SKU: 68946940686

LITHIUM-ION CHARGING SYSTEM CONVERSION (RMS900-106857)

Sale price$603.00 Regular price$670.00
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

LITHIUM-ION CHARGING SYSTEM CONVERSION (RMS900-106857)Stator + Flywheel + Regulator (Lithium Ion) + Gasket + Connectors Kit Crankcase cover gasket included Connector kit included All products are tested Brand new aftermarket stator Direct replacement to your original unit Plug and play, direct fit, easy installation Highest grade of lamination materials Highest grade of copper winding, resistant to 200 degrees Celsius Connector included Rubber grommet included Introducing our newest Heavy Duty Flywheel

Stator + Flywheel + Regulator (Lithium-Ion) + Gasket + Connectors Kit

  • Crankcase cover gasket included
  • Connector kit included
  • All products are tested

Brand new aftermarket stator

  • Direct replacement to your original unit
  • Plug-and-play, direct fit, easy installation
  • Highest grade of lamination materials
  • Highest grade of copper winding, resistant to 200 degrees Celsius
  • Connector included
  • Rubber grommet included

Introducing our newest Heavy Duty Flywheel Rotor For Yamaha Motorcycles

Anyone who rides or repairs a Yamaha YZF R1, FZ1 or FZ8 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.

A Heavy Duty Flywheel to the rescue!

New RMSTATOR heavy-duty flywheel rotor for Yamaha Motorcycles 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.

  • 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 heat and friction 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 years 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 the 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 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 our new heavy-duty flywheel.

Why use Mosfet Enhanced technology?

  • Runs cooler - Runs much cooler than the traditional Shunt voltage regulator rectifier.
  • Saves gas - Less load on the stator, less work, less fuel is used and you save.
  • Regulated energy - The power charging your battery is steadier and smooth.
  • Extended battery life - Extends the battery’s life and cold cranking capacity.
  • More engine power - Removes stator load resulting in more engine power.
  • Optimized power - Optimize power delivery by switching the stator coils on or off.

With Enhance Technology design

This product is an advanced design that lowers operating temperatures for extended longevity and better performance than the OEM part.

Brand new Mosfet voltage regulator rectifier

WORKS WITH LITHIUM BATTERIES ONLY

Stop burning your voltage regulator rectifier!

It is time to update or replace your voltage regulator with the advanced MOSFET type.

It runs cooler than all SCR diode-style OEM regulators. In addition, this rectifier has overheat protection, rather than burn up it will simply turn off for a while and cool off.

  • Direct replacement to your original unit
  • Plug-and-play, direct fit, easy installation
  • The quality exceeds the OEM part
  • Higher grade of electric components

Opposite connector (main harness side) included as we know these are often melted/corroded/defective and a major cause for repetitive electrical issues.

Why do you need a different voltage regulator for lithium batteries?

Lithium batteries have different charging requirements than Lead Acid or AGM batteries that can severely affect their lifespan and performance. The key factors in safe and reliable lithium battery charging are the output DC voltage ripple and average output voltage. The RMSTATOR regulator is designed around the optimal parameters for these factors.

The ripple effect is all that matters

Charging voltage ripple in a Powersports application is the difference between the highest and lowest voltages from the voltage regulator output. By nature, a common shunt style voltage regulator will have a fairly high voltage ripple due to the regulation shunt switches opening and closing frequently. Each on/off transition will cause some variation in the output voltage, this is unavoidable. Keeping this to a minimum is critical for Lithium batteries, and the RMSTATOR Lithium regulator is designed around this feature.

In a perfect world, a ripple of less than 10% of the output voltage (~1.5V for a typical regulator), would be ideal, however, is not practical for this type of regulator. The RMSTATOR Lithium regulator is able to maintain a less than 4 Volts output ripple, compared to verified test results of our competitors 8 volts. Keep in mind this ripple voltage is only seen via an Oscilloscope sampling the voltage 1000’s of times a second, and is not the same as your average charging voltage as measured by a multimeter.

PLEASE NOTE: This voltage regulator is ONLY for lithium batteries THIS IS NOT FOR LEAD ACID BATTERIES. Output Voltage is the key factor in a voltage regulator designed specifically for Lithium batteries. The ideal charging voltage for Lithium batteries is 13.9-14.2VDC. The RMSTATOR regulator has a carefully set output voltage of 14.1VDC (+/- 0.1VDC). This stable and ideal output voltage carefully keeps a lithium battery in its ideal charging range.

Please Note:

  1. All electrical components must be fitted by a qualified technician.
  2. Before fitting electrical components ensure the root cause of the original failure has been addressed.
  3. The absence of either of points 1 or 2 above, will void any warranty.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68946940686

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Lynn
Belleville, US
★★★★★ 4
Excellant value
Special Size: Wide Leg Crop, Size: 14, Color: Rinse, Special Size: Wide Leg Crop, Size: 14, Color: Rinse
Purchased the “cropped” length. I am 5ft 3.5 inch. Weight 170lbs (42 inch hip/38 inch waist) normally wear a size 10/12 or 31 in jeans, depending on the brand. I ordered up at 14 for these based on other reviewers. (When held up to other jeans they were the same as a Talbots 10 at the waist) Prewash they felt good, a little big& length hit at the top of my foot. After wash and dry, the fit was almost perfect and the length was at lower ankle. Ordering up is probably the right choice, although I think I could have been comfortable in a 12 (with no drying). They are a tad bit too long for a “cropped” look IMO. The wide leg is a true wide leg and falls straight from the waist. The material is heavy and there is almost no give/stretch - so a traditional denim. This is the dark blue and it is a true dark blue. You can’t beat the price, excellent value.
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Reviewed in the United States on March 31, 2026
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Mrs. Propes
Louisville, US
★★★★★ 3
Cropped ones are better, size issue with full length pants
Special Size: Wide Leg, Size: 18, Color: Authentic Medium Wash
These are very small in the waist and about 8 inches too long (and I'm not even that short). Very well constructed though so I'll keep them on hand as I'm on a weight loss journey. These were an 18 and fit more like a larger 14. The cropped ones are AWESOME. I ordered a second pair in a different color. They fit absolutely perfectly and hit me around the ankle length wise. Adore them.
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Reviewed in the United States on September 28, 2025
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ITSJUSTME
Bozeman, US
★★★★★ 5
GET THESE JEANS!!
Special Size: Wide Leg Crop, Size: 12, Color: Iced Blue Light Wash, Special Size: Wide Leg Crop, Size: 12, Color: Iced Blue Light Wash
I ordered these jeans because they were recommended by a youtube influencer and I have 0 regrets! They are a fairly heavy denim with just the right amount of stretch to them. I'd consider them to be mid to high waisted since the closure is right below my belly button. However, if I hike them up a bit they sit right above the belly button. I washed and dried them with little to no shrinkage. Length-wise they're slightly cropped on me, and fall right above the ankle. These jeans are honestly SO versatile because they look great with ballet flats, heels, tennis shoes, AND suede or leather ankle boots! Since I couldn't decide, I ordered them in two colors (iced blue light wash & medium blue vintage), and I love them both!! For reference, I'm 5'6 and 170 lbs. I ordered size 12 and they fit great. Highly recommend. You CANNOT beat the price for this level of quality in my opinion!!
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Reviewed in the United States on October 4, 2025
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Jaime
Pawtucket, US
★★★★★ 5
My everyday Jean
Special Size: Wide Leg Crop, Size: 8, Color: Medium Blue Vintage
They don’t have much of a stretch to them but they do get a bit more lose around the waist when you wearing often. Got a size 8 was tight but after a few uses they got perfect. Be Definitely is a thick jean material tucks in any unwanted over hang. Don’t tumble dry they do shrink
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Reviewed in the United States on May 16, 2026
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Kindle Customer
Cuba, US
★★★★★ 4
Good Jean for the price waist hips run small
Special Size: Wide Leg, Size: 18, Color: Black
These pants are good for the price. I needed a pair of wide leg black jeans and the price on these was good. Reviews said the waist was small. I’m a 16/18. Got an 18. And the high waist (up to my belly button) fits snug but has a little give. Still comfortable to wear. The butt thigh area fits snugger than most wide leg pants but again not so tight or uncomfortable to not wear. The fabric is a brushed Jean fabric not just a woven cotton Jean so dog hair sticks to it like glue. They are a heavy quality fabric so not a summer pant. They are a keeper for me. If a gain a few pounds I can these being a no go.
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Reviewed in the United States on February 27, 2026

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