2008 wr 450 grey wire

Can anyone tel me what the grey wire does on my wr 450, and if i cut the wire what happens ? also can it cause any damage to the engine.

got the pro moto billet end for the exhaust and it has sorted the flat spot and seems to have freed up the engine to rev better. I would recommend it as a good replacement .Plus it is louder and makes the bike sound like a bike not a lawn mower.


it supposed to give you YZ timing.

i have done it up here in canada... it didn't hurt the bike.. nor did it do anything... but i read somewhere it did not pretain to the WR series up in Canada.



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