Improved Flywheel For Ski-Doo Expedition / Freestyle / Skandic / Summit / Tundra 550 / MX Z 380 / 2002-2020 | 420665370

KEY FEATURES
 

Brand New Magneto Flywheel Rotor

All item pictures are accurate

All products are tested

if in doubt do not hesitate to compare our item to your original part

DESCRIPTION

 

Don't Repair. Replace like a pro!

New Heavy Duty Flywheel Rotor
Ski-Doo + Lynx Snowmobile



Introducing our newest Heavy Duty Flywheel Rotor For Ski-Doo + Lynx Snowmobiles.

Anyone who rides or repairs Ski-Doo + Lynx Snowmobiles is probably familiar with the flywheel problems common to these models. Most of these machines will have at least one flywheel failure in their lifetime so far. Low quality epoxy was used on OEM flywheels to secure the magnets to the rotor body. Over time and many heat cycles, the epoxy fails allowing the magnets to come loose and contact the stator, potentially causing catastrophic damage.

For years, service shops & dealerships have offered low cost repairs for Ski-Doo + Lynx flywheels to save the 400$+ OEM replacement. This sounds like a great idea at first, but there are some serious issues!

The common repair is using JB Weld? Marine Blue Epoxy to reattach the loose original magnets, or to install new ones. Epoxy fixes do repair flywheels in short term, if they are done correctly. However, this kind of repair can easily cause immediate problems, and impact long term reliability of your Snowmobile.


Watch Evan, our head of engineering, explaining why you must not repair a flywheel.


A Heavy Duty Flywheel to the rescue!

New RMSTATOR heavy-duty flywheel rotor for Ski-Doo + Lynx Snowmobiles is a well-priced solution to problems with the OEM flywheel, and an excellent alternative to all the mechanical troubles you can encounter with a repair.

Features

  • Built to OEM size
    Fits precisely in your ride: install it and forget it.

  • Improved epoxy
    Uses high temperature epoxy that is stronger than OEM, eliminating the possibility of magnet detachment.

  • High grade steel capping
    Prevents harsh additives in motor oil from degrading the epoxy attaching the magnets. Though extremely unlikely, if a magnet did ever come loose, it would remain in the sleeve preventing contact with the stator.

  • Precise balancing
    Eliminates crankshaft vibrations for longer engine longevity.

  • Shop with confidence
    Two year warranty. All products are tested.

Don't waste time with temporary solutions, and start fixing your ride like a pro!


Why cheap repairs won't work?

Quick stronger epoxy fixes do repair flywheels in short term. It might however impair long term performance and reliability of your ride.

Remaining OEM magnets:
Original magnets remaining can still come loose at any time.

Magnet alignment:
The alignment of magnets around the flywheel is critical for proper stator operation. Even very fine misalignment will reduce stator efficiency significantly.

Magnet spacing:
Excessive epoxy or incorrect magnet spacing around the flywheel can easily affect the flywheel balance. This can cause stator contact or even crankshaft damages.

Incorrect replacement magnets:
The magnetic field strength of new magnets MUST match the originals. Stator failure can occur quickly with stronger magnets and stator output can be decreased significantly using weaker magnets.

Wrong epoxy properties:
Epoxy that is not rated to permanently handle high temperatures and oil immersion can quickly cause a serious failure.

Oil contamination:
Wrong epoxy for the application can also contaminate the crankcase oil, damaging the motor.

All these reasons make us strongly recommend that you replace your broken flywheel with a new 400+ OEM one or our new heavy duty flywheel.

Vehicle models fitment

 

Ski-doo Expedition 550 Electric Start Carb F/C -- 2005
Ski-doo Expedition 550 Sport Carb F/C -- 2007-2008, 2011-2020
Ski-doo Expedition 550 Sport Electric Start Carb F/C -- 2006, 2020
Ski-doo Freestyle 550 Crank Start Carb F/C -- 2007
Ski-doo Freestyle 550 Electric Start Carb F/C -- 2007-2009
Ski-doo Freestyle 550 Park Crank Start Carb F/C -- 2008
Ski-doo Freestyle 550 Park Electric Start Carb F/C -- 2007-2008
Ski-doo Freestyle 550 Session Manual Start Carb F/C -- 2007
Ski-doo Freestyle Backcountry 550F ES -- 2007-2009
Ski-doo Grand Touring 380 Carb F/C -- 2002-2003
Ski-doo Grand Touring 500 Carb F/C -- 2002
Ski-doo Grand Touring 550 Carb F/C -- 2003
Ski-doo Grand Touring Sport 550 Carb F/C -- 2010-2015
Ski-doo GSX 380 Carb F/C -- 2005-2006
Ski-doo GSX 550 Carb F/C -- 2005-2010
Ski-doo GTX 380 Carb F/C -- 2005-2006
Ski-doo GTX 550 Carb F/C -- 2005-2009
Ski-doo Legend 380 Carb F/C -- 2002-2004
Ski-doo Legend 500 Carb F/C -- 2002
Ski-doo Legend 550 Carb F/C -- 2003-2004
Ski-doo MX Z 380 Carb F/C -- 2002-2006
Ski-doo MX Z 500 Carb F/C -- 2002
Ski-doo MX Z 550 Carb Electric Start F/C -- 2008
Ski-doo MX Z 550 Carb F/C -- 2003-2007
Ski-doo MX Z 550 Carb Manual Start F/C -- 2008
Ski-doo MX Z 550 Sport Carb F/C -- 2011-2014
Ski-doo MX Z 550 TNT Carb F/C -- 2010-2012
Ski-doo MX ZX 550 Carb F/C -- 2006
Ski-doo MX ZX 550 Electric Start Carb F/C -- 2007-2009
Ski-doo Renegade 550 Sport Carb F/C -- 2010-2014
Ski-doo Skandic 500 Carb F/C -- 2003
Ski-doo Skandic 550 Carb F/C -- 2004
Ski-doo Skandic 550 SUV Carb F/C -- 2004-2010
Ski-doo Skandic 550 SWT Carb F/C -- 2004-2008, 2014-2019
Ski-doo Skandic 550 Tundra Carb F/C -- 2008, 2010
Ski-doo Skandic 550 Tundra LT Carb F/C -- 2008-2010
Ski-doo Skandic 550 Tundra Sport Carb F/C -- 2010
Ski-doo Skandic 550 WT Carb F/C -- 2004-2020
Ski-doo Summit 500 Carb F/C -- 2002
Ski-doo Summit 550 Carb F/C -- 2003-2009
Ski-doo Tundra 550 F LT -- 2011-2020
Ski-doo Tundra 550 F Sport -- 2011-2017, 2019-2020
Ski-doo Tundra 550 Std Carb F/C -- 2011-2012
Ski-doo Tundra 550 WT Carb F/C -- 2017-2019
Ski-doo Tundra 550 WT RER Carb F/C -- 2014-2015

OEM part replacement

 

420889375
420889370
420889376
107044-R00

Specifications

 

Dimensions:
Inner Diameter: 96 mm
Outer Diameter: 116 mm
Total Height: 50 mm
Inside Height: 36 mm
Center Housing Depth: 23.50 mm
Center Housing Widest: 27.50 mm
Center Housing Thickness: 24.50 mm

instructions

 

Before attempting to start your Ski-Doo adjusting the air gap is necessary. Rotate the flywheel so the raised node is lined up with the pick up/pulser coil and adjust as close as possible but no less than 0.010".

Warning:

Risk of electric shock. Disconnect the battery before servicing.
Ensure proper installation by a qualified technician to avoid malfunction.