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SunCoast Diesel 68RFE UPGRADED L/R SPRAG - 68-LRS

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68-LRS
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Description

68RFE UPGRADED L/R SPRAG

Flipping out over the sprag:

The factory Low/Reverse sprag assembly has been a sore spot for many customers after a nasty boosted launch. It has left many of the 68RFE's stranded on the side of the road with a fat taste of disappointment in their mouth. The issue with this factory unit is inherent to the design. The factory unit utilizes a "dogbone" type sprag. The 68RFE Low/Reverse clutch is only on when the output shaft is turning below 150 rpm's. These Low/Reverse clutches then release the load back onto the factory Low/Reverse sprag, which during heavy acceleration, boosted launches, and burnouts will not stand up to such stress. The result will be the loss of first and second gear starts. The phrase "Copied but never caught", has been a phrase we have thrown around for years here, yet again we bring you another example. 

When SunCoast first saw this, we knew immediately this would not be acceptable for our torque-hungry clients, and so we went to work. SunCoast knew that the sprag had to be pre-loaded with tension and the old "dogbone" style was not going to work.  Hence, our very first design was to switch to an accordian style of spring. 
This proved to not only provided a sufficient amount of tension to keep the sprag from flipping, but held at the current power levels we were seeing at the time. As with anything we see, we knew it was only a matter of time before we would see the limits being pushed with our new design. Fast forward to 8 years later, and now this design has been copied and almost every retailer is selling their version of this design. The unfortunate aspect of this is that this design has reached its capacity with the power levels being reached in the new 6.7 Cummins, and we are seeing even the new design achieve catastrophic failure. However, we already were aware of this potential failure and have been hard at work with the patent office yet again. In all of our 68RFE units we now include our new Patent-Pending Billet M3GA sprag. This is an all-billet design, not the plastic stuff the competition wants to sell you. SunCoasts all-billet M3GA Sprag also includes a redesigned spring style to ensure the preload is sufficient to alleviate the problems. This new billet design is absolutely unbreakable and currently has a Patent Pending. Plastic or Billet? We will let you decide.

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