Ask smarter. Race faster.
Drop in your MyChron or Alfano file. KartBrain shows where the time went, sets your LO206 jetting for today's air, and remembers every setup you've run.
No card. When the trial ends you stay on Free unless you pick a plan.
The main event
Load your logger file. KartBrain tells you what you're doing wrong, corner by corner, in plain steps you can read out to your driver, or to yourself. Quick. Easy. Simple enough to hand to a kid.
1 · Next steps
Every step names the corner, the speed to carry, and the one change to try. Read it to your driver in the paddock and they know what to do on the next lap.
2 · Where to find more speed
Corners ranked by the seconds you left behind compared with your own best pass, plus a gear check from the same file. Pick the first one and go.
3 · Corner map
Right is faster. Up is less consistent. Red is work on this, green is done. In five seconds you can tell your driver, or read for yourself, where to put the next practice.
What it does
One account covers the data workspace, the LO206 tools, and a setup book the coach can read. Every number comes from your file, your sheet, or the air at the track.
Data
LO206
Setup book
Data charts
The charts below are a separate example from the Buttonwillow session in the hero (best lap 59.398). They are the real Data workspace on KartBrain's built-in sample at KartBrain Sample Raceway, where lap 8 is the fastest at 43.984, drawn the same way as your own laps. Pick a category, then tap any chart to see it full screen.
Works with MyChron 5 & 6 and Alfano 6 & 7 on every plan.
KartBrain Sample Raceway, a separate session from the Buttonwillow figures (best lap 59.398). Fastest lap here is 43.984. These are the corners worth the most time, and the lap that already did them better.
Ranks the corners with the most free time and sets a next-lap target from the biggest three. Each one shows the speed trace from your own lap that did it better, and what to change.
Any two laps side by side. The time gap climbs exactly where one lap loses, and the biggest loss and gain are named by corner.
See whether a run is getting faster, and how much of the ideal lap you have already driven.
Every flying lap in order with a trend line, so tyre warm-up and fading pace show at a glance. This sample run gets 0.128 s a lap faster.
Every lap split into sectors, with the best of each lit up. Put the best sectors together and you see time you have already driven: 0.024 s here.
The raw channels, laid out so you can read them without Race Studio open.
Speed, RPM, and the time gap to your best lap on one distance axis with every corner marked. Hover anywhere to read all of them at that spot.
Your GPS line coloured by speed, with corners and sectors labelled, so every number on the other charts has a place on the track.
How well each corner is driven, and how much of the tyre you are really using.
Every corner scored out of 100 in one shape, so your strongest and weakest corners stand out before you read a single number.
Cornering against braking and acceleration for the whole lap. A fuller circle means more of the tyre is working; this lap peaks at 1.61 g.
Where the engine lives on the lap, and whether the gearing suits the track.
Shows the RPM band the engine uses across the lap, from 3,201 at the slowest corner to a 6,003 peak, and reads whether the gearing fits.
Power (Plus and Unlimited) estimates horsepower along your lap from a proprietary dyno curve, so a gearing or jetting change shows up where it matters.
AI training data
KartBrain's coach answers from a separate knowledge collection for each engine program: 20 programs, each with its own library, so a KA100 racer never gets LO206 notes. The IAME, LO206, Clone, and Animal training manuals are gigantic.
Pick yours in onboarding. The coach does the rest.
KartBrain Primary Knowledge
IAME KA100
IAME's 100cc reed-valve engine: carb tuning, gearing, and clutch notes.
IAME X30
IAME's 125cc TaG: jetting, gearing, and top-end rebuild know-how.
Leopard
The classic IAME 100cc TaG: carb setup, gearing, and keeping an older engine healthy.
Rotax Max
The Rotax Max family: jetting for the air, power valve, and service intervals.
Vortex ROK
Vortex ROK engines: carb setup, gearing, and class-by-class tuning.
Vortex VLR
Vortex's 100cc VLR, kept in its own collection so it never mixes with the ROK.
Yamaha KT100
The piston-port classic: pipe, carb, and gearing notes.
Shifter / KZ
Gearbox engines: gear selection, jetting, and power band for shifter racing.
Tillotson
Tillotson racing engines: build specs, carb, and gearing.
TM
TM two-strokes: jetting, ignition, and rebuild notes.
Kid Kart (Comer / Swift)
Comer and Swift kid kart engines: simple, safe setup for the youngest racers.
Animal / Raptor
Briggs Animal and Raptor builds: a huge builder manual on cams, springs, and carbs.
World Formula
Briggs World Formula: sealed-engine care, carb, and gearing.
Clone
Clone builds: a huge builder manual on tech-legal parts, carbs, and gearing.
Predator / Ghost 212
Predator and Ghost 212 builds, from stock to race-ready, part by part.
Ducar
Ducar four-strokes: build, carb, and gearing notes.
Flathead
Briggs Flathead builds. Its full training manual is published below.
Honda GX
Honda GX engines: build specs, carb, and gearing for GX classes.
450cc
450cc four-strokes: setup, gearing, and maintenance for the big-bore class.
For anyone who wants to see the real data we train our models on:
Read the Flathead training manual →Engine tools
Two tools for the questions racers argue about in the pits, each with the reason behind every number and a short list of where to find more speed.
LO206 Jetting
Tell it your slide and fuel once. It reads the weather at the track, works out the air density, and sets the main jet, needle clip, float height, and air-bleed. Every number comes with the reason behind it.
Slide colour, octane, ethanol, and your own calibration nudge. Saved, so next time it's one tap.
Temperature, humidity, and pressure from a ZIP code, or typed in from the station in your hand. Density altitude is worked out for you.
Fat, Stock, or Skinny 95, the clip position, float height, and air-bleed turns, with a confidence level and the reason for each.
Optimal GearNew
Optimal Gear is built from real dyno data from top engine builders. It runs your engine's curve through your sprockets, tire, race weight, and track, and picks the axle sprocket that keeps the engine in its power band.
Coach
Every tool ends with what to try next, and one tap hands it to the coach with your numbers attached. It asks one question first (qualifying or race pace, which track, which class), then gives you a list in the order worth trying.
How it works
Chassis, engine, class, series, and home track, in one pass. A driver under 13 signs up through a parent or guardian.
Import a MyChron (Race Studio) or Alfano file, or photograph a screen you already have: split times, a time/distance graph, or the spark plug.
Quick Read names the corner to fix first. Save the setup you try as a new sheet, so the next session shows whether it worked.
Proof
Buttonwillow Raceway, separate from the Sample Raceway charts above. The best corners from different laps add up to 58.916 against a 59.398 best lap, so 0.482 s is already in the driver's laps. Fixing T12, T5, and T7 targets 59.042.
These numbers are the Buttonwillow Quick Read and Gain Plan (best lap 59.398). The chart gallery is the separate KartBrain Sample Raceway sample (fastest lap 43.984).
Pricing
Every new account gets 7 days of Unlimited, no card. After that, stay on Free or pick the plan that fits how often you race. Setups, sessions, and tracks are unlimited on every plan. Prices in US dollars.
$0forever
No card needed.
Your setup book, session log, and tracks, with a taste of everything else.
Works with MyChron 5 & 6 and Alfano 6 & 7
Every new account starts with 7 days of Unlimited.
$2.79/month
Billed monthly.
For the racer who races some weekends.
Works with MyChron 5 & 6 and Alfano 6 & 7
Starts with 7 days of Unlimited free. No card. Cancel anytime.
$9.99/month
About $2.31 a week, billed monthly.
For the racer who opens KartBrain every session. Fair use applies.
Works with MyChron 5 & 6 and Alfano 6 & 7
Starts with 7 days of Unlimited free. No card. Cancel anytime.
Running a team or a rental fleet? White-label, with your own domain and apps, rental seats, and no KartBrain name, is quoted separately. Ask for a quote.
Look inside
No mock-ups. Tap any screenshot to see it full size.
FAQ
MyChron 5 & 6 and Alfano 6 & 7, on every plan including Free. MyChron files come from Race Studio 3 (XRK or CSV) and Alfano files from the Alfano software's CSV export. An XRK file is converted on your phone or computer before it uploads. No file handy? Photograph the Race Studio split-times or time/distance screen instead.
No. The setup book, session log, LO206 jetting helper, spark plug reader, and the coach all work without a logger. A logger file adds the Data workspace for your own laps.
Your setups, sessions, and files are only visible to you unless you share a link. Using your content to improve KartBrain stays off unless you turn it on.
Read the Privacy PolicyYes. The coach and the setup book cover two-stroke and four-stroke karts, and every engine in the training-data list has its own knowledge collection, from KA100 and X30 to Rotax, ROK, and KZ shifters. The jetting helper and dyno-based power are built for the LO206.
Plus comes with allowances: 4 logger files a month, 30 coach replies a day, and 10 photo reads a month. Unlimited removes them, under fair use. Both include Power and PDF reports, and neither shows ads.
Yes, anytime, from the billing page in your account. A paid plan runs to the end of the period you paid for, then the account moves to Free. Your setups, sessions, and tracks stay. The 7-day Unlimited trial needs no card and simply ends.
Lap times, corner deltas, and channel stats come from your file. The coach is not allowed to invent jetting, gearing, or a lap time. A number that is not in the file or in your question was not measured.
Each driver has their own account, and a weekend schedule can be shared with the whole group as a link. Teams that want their own domain and apps, rental seats, and no KartBrain name can get a white-label quote.
White-label is under pricingStart free with 7 days of Unlimited. No card, and your setups and sessions stay yours on every plan.
Start free — 7 days of Unlimited