This kit is a newly revised version of the original rear mount turbo system that was the most popular RX1 turbo kit ever sold. We have been able to make all the necessary upgrades that were needed to that original design to maximize the full potential of the turbo kit.

The hundreds of thousands of miles now accumulated on the trails and lakes since the 2002 riding season, on the literally hundreds of these kits sold, are true testaments to the trail-ability and reliability of the tried and true design. We have customers putting over 3000+ miles a year on this true gas-and-go kit without as much as even replacing a belt. Some approaching 20K+ miles on their rear mounted turbo RX1s!

This is NOT recommended for the novice snowmobiler due to the sheer acceleration and vision blurring speed that can be achieved.

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  • PRESET 5 psi (35 kPa) / 190 HP BOOST LEVEL for safeguarded reliability of the stock engine at low elevation with premium pump gas on the trail.
    No internal engine disassembly or modifications are required.
  • 7 psi (48 kPa) 210 HP is the maximum recommended boost level of this kit with the stock engine / compression ratio on premium pump gas. Higher boost levels will require the use of a correspondingly higher octane rated fuel.

    Note: When our optional lower compression turbo pistons are installed, this kit becomes adjustable to 240 HP (12 psi / 83 kPa) on premium pump gas without sacrificing low end throttle response like our competition. Also becomes capable of 16 psi (110 kPa) 255 HP peak.

    We DO NOT recommend use of a head shim, or stacked head gaskets, to lower compression ratios in order to allow operating at higher boost / HP levels with lower octane fuel. In our experience, this compromises the desired trail sled characteristics, such as throttle response, fuel economy, and the overall engine efficiency that was extensively developed by the OEM. Therefore, we feel that the best way to accomplish lowering the compression ratio is to do it right the first time and install properly designed turbo pistons.

  • GENUINE GARRETT GT2554 SERIES BALL BEARING TURBOCHARGER that was methodically selected during R&D for an optimal size providing efficiency with nearly instant boost response. Internally waste gated for a tight clean fitment and simplicity. Optional STAGES available with various turbocharger models and components for any craved HP and boost level. Call us to discuss your needs.
  • BOLT-ON REAR MOUNT DESIGN. With the combination of select components, proper design, and tuning we use, the myth of a rear mount turbo having too much “lag” is dispelled. By intentionally mounting the hot turbo and components in the stock muffler location at the rear, we accomplish a few things…

    First: All the hot components remain where Yamaha intended them to go and underneath properly designed heat shields. Unlike our competition, this eliminates additional heat under the hood and, most importantly, tremendous heat next to the plastic gas tank that causes unstable fuel temperatures and inconsistent performance on the trail or lake.

    Second: The stock gas tank is maintained without cutting or modifications, keeping the OEM capacity for longer ranges between fuel stops.

    Third: We maintain the use of the efficiently flowing and light weight factory 4-2-1 exhaust headers, which were extensively developed and designed by Yamaha to work in unison with their selected cam timing and overall air flow characteristics of this Genesis engine to produce the smooth power band and performance dynamics that it’s notorious for. Also accommodates the thermal expansion of the whole exhaust system to prevent cracking and breaking under use, of which most front mount header designs are plagued with.

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  • DUAL INTERCOOLED TECHNOLOGY. Our unique rear mounted turbo kit design utilizes two sources to effectively cool the boost charge air, which together removes even more heat from the charge air entering the engine. To start with we use an aluminum finned boost charge tube mounted in the best placepossible to extract as much heat as possible, in the tunnel… We call this SSI (Single Snow Intercooler). This FPP snow intercooler, by using snow & water to aluminum, has a thermal transfer coefficient that is 14 X more effective than just air to aluminum alone. We’ve proven that using snow & water spray from the track is the most effective way to gain the best charge cooling possible on this machine. To compliment the SSI in the tunnel we finished with a properly sized conventional air-to-air intercooler integrated into the air box at the carburetors to further dissipate any remaining heat that might still be left over in the intake charge. In our testing on the trail, this proven combination results in charge air temperature entering the carburetors that’s within a few degrees of the ambient outside air. This is one of the largest contributors to providing increased reliability with a higher horsepower output at lower boost levels than the competition using only a single front mounted conventional air to air intercooler under the hood with little airflow. We also use a set of turn buckles to secure the air box to the frame cross member as added insurance from blowing off the carburetors under any big boost levels.
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  • MODULAR FUEL SYSTEM with an electric fuel pump with pre-wired dedicated power relay and a rising rate FPR (fuel pressure regulator) to provide stable carburetor float bowl fuel pressure as boost pressure rises. Capacity for over 400 HP. Utilizes a Pitot Tube design that meters boost pressure to the carburetor float bowl vents to control air fuel ratios while maintaining the use of the stock needles and jets. Provides easy access for quick AFR tuning for all altitudes, temperatures, and boost levels without carburetor removal or disassembly.
  • BILLET ALUMINUM BLOW OFF VALVE that is properly sized for efficiency and strategically located closest to the carburetors to provide an improved ON-OFF then BACK-ON AGAIN throttle response. Optional upgrade to dual BOV providing more flow for higher HP and boost level capabilities.
  • ELECTRONIC OIL SCAVENGE PUMP mounted in the nose to positively return oil from the turbocharger back to the oil tank, ensuring that no oil is lost through the turbo seals, and into the charge tube or exhaust housing causing smoking, due to oil return backup. Long life, continuous duty rated model with a separate dedicated power relay. Comes pre-wired in loom for the FPP kit with all the required mounting brackets and hardware.
  • SINGLE OUTLET HIGH FLOW STAINLESS MUFFLER with matching cosmetic blank for the opposite side cone for the appearance of the factory dual. Optional Dual Outlet Stainless High Flow Trail Muffler available for lower dB sound levels while maintaining performance.
  • HIGH QUALITY STAINLESS STEEL AND ALUMINUM is used to provide a long trouble free life. All fabrication and assembly is performed in-house.
  • Complete easy to follow installation instructions and templates. Utilizes almost all factory holes and mounting locations to produce a very stealthy and clean OEM fit and finish.

We also recommend the following optional items to reach the sleds full potential.

  • GLOWSHIFT ANALOG BOOST GAUGE. Comes pre-wired in loom for the FPP kit with a mounting pod and all required hardware. This allows the customer to verify the kit is operating safely within the design intended boost level after installation. $99.00
  • AEM DIGITAL BOOST GAUGE. Comes pre-wired in loom for the FPP kit, includes a mounting pod and all required hardware. $199.00
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  • AEM DIGITAL AIR/FUEL RATIO GAUGE. Comes pre-wired in loom for the FPP kit, includes a mounting pod and all required hardware. $249.00
  • TRAIL CLUTCH KIT. Includes pre-assembled Heel-Clicker weights, primary spring, secondary spring and overdrive washers. Re-uses stock helix. $299.00
  • LARGER TOP SPROCKET AND CHAIN to harness the HP gain and increase top end speed. $205.00
  • LOW COMPRESSION TURBO PISTONS to allow higher boost levels with lower octane rated fuels.
  • FPP’S DUAL OUTLET STAINLESS HIGH FLOW TRAIL MUFFLER built specifically for our rear mount design locating across the back under the stock heat shroud and exiting both stock cone outlet locations for a stealthy OEM look. This is a true low restriction performance muffler with a sweet throaty spine tingling tone from the high RPM Genesis engine, producing only a slightly louder then stock dB sound level meaning it’s hidden and won’t attract attention nor numb your ear drums. Comes with a pre-installed O2 sensor boss and plug-off. $399.00 upgrade discounted price, or $499.00 if purchased separately.
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  • STAGE 2 DUAL BILLET BOV (Blow-Off Valve) UPGRADE providing more flow for higher HP and boost level capabilities. $150.00