STAGE 1 - 850 E-TEC - Precision EFI
STAGE 1 - 850 E-TEC - Precision EFI

STAGE 1 - 850 E-TEC


Regular price €344,95
Tax included.
After several months of development followed by tests on dyno and in real conditions, here is the Precision EFI 850 E-TEC Stage 1 available for 2018,19 and 20. 
One of the most important improvements of the new reflash is the optimization of combustion, which eliminates the loss of power when the tune pipe is hot. A drag race  between a barely warm 850 E-TEC and a hot one running for more than 30 minutes, clearly shows a good difference.
Thanks to the new Precision EFI  850 E-TEC Stage 1, the sensation of weak acceleration is gone, giving way to a more stable and efficient power curve with a significant gain of 6 hp, without changing or adding any parts.

choose between two options

go to a Dealer

Get your ECU Flash by a simple plug into the diagnostic of your powersport vehicle by one of our certified dealers

See Dealer locator


You can send us your ECU.
You only need to fill out this form.

Fill ecu send-in form

you hesitate ?

Did you know that whenever you want you can improve your stage !
You just have to pay the difference between both stages !
This gives you the flexibility to start with the first stage option and upgrade to a more powerful stage without having to pay the full price again.

Did you know you can also add a warranty to your modified vehicle ? 

click here

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