T598's Race Dash screen or in the My Thrustmaster Panel software on PC.
Worth flagging for Xbox owners: the T598 review turned up that Thrustmaster's Xbox product page marks Race Dash "(PC only)" while the PlayStation page does not. Update: that footnote sits under GEAR JOLT and the in-game race-info display specifically, not under the basic settings-adjustment line — so dead zones and the EQUALIZER curve should still be tunable from the Xbox unit's own screen. The My Thrustmaster Panel guide has the full reasoning plus the firmware versions that added the curve tool to Race Dash in the first place. (The Panel is the PC desktop software, a different thing from the My Thrustmaster mobile app.)
Order of operations with any load cell, this one included: spring stack first, curve second. A curve that flatters a wrong spring just hides the problem.
Compatibility — including the bit nobody quotes
On consoles, it works with Thrustmaster force feedback bases on PS5, PS4, Xbox One and Xbox Series, excluding the T500, via the RJ45 cable and the included RJ12 converter.
On PC (Windows 10/11), Thrustmaster's own wording is that it is compatible with all racing wheel bases via USB connection.
Read that again, because it is the most valuable line on the whole page and the coverage I've seen gets it wrong — one report narrowed it to Thrustmaster bases on PC. Thrustmaster says all of them. The pedal set carries its own USB-C cable, so on PC it is a standalone USB device. A Fanatec, MOZA or Logitech base does not care. If you ever move brands — and plenty of people do, see the four-brand comparison — the pedals come with you.
One more inconsistency: the Raceline Pedals III page lists Xbox One and Xbox Series in its key points and platform icons, then says in its description that the set works on "PS5, PS4 and PC". Same page, two answers. Trust Thrustmaster's support compatibility checker over either.
Price, and the catch
$179.99 on Thrustmaster's US store. Traxion reported €139.99 in Europe when the kit was announced on 8 April 2026.
Here is the problem. On 14 September 2026 — five months after launch — the Raceline LC Upgrade is listed out of stock on Thrustmaster's own store, it still carries the "New" badge, and the review section still says "Be the first to review this product." Thrustmaster's reseller module lists exactly one US retailer for it: Amazon. It said the same thing when I checked on 9 September.
For contrast, the T-LCM pedals — Thrustmaster's existing three-pedal load cell set — are $249.99 and show ten US retailers on the same site. Raceline Pedals III are $149.99 and in stock.
So the buying maths, at today's prices:
| Route | Cost | Pedals |
|---|---|---|
| Raceline Pedals III + LC Upgrade | $329.98 | 3, load cell brake |
| T-LCM | $249.99 | 3, load cell brake |
| LC Upgrade alone (you own Raceline already) | $179.99 | 3, load cell brake |
The T-LCM is the older design and its cell is also rated to 100 kg. Thrustmaster publishes 24-bit for the Raceline LC sensor; for the T-LCM it publishes 16-bit — 65,536 values per pedal — for the H.E.A.R.T. sensors and no bit depth for the load cell at all, so that is not a clean like-for-like comparison and I won't pretend otherwise. Thrustmaster's own compatibility checker lists the T598 as a recommended base for the T-LCM, so that route is open to T598 owners too.
Should you buy it?
If you already own Raceline pedals: yes, when you can actually get one. $179.99 to convert the weakest part of a wheel Thrustmaster still lists at $599.99 into a proper pressure brake is the best value upgrade available to you, and it beats buying torque you can't use. Fix pedals before newton-metres — that order has never changed.
If you're starting from zero and you want a Thrustmaster load cell this month: buy the T-LCM. It's $80 cheaper than the Pedals III plus upgrade route, it's a three-pedal set out of the box, and ten shops have it. Waiting five months for a kit to come back into stock is not a plan.
If you're on PC and brand-agnostic, widen the search. Logitech's RS Pedals make the same argument from the other side of the market, and the RS50 ecosystem is worth a look before you commit.
And be honest about where your time goes. A load cell will not find you a second on its own. The technique it enables will — start with ACC braking technique and put the laps in.
I'll update this page the day it's back in stock and the first real reviews land.
FAQ
How much is the Thrustmaster Raceline LC Upgrade?
$179.99 on Thrustmaster's US store as of 14 September 2026. Traxion reported €139.99 in Europe at the April 2026 announcement. Thrustmaster's own reseller list shows a single US retailer, Amazon, also at $179.99.
Is the Raceline LC Upgrade in stock?
Not on Thrustmaster's US store on 14 September 2026. It is marked out of stock and has no customer reviews yet, five months after launch. Check before ordering anywhere else, and be sceptical of listings that promise immediate delivery.
Does it fit Raceline Pedals LTE?
Yes. Thrustmaster lists both Raceline Pedals LTE and Raceline Pedals III as compatible, and calls the result a Raceline Pedals III LC either way.
Does the kit include a clutch pedal?
No. The box has a three-pedal top plate, a clutch pedal head and a clutch spring, but no third pedal body — on a two-pedal LTE set the displaced brake is what becomes the clutch. Thrustmaster does not state this explicitly, so verify with support if the clutch is the reason you're buying.
Will the pedals work with a Fanatec, MOZA or Logitech base?
On PC, yes. Thrustmaster says the upgraded set is compatible with all racing wheel bases on Windows 10/11 via USB. On consoles it needs a Thrustmaster force feedback base, and the T500 is explicitly excluded.
How hard is the brake?
Adjustable between 55–220 lb / 25–100 kg using three springs and an elastomer buffer, plus a preload dial worth ±11 lb / 5 kg. The cell reads up to 220 lb / 100 kg at 24-bit resolution over 11° of travel.
Should I buy this or the T-LCM?
If you already own Raceline pedals, the upgrade at $179.99 is cheaper and keeps your chassis. If you own nothing, the T-LCM at $249.99 undercuts the $329.98 you'd pay for Raceline Pedals III plus the upgrade, and it's actually available.