SKU: 966657937

Stator + Kokusan Flywheel Kit Assorted Aprilia Models (RMS900-103848)

$423.00 $470.00
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For Your Every Summer RSVP, with Code: SUMMER15

Description

Stator + Kokusan Flywheel Kit Assorted Aprilia Models (RMS900-103848)Introducing our newest heavy duty recall type charging system upgrade kit for Aprilia 2009 2020 RSV4 & 2011 2020 Tuono V4. Anyone who rides or repairs Aprilias motorcycles is probably familiar with the stator, flywheel, and sometimes voltage regulator issues common to these models. Most of these bikes will have had at least one stator fail in their lifetime so far. The main problem was extremely strong magnets were used on the original flywheels,

Introducing our newest heavy-duty recall-type charging system upgrade kit for Aprilia 2009-2020 RSV4 & 2011-2020 Tuono V4.

Anyone who rides or repairs Aprilia’s motorcycles is probably familiar with the stator, flywheel, and sometimes voltage regulator issues common to these models. Most of these bikes will have had at least one stator fail in their lifetime so far. The main problem was extremely strong magnets were used on the original flywheels, creating a very high power stator output, which generated excessive heat. This usually resulted in burned-up, or shorted stator winding, and often in a failed voltage regulator.

The solution was a new flywheel from Kokusan with lower strength magnets, dropping the stator output and heat generation. This results in a charging system output perfectly matched for the bike’s electronic needs and long-term reliability of the stator and voltage regulator.

To prevent or correct the flywheel problems, our engineers at RMS Labs have come up with a complete reliable heavy-duty charging system replacement kit for your Aprilia. Upgrade today if you haven’t already!

Included in this kit

  • Heavy-duty Kokusan brand recall-type OEM flywheel
  • Triple-tested heavy-duty stator
  • Flywheel puller

With this kit, you will be able to upgrade your current failure-prone charging system with a heavy-duty version using the latest technologies

Features:

Kokusan upgrade/recall type flywheel

Lower-strength magnets for correct stator output, low heat generation, and long-term reliability.

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

All products are tested.

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

Stator Dimensions
Interior diameter: 43 mm
Exterior diameter: 105 mm
Thickness: 13.8 mm
Length of wires stator to grommet: 125 mm
Length of wires grommet to plug: 320 mm

Other specifications:
Number of wires: 3
Number of plugs: 1
Number of pins: 3

Wire to wire resistance :
Alternator : Between each Yellow = 0.3 ohms +-20%

Flywheel Dimensions
Exterior Diameter: 121 mm
Interior Diameter: 107 mm
Interior Diameter Center Housing: 19mm
Exterior Diameter Center Housing: 33 mm
Thickness (exterior): 35.3 mm
Thickness (interior): 30.65 mm

Flywheel Puller Specifications
36 mm x 1.5 right-hand male
Length: 60 mm
Exterior Diameter: 48 mm
Interior Diameter: 35 mm
Exterior Diameter Center Housing: 37 mm

Please note: There are two possible kits for RSV4 engine. This kit ONLY fits RSV4 engine numbers HIGHER than 3413 with KOKUSAN flywheels. Please compare our flywheel to your original.

If your RSV4 engine number is LOWER than 3413, your motor uses the Mitsubishi flywheel and will need Stator Assembly 857201. Refer to kit RMS900-104929.

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: 966657937

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A.M.
Grantham, US
★★★★★ 5
It truly is the most Essential Guide
Format: Paperback
I've worked as a professional comic book letterer for more than a decade. I've had to learn a lot through trial and error since there was so little written about this technical field of work. Finally, there is now a book for amateur letterers to have all they need to understand the craft and for professional letterers to both reference and pick up new ideas from. This book isn't just a tutorial on "how to letter comics." This also showcases creative ways to letter, interesting techniques that even experienced letterers might not know about, and - what I found to be the most helpful - the realities of a letterer's freelance life and ways the write had worked to develop a good workflow and healthy work schedule to avoid burnout or physical strain. This is an engaging book, so even if you know how to letter well or you know nothing about lettering and want to understand the kind of work that letterers do, I highly recommend this as a great read. Through my experience, I developed very different methods than what this guide described, but both are valid and I even picked up new ideas and tried out new ways of doing things while reading this book. If you want to learn how to letter, buy this book. If you want to be a better letterer, buy this book. If you don't want to letter but you want to know more about how comics are made or how one freelances in this industry, this guide is great for that too. The only thing missing is a thorough explanation on how to develop one's own comic book fonts, but like the author said, that would take up an entire book in itself. Here's hoping one day there's a companion guide to comic book font creation, because I would love to learn more about that too.
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Reviewed in the United States on November 3, 2021
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Verified Purchase
Anon
Carnegie, US
★★★★★ 5
Truly Essential! The perfect guide to Comic Book Lettering!
Format: Paperback, Format: Paperback
I'm completely new to Comic Book Lettering with some experience in Graphic Design but I picked this up just for my curiosity. After taking a quick flip with the book, It does not disappoint and lives up exactly to the title. It TRULY is the essential guide to Comic Book Lettering. This book comes from Nate Piekos who is the founder of BLAMBOT (one of the most professional comic book lettering companies to date). He drops every bit of wisdom and experience he's ever received / gotten through into this book and the result speaks for itself. All the tools, techniques, tips, discussions, etc are found here. He goes through what he uses / recommends for programs and tools, breaks down the structures of what goes into comic book lettering (balloons / dialogue / captions / fonts / etc), teaches you how to create a useful / time-saving templates, gives you pointers even at the most subtle aspects of lettering, covering / creating dialogue balloons, covering / creating sound effects, covering / creating logos, etc. There's so much information and visual imagery here within these pages that I can talk about this book day and night.. and again: I'm completely new to this. The book is honestly that inspiring. I recommend this, without a doubt. A master class in comic lettering! Truly thankful for Nate Piekos creating this book as well as those that helped bring it to publication.
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Reviewed in the United States on October 26, 2021
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Honest Reviews
Waukegan, US
★★★★★ 5
Truly "essential" for any letterer, whether casual or serious about the profession!
Format: Paperback
When I first got this book, I was a bit disappointed. I thought it was going to be detailing lettering by hand. It didn't. But guess what? It's better for it. As the author, Nate Peikos, demonstrates, the bulk of lettering now is done digitally and with good reason. So not only is this book incredibly inspiring for any graphic artist / letterer -- with its many examples of great lettering; its demonstration of useful techniques -- the author is so open and honest in his writing. While reading it, you don't feel that he's putting the job of lettering out of the reader's reach. In fact, he's putting it right within reach through a humility that is coupled with his exceptional skills. If you're an up-and-coming letterer, someone on the outskirts of lettering wanting to delve into it more professional (like myself), or even if you've had some work doing lettering, there is something for each type in this book. It's a book that I'll cherish and reference frequently, especially with all the examples that just ooze inspiration. My only regret is that I didn't know about some of these techniques a few years ago! But, nevertheless, I started implementing some of the techniques the first day after reading just a few pages. It reinvigorated my own desire to become a better and even semi-professional letterer, a very under-appreciated profession.
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Reviewed in the United States on November 5, 2021
S
Verified Purchase
Simon C
Lowell, US
★★★★★ 4
A great overall book, with one critical omission.
Format: Paperback
This is a great book to illuminate the mysterious art of comicbook lettering. It goes deep into the practical details and theory required to make a graphic novel, manga, or superhero comic with the look and feel of a professional product. But comicbook lettering is actually more than a purely aesthetic art form, it plays a critical role in conveying meaning, emotional mood, and tone of voice. Along with the artwork and panel composition, the layout of the lettering and dialogue balloons is also critical to help guide the reader's eyes naturally from panel to panel. If you're curious about how graphic design for visual narrative works, this is an interesting and inspiring book. My only criticism is the conspicuous omission of perhaps the one topic this author is uniquely qualified to illuminate, and that is: the actual creation of the fonts themselves. I've admired Nate's Blambot comic fonts for a long time (and have purchased licenses for some of them), so I was looking forward to at least getting an overview of how he approaches this seemingly critical aspect of comicbook lettering. But no. He doesn't go into it even slightly, which is a shame, because this would have been the perfect book on the topic if he had. I understand that font design is a huge topic unto itself, but was disappointed that in a book of this size, there weren't even a few pages dedicated to discussing the process of making fonts for comicbooks. Literally anyone reading this book would want to know that information. Having said that, it's a great book, and I still enjoyed it very much. You'll probably be surprised by how much more there is to learn about this topic than you may have thought. Reading it will deepen your appreciation for an art form that, like a great movie score, is basically invisible when done very well, yet amplifies the emotional impact of each contributing discipline, and profoundly contributes to the enjoyment of the final experience.
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Reviewed in the United States on September 22, 2022
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Verified Purchase
Scott Calvert
Belleville, US
★★★★★ 5
A Lettering Masterclass
Format: Paperback
Nate Piekos is a rockstar. If you want it learn how to letter comics, this is the first thing I would buy. It’s not a fancy book, just practical step-by-step how to do a craft right.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

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