SPL Front Control Arms TSB

[Smilieboy]

I glanced around and didn't see it posted here so I figured I'd post it just in case. SPL released a TSB for their front control arms which includes ones for the S550.

Link: https://www.splparts.com/tsb-2301/

TO: Customers/drivers, builders/repair shops, and race teams

RE: Immediate and recurring inspection; torque setting & replacement of damaged cap bolts in aftermarket SPL front lower control arms: FLCA SKU’s: FLCA F8X, FLCAR F8X, FLCA E9X, FLCAR E9X, FLCA F3X, FLCAR F3X, FLCA G29, FLCA G8X, FLCA G8X IX, FLCA GT350, FLCA ATS, FLCA CAM6, FLCA S550

Effective Date: JULY 16TH, 2023 with cap bolt inspection, torque confirmation of 180/ft. Lbs or replacement before further use.

Description of Issue: SPL has received inquiries regarding bending and failures of cap bolts used in SPL front lower control arms. Information supplied to SPL indicates inadequate or un-retained torque of retaining nut/bolt to lower control arm may be contributing to bending and fatigue of grade-8 fasteners.

Recommended Action: Visually inspect cap bolt and control arm attachment points for bending, impact or other wear/distortion/damage; paying particular attention to the area where cap bolt threads exit retaining nut:

 

[ArizonaBOSS]

Good looking out!

 

[Hye Power]

So looks like the replaced all the bolts to the new design and over this past weekend we ran into s snag trying to install the front tension rods. Car is a 2018 gt with mcs coil overs and the new design the stud design is too tall and hits the bottom of the coil over. We called spl sent them pics and measurements and they sent us out the old bolt design. Seems like they tested it on gt350 but not gt so not sure if the front knuckle is that different to fit and one and not the other. So just an FYI something to think about or look at when purchasing.