How To Prevent Rear End Sag While Towing with a 2017 Infiniti QX70

Question:

Here are the requested measurements (in inches) A = 5 1/4" B = 5/8" C = 1 3/4" D = 1 1/2" E = 2 1/8" F = 1 7/8"

asked by: Frank B

Helpful Expert Reply:

Thank you for your purchase and I am glad that you liked the Curt Echo Mobile Trailer Brake Controller part # C51180 and Tuson Asymmetric Sway Control System part # 335TSC-1000 I recommended. As mentioned, the Coil SumoSprings Custom Helper Springs are the only option for your vehicle as they do not offer any other suspension enhancements. We do sell these and you can install them yourself because they are super easy but in order to provide you with a part number I need you to take the measurements in the attached photo. Once you can provide these I can then give you a part number to order.

expert reply by: Conner L

click to enlarge

Frank

4/29/2019

Here are the requested measurements (in inches) A = 5 1/4" B = 5/8" C = 1 3/4" D = 1 1/2" E = 2 1/8" F = 1 7/8"

Conner L.

4/29/2019

I spoke to SuperSpring and they informed me that based on the measurements that you provided, the Coil SumoSprings Custom Helper Springs part # CSS-1168 are what you need. Please disregard the "Not Confirmed to Fit" note.