What Load Cell Fits a Logitech G29 or G923 Pedal Set?

This page is built from manufacturer spec sheets, product-support pages, and named community sources rather than first-hand use — every figure below is attributed to where it came from. If you've searched "what load cell fits my G29/G923 pedals," there are really only two honest answers, and they lead to very different budgets.

Route one keeps your stock Logitech pedal box and swaps the brake's internal sensor and spring stack for a load-cell-style mod kit. Route two retires the stock pedal box entirely for a purpose-built load-cell pedal set. Neither is a straight drop-in with every wheelbase or console, so the compatibility details matter more than the marketing copy.

Route 1: Load-Cell Mod Kits for the Stock Pedal Box

A cottage industry of small sim-racing shops sells brake mod kits built specifically for the Logitech G25/G27/G29/G920/G923 pedal family. One example is 3DRap's Brake Pedal MOD, which 3DRap lists for the G25/G27/G29/G920/G923 pedals: a shape-memory elastomer insert that makes the brake resist progressively harder the further you push. Be clear on what that does and doesn't do — it changes the FEEL so you brake by pressure, but the stock potentiometer still measures travel; it is not a load cell. Kits that add a genuine force sensor exist in the community, but verify any seller's claims on its own product page before buying.

Installing a kit generally means opening the brake pedal housing, removing the stock return spring and (depending on the kit) the rubber/plastic travel-limiting pads, and fitting the replacement piston-and-spring assembly in their place. 3DRap's instructions note the swap uses basic hand tools, with a small included tool for threading the preload ring — no drilling, cutting, or soldering on the kits that keep the stock sensor wiring intact. Most of these kits are reversible, so you can put the stock internals back if you resell the wheel.

The limits are real, and they're the reason people eventually move on to Route 2. A mod kit changes the feel of the brake, but it's still bolted to the same light, flexing plastic pedal faceplate and chassis that shipped with the G29/G923. Under hard, repeated braking that plastic base can flex and shift on the floor in a way a steel-chassis pedal set won't. The mod kit also only touches the brake — your throttle and clutch stay on the stock potentiometers unless you buy a separate kit for those. For the full argument on why load-cell force sensing beats a potentiometer in the first place, see why a load-cell brake is worth the upgrade — that piece owns the why; this one is about fit.

Route 2: A Full Load-Cell Pedal Set

If you want a steel chassis and a real strain-gauge load cell, the stock Logitech pedal box isn't upgradeable to that — you replace the whole pedal set. Two realistic options show up most often for G29/G923 owners.

Thrustmaster's T-LCM is a 3-pedal, all-metal set built around a load-cell brake and magnetic (Hall-effect style) throttle and clutch sensors. On PC, Thrustmaster's own product pages and support documentation confirm the T-LCM connects over USB as a standalone peripheral and works alongside any wheel on the market, Logitech included — the pedals and wheel just register as two separate USB devices to Windows. On console, the T-LCM's RJ12 cable is validated by Thrustmaster only with its own wheelbases (T-GT II, T300, T128, T248, TS-XW, TX); Thrustmaster doesn't document RJ12 pairing with a Logitech G29 or G923 base on PS5 or Xbox. Check Thrustmaster's current compatibility page before buying if console play with your Logitech wheel matters to you — PC owners don't have that restriction.

Logitech's own load-cell pedals are the G RS Pedals and the G PRO Racing Pedals. Per logitechg.com, the RS Pedals use a load-cell brake rated to roughly 75 kg (165 lb) paired with a Hall-effect throttle, and the PRO Racing Pedals step up to a 100 kg (220 lb) load cell with swappable springs and elastomers on the brake for tuning feel. Both are built natively for Logitech's current G Pro/R550 wheelbase family — they don't plug straight into a G29 or G923's pedal port. Logitech's fix is the Racing Adapter, a separate accessory that Logitech states lets RS or PRO pedals (and PRO wheel hardware) pair with G29, G920, and G923 wheels on PC, PlayStation 5, and Xbox Series X|S. Buying RS or PRO pedals for a G29/G923 rig means budgeting for the adapter as a second purchase — it is not bundled.

Check current price on the Thrustmaster T-LCM, or see current listings for Logitech's load-cell pedal options, before you commit either direction.

Compatibility at a Glance

Treat the T-LCM console column as the sticking point: it's a genuine load-cell upgrade for PC racers on any wheel, but a G29/G923 owner who races on PS5 or Xbox and wants console use should lean Logitech-plus-adapter instead, or confirm current pairing support directly on Thrustmaster's compatibility page before ordering.

Which Route Actually Fits Your Rig

If your budget is tight and you mostly want the brake to stop feeling like a light switch, a mod kit on the stock pedal box is the cheaper, faster fix — a weekend project with hand tools, no new wiring to learn, and it keeps your current footprint on the rig. It won't fix a flexing plastic base, and it only touches the brake pedal.

If you're building toward a steel-chassis pedal set and don't mind a second purchase for the mounting/connection piece, the full upgrade path is the one that actually replaces the chassis. PC-only racers have the simplest path with the T-LCM: plug it in over USB, done. Console racers who want to keep their G29 or G923 wheel should budget for Logitech's Racing Adapter alongside RS or PRO pedals rather than assume the T-LCM will pair over RJ12. Either way, our full pedal shortlist lays out current picks across price tiers — see our full shortlist before you buy. For the base-vs-base question some readers also ask, G29 vs. G923 compatibility covers what actually changed between those two wheels. If you're earlier in the build than pedals, our beginner's guide to a first sim-racing wheel setup is the better starting point.

How to Check Fit Before You Buy

• Confirm your platform first. PC-only racers have the widest options; console racers (especially PS5/Xbox) should verify RJ12 or adapter support on the maker's own compatibility page before ordering anything.
• Decide whether you're keeping the stock chassis. A mod kit only makes sense if the plastic pedal base and the stock throttle/clutch sensors are good enough for you long-term.
• Price the adapter in, not just the pedals, if you're going Logitech RS or PRO on a G29/G923 — the Racing Adapter is a separate line item.
• Read the maker's own current compatibility list before buying either the T-LCM or Logitech's pedals; wheelbase support lists get updated and this page can't catch every revision.

FAQ

What load cell fits my G29/G923 pedals directly, without buying a new pedal set? Nothing bolts a true strain-gauge load cell straight into the stock G29/G923 brake without opening the pedal housing. A brake mod kit (such as 3DRap's elastomer Brake Pedal MOD) changes the internal spring feel to give a pressure-based feel while keeping the stock chassis and sensor; a full load-cell pedal set (Thrustmaster T-LCM, or Logitech RS/PRO with the Racing Adapter) replaces the pedal box entirely.

Is there a sim-racing pedal brand called "Speedline" with a load cell? We could not verify a sim-racing pedal or load-cell product under the name "Speedline" on any manufacturer or retailer page as of this check. Speedline is a known name in automotive alloy wheels, which may be where the term is getting crossed over from. If you're trying to match a specific pedal you've seen called that, the two routes above — a mod kit on your stock pedals or a full pedal-set upgrade — cover the realistic options regardless of the name.

Can I just plug Thrustmaster or other third-party pedals into my Logitech G29/G923 wheel? Not through the wheel's own pedal port — that port is built for Logitech's pedal lineup and the Racing Adapter, not third-party sensors. On PC, a Thrustmaster T-LCM (or most USB pedal sets) will work alongside a G29/G923 because the pedals and wheel register as two separate USB devices to the game, bypassing the wheel's pedal port entirely. On console, that workaround isn't available — console games generally expect pedals and wheel from a matched, validated pairing.

Does the Logitech G PRO Racing Pedals' load cell work with a G29 or G923 out of the box? No — per Logitech's own product pages, PRO Racing Pedals (and RS Pedals) are built natively for the G Pro/R550 wheelbase. To use either with a G29, G920, or G923, Logitech's documented path is its separate Racing Adapter accessory, which it states supports PC, PS5, and Xbox Series X|S pairings.