The sun gear shaft made famous by MSR (also known as the forward shaft) for the 6R80 is used to drive 1st through 4th gear and transmits power from the A clutch to the rear sun gear of the output planetary. As such it is called up to deliver all the power that your car will see in a drag racing scenario from the patch to the traps and it cops EVERY hit on EVERY shift! The OEM Ford part has an inherent weakness where it necks down below the output spline and has historically sheared at this point, resulting in the sudden reversal of power flow to the output planetary and destroying your OWC (one way clutch), killing the whole back half of your transmission.
Appliaction
Ford 6R80 Trans in 2011-2017 Mustang and F150
Bluestreak Performance’s new billet 300M shaft resolves this issue with the following features:
• 300M billet shaft material
• Uniform wall strength throughout, NO pencil necks here!
• CNC cut and indexed spline (not gang rolled) for perfect spline concentricity
• Through hardened, double tempered and shot-peened
• Precision cylindrical grinding post final surface treatment
• Supplied with premium bronze bushes.
• Direct Fit, no mods required
Parts are shipped with aerospace rust veto and are to be thoroughly cleaned and ensure all lubrication holes have been blown out
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
