LaRue Polaris Pro R Engine Build Kit
LaRue Polaris Pro R Pistons
Created out of frustration with what was available on the market, we engineered these pistons after seeing too many off-the-shelf options fail to meet our standards. Every dimension, every relief, every gram was dialed in with one goal: to survive the abuse that comes with serious power and everyday driving without giving up performance.
We don't just sell these; we run them and have tested and proven them. Every Pro R that rolls out of our shop, making 200 to 800+ wheel horsepower, is running this exact piston, including our 970 whp Pro R. If they couldn't take the beating, they wouldn't be in our machines.
And these aren't just for big-power builds. If you're running an everyday Pro R and you want real longevity and reliability, whether you're trail riding, dune running, desert pounding, or just daily driving the machine hard, these pistons deliver the same durability that holds up behind our highest horsepower builds. Our pistons are built for builders who refuse to compromise on either performance or reliability.
LaRue Polaris Pro R Rods with ARP 625+ Bolts
These rods were developed with one priority: to hold up to repeated full-power runs without becoming the weak link in the rotating assembly. Performance and reliability, no shortcuts.
These aren't theoretical; they're tested and proven. We run this exact rod in every Pro R build we put out at 200 to 800+ wheel horsepower, and they live behind the crankshaft of our 970 whp Pro R.
But you don't need to be chasing high horsepower numbers to benefit. If you're running an everyday Pro R and want the peace of mind that comes with a rod engineered to outlast everything else in the bottom end, whether you're trail riding, dune running, desert pounding, or just putting hard miles on the machine, these are the rods to run. If we trust them in our own machines, we trust them in yours.
These use ARP 625+ rod bolts and are included with our rods.
LaRue Polaris Pro R Head Gasket
The head gasket is the single most overlooked failure point on a high-horsepower Pro R, and after dealing with one too many blown gaskets on stock and aftermarket options, we set out to engineer a solution that wouldn't let us down. Designed by us, for us, with the kind of clamping and combustion sealing that big power builds actually require. Built for the everyday boosted Pro R for performance and reliability.
What sets our gasket apart is an additional ring around each cylinder that dramatically increases clamping pressure right where it matters most, sealing the combustion chamber against the kind of cylinder pressures that high-boost applications generate. It's a feature designed specifically to stop the lift-and-leak failure mode that takes out lesser gaskets when the boost climbs.
This is the head gasket sealing every Pro R we build from 200 to 800+ wheel horsepower, and it's what's holding the cylinders shut on our 970 whp Pro R. Tested and proven at power levels most platforms never see.
And it's not just for the big-boost crowd. If you're running an everyday Pro R and you want a gasket that's going to seal reliably for the long haul, trails, dunes, desert, or daily, this same gasket gives you that confidence in any style of riding. If it works for us, it'll work for you.
