Red Bull drivers Daniel Ricciardo and Daniil Kvyat are likely to start from the back of the grid at this weekend's Italian Grand Prix after sustaining a combined 40 place penalty.
With the characteristics of the Monza circuit unlikely to suit Red Bull's package, the team has opted to change several engine parts and sustain a heavy sanction.
Ricciardo has a nominal 25 place drop, 10 of which come from using a sixth Internal Combustion Engine [ICE], the first time he has had a sixth element installed.
Further five place penalties follow for a fifth Turbocharger [TC], fifth Motor Generator Unit-Heat [MGU-H] and fifth Motor Generator Unit-Kinetic [MGU-K].
Kvyat has a 15 place sanction as he too is using a sixth ICE and a fifth TC.
The Red Bull pair are among a quintet facing drops, with Fernando Alonso and Carlos Sainz Jr (10 places each) joining Jenson Button (5 places) in sustaining engine sanctions.
Red Bull may elect to change further parts in the power unit, which would lead to further positional drops but have little impact on starting places.