Improved Capped Magneto FF97 Flywheel for Polaris Sportsman Scrambler Magnum 500 1997-2004 | 3086983 / 3087166 / 3085558

Improved Capped Magneto FF97 Flywheel for Polaris Sportsman Scrambler Magnum 500 1997-2004 | 3086983 / 3087166 / 3085558

Name: Improved Capped Magneto FF97 Flywheel for Polaris Sportsman Scrambler Magnum 500 1997-2004 | 3086983 / 3087166 / 3085558
Brand: RMSTATOR
SKU: RM11512
Price: 196.89 USD
Availability: InStock

RMSTATOR

SKU: RM11512

In Stock

RMSTATOR

Improved Capped Magneto FF97 Flywheel for Polaris Sportsman Scrambler Magnum 500 1997-2004 | 3086983 / 3087166 / 3085558

$196.89

This product fits your

FITMENT WARNING:

This product does not fit your

This product is ride specific

Shop By Vehicle

We are aware our flywheel does not have timing marks on the outer diameter like the OEM part. We are in the process of adding these to our flywheel; they will be on all future production. Until our new production is available, if you need to adjust your timing, please line up our flywheel with your OEM, matching the woodruff keyway orientation. You can then add timing marks in the same location to our flywheel with a permanent marker or paint pen.

Please note: This part replaces many Polaris OEM part numbers. All of them have 'FF97' cast into the back of the flywheel. There are multiple codes cast INSIDE of the flywheel that are compatible.
The most common OEMs have the code '3955K01' on the inside of the flywheel. Other compatible codes are '4866K' and '5207K'. Any of these can be replaced with this part.

Improved Capped Magneto FF97 Flywheel for Polaris Sportsman Scrambler Magnum 500 1997-2004 | 3086983 / 3087166 / 3085558

$196.89

Details

Don't Repair. Replace like a pro!

New Heavy Duty Flywheel Rotor
Polaris ATV/UTV

Introducing our newest Heavy Duty Flywheel Rotor For Polaris ATV/UTV.

Anyone who rides or repairs the Polaris ATV/UTV is probably familiar with the flywheel problems common to these models. Most of these bikes 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 Polaris 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 ATV/UTV.

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 Polaris ATV/UTV 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
One 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.

Specifications

Dimensions:

Exterior Diameter: 141 mm
Interior Diameter: 117 mm
Interior Diameter Center Housing: 25 mm
Exterior Diameter Center Housing: 23 mm

Interchange Part Nº

3087166
3086983
3086819
3085558

Installation

Before attempting to start your Polaris, 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.

Vehicle Fitments

Vehicle Fitments

Let customers speak for us

from 2034 reviews

Have not installed yet, however one of the ignition coils has one set of lamination out further than the other.should I file to make them even. Also I ordered voltage regulator have not received, you said you had one left at some warehouse, please let me know!!

Scott keena

03/17/2026