This is what you need to upgrade your 2005-2008 SRT8's Axles to the stronger Challenger Axles.

What's included:

• 4779572AA-PAIR 2009 Challenger Rear Axle Hub,Pair
• 5180491AB 2009 RT Challenger LH Rear Axle Half Shaft
•  5180490AB (new part number supercedes to 5180490AC) 2009 RT Challenger RH Rear Axle Half Shaft