Build your KESS3
Build your KESS3
Tick every group of vehicles you tune — cars, trucks and tractors, bikes, boats — then how you connect and who tunes the files. You see what goes in the basket and what it all costs; change any answer and it changes with it.
Your answers Car & LCV · OBD + bench & boot · master
KESS3 Master kit — Car & LCV OBD, Bench & Boot
£4,416
- KESS3 hardware with cables and case
- Car & LCV OBD, Bench & Boot protocols (master)
- 12 months Alientech subscription
- Registered to you as a master tool
+ Free TunerPRO portal set up with this master. What you get
What you are paying for
A KESS3 is three things, priced as one kit.
The tool
The KESS3 hardware with its cables. On its own it reads nothing: it is the same box for slave and master, for a car or a tractor.
Protocols
A licence per vehicle group (cars and LCVs, bikes, agri and trucks, marine) and per connection (OBD, bench and boot). Slave or master is decided here.
Subscription
The period of Alientech updates and new vehicles that comes with the protocols, renewable when it ends.
Before you order
Good to know
What do OBD, bench and boot mean?
OBD reads and writes through the diagnostic socket with the ECU still in the vehicle. Bench connects to the ECU out of the vehicle, through its connector. Boot opens the ECU and connects to the board, for units that cannot be read any other way. KESS3 does all three in one tool, for the protocols that are active on it.
Which vehicles does KESS3 cover?
Protocols are sold by vehicle group: cars and LCVs; bikes, ATVs and UTVs; agriculture, trucks and buses; marine and PWC. Coverage is decided ECU by ECU, so check Alientech’s official vehicle list, or send us the ECU reference on WhatsApp and we will tell you before you buy.
Is there a subscription?
Each protocol licence comes with a subscription period that brings Alientech’s updates and new vehicles; renewals are sold separately. Every kit on this site lists exactly what is in it.
Can I upgrade from slave to master later?
Yes. Alientech sells slave-to-master upgrades for each protocol group, so the tool you start with is the tool you keep. Ask MMT when you are ready.
KESS3 Master business pack
Start your tuning business, not just a tool.
Your own TunerPRO portal, set up free with every KESS3 master. Customers and dealers send you files, pay by card and download their tunes, under your name.
- Your brand, your address
- Files that arrive complete
- Paid before you start
- 22,000+ engines, 1,600+ ECUs
MMT Performance · Nottingham
Want a kit that is not in the list? Ask MMT.
Closed · opens 7am tomorrow. Send us the vehicle or the ECU reference and we will tell you what reads it and what it costs.