Wait a minute. Wasn't the parking brake caliper mounted behind the axle centerline last time around? Shouldn't we be staring at a big red four-piston Brembo caliper from here?
That was then; this is now. For 2013 the toe link has been moved from its former location behind the axle centerline to a position in front.
There it is again. And it looks as if it has two means of adjustment: a turnbuckle and an eccentric cam. What's that all about?
Look carefully at the fences on either side of the eccentric cam to see the answer. These run horizontally, which paradoxically means this is an up-down adjustment point for bump steer, not an in-out one for toe-in. The traditional toe-in adjustment is made with the turnbuckle built into the link itself.
Adjustable rear bump steer is new for the 2013 Viper, and it's a nod to track users who want to optimize the handling of their car from track to track. But that's not the main reason for the switch from a rear-mounted toe link to this forward mount. SRT engineers tell me it was done to better optimize rear roll steer and compliance steer in general, to make this beast a bit less beastly.
The relocation of this link is what caused the brake calipers to trade places, and in so doing the aluminum rear knuckle had to be totally redesigned.
