I know it not but the color were the same and they had plan to use her maybe they already made the bike before the change and then put it in so they could had still used it

Yes. But remember a lot of the non-movie characters in the movie toyline have alt mode representations in the movie: Longarm's Tow Truck, The Osprey, The Black SUV, Arcee's Motorcycle, and The S7 Buggy.

The difference being that Arcee had been designed for the movie prior to production; the others are made-up robots based on random movie vehicles.

 

Allspark Power'D

Yup - we know this Pete :P

Or maybe there's more than one Fireblade in the world?

 

... Heck. If there's not then my Uncle owns Arcee.

Yup - we know this Pete :P

not everyone does

Yup - we know this Pete :P

not everyone does

I was just joking with you PeterHammer.

I know it not but the color were the same and they had plan to use her maybe they already made the bike before the change and then put it in so they could had still used it

To put it simply: The bike's nor Arcee officially, and beyond that, nobody really cares.

The movie is riddled with cameos of alt modes from past toy lines.

 

There's a few aircraft that are the same type as an Air Minicon from Classics

The aircraft that fire the first wave rounds at Scorponok are the "oldies" limbs from Energon Superion

The copter from the beginning with the Air Force guys is from Universe Obsidian

Mikela's Vespa is (close enough to) the motorbike Minicon from Armada Perceptor.

Mission City motorcycle is E. Arcee.

Sector 7 Gun/Jeeps are Cybertron Hardtop

... Faulty logic.

 

Scooters all look damn near the same, the A10 warthog is the premier Tank buster, Osprey's are used as Transport copters everywhere..

 

You really were reading far too much into that cameo list.