Making rugged rear end components has been Moser Engineering‘s claim to fame since 1982, as they’ve established themselves as one of the go-to sources for affordable American-made axles and driveline components.  Like any good manufacturing company, Moser and its products have advanced alongside the ever-evolving demands of the most hardcore of racers, and the introduction of their new Pro Flange Axle is the culmination of the hours that their engineers have dedicated to designing the lightest and strongest flanged axle possible.

The newest flanged axle to surface from Moser is the first redesign of a lightened flange in about 20 years, as Moser went back to the drawing board to rework these extreme duty axles. This newest model has gone through a considerable number of revisions during its test phases. During this rigorous testing, the engineers discovered that their current floater hub design was the ideal setup for a lightened flanged axle, and as such, the new lightweight Pro Flange is almost exclusively based off their current full floater style assembly.

“We started with the floater-style design to get a good baseline reading, and with a few minor tweaks, the core shape of Pro Flange design arose,” said Jeff Anderson of Moser Engineering “At the end of testing, our engineering department was pleasantly surprised by the strength and lightweight benefits of this updated flange.”

The whole purpose of this redesign is to minimize rotational mass and retain rigidity in the most demanding of conditions. It’s well known that less reciprocating mass results in less power loss throughout the drivetrain. This new setup is the optimal balance of a lightweight design and race proven strength. While lightening the axle has been the center of attention over past years, with gun-drilling becoming a major contributor to weight reduction, the axle flange has not received much attention until now. Quicker and faster 1/8- and 1/4-mile passes have pushed the entire drag racing community to redesign a massive amount of products to remain ahead of the curve.

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The install was pretty straight forward on these axles. The axles feature a shaft size of 1.705-inches with oversized 1.774-inches bearing seats that make this upgrade a breeze on this application.

“As power levels have increased, we’ve begun to see issues, especially during times of extreme tire shake, that the potential of axle failure is increased,” Anderson explains. “The limitations of the previous designs have come to light as power levels have increased. We’ve seen some failures — not necessarily with our product — that made us go back to the drawing board to address any potential weakness of the current lightened flange design.”

The Extreme Pro Flange axle was constructed to aid the racer who’s looking to pull every possible pound of weight out of their land-locked missiles. The additional advantage of weight reduction could very well be the difference between winning and losing any race … after all, we’ve all come across a moment in time where we need just a bit more to edge out the guy in the other lane.

While these axles do not carry a power limit or torque rating, as the effectiveness of this design is based upon a number of different factors; with some being vehicle weight, rear end gearing, and tire design. As such, Moser recommends that you discuss this conversion with one of their technical representatives to ensure you get the right axle setup for your application. Be sure to check out Moser Engineering to outfit your 1/4-mile ground pounder with the latest and greatest rear end components.