i bought a rebult kit for 300$ CAN, from the dealership, it was in stock
i got a guy to rebuild it for 700$ with a years warenty
took him 1 day to rebuild it

im pretty sure its not hard but very time consuming

the dealer will not rebuild it, they will bullshyt u and tell u u need a whole new unit--->5600$~

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04 black on sapphire 4.8is personally put 90,000kms
fully loaded minus the fold out trunk floor
-20' DUB X10 3 piece rims staggered setup
-LED angel eyes + interior lights + e70 style shifter
-AFE stage 2 intake system
-x-pipe/resonator delete
-UV coat windshield
-rebuilt Pano roof
-dynavin N6
-all front and rear end suspension parts and both front cv shafts replaced
-OEM hitch

And 2007 GSXR750