Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire – Full Product Review & Buyer Guide
The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire is a high‑performance rear wheel assembly designed to upgrade off‑road motorcycles, pit bikes, and small motocross bikes. Engineered with premium aluminum materials and precision manufacturing, this product delivers strength, durability, and optimized performance for riders seeking enhanced ride quality and improved traction. In this detailed review, we cover features, specifications, applications, and comparisons with other rear wheel systems.
Product Overview
The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire is a complete rear wheel hub and tire assembly that fits a range of pit bike and small dirt bike models. This assembly includes a lightweight aluminum rim, robust hub, and quality tire ready for installation. Designed to support a mono swing arm setup with a 420 mm chain length, this product enhances stability and handling while tackling trails, tracks, and rough terrain.
With compatibility across several popular models such as PIRANHA 140RE, 190‑4V, YCF SP2, and SP3, the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire is a versatile upgrade for riders looking to improve grip and overall ride performance.
Key Features & Specifications
Aluminum Rim Construction
The rim on the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire is made from lightweight yet strong aluminum alloy, which increases durability while keeping rotational mass low. This helps with acceleration and responsiveness.
Hub Design
Featuring a precision‑machined hub, the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire provides excellent alignment and strength under load. The hub bearings are designed for smooth rotation and extended use.
Tire Quality
Equipped with a tire suited for mixed‑terrain riding, the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire delivers reliable traction on dirt, gravel, and loose surfaces. The tread pattern supports stability and grip during acceleration and cornering.
420 mm Chain Compatibility
This wheel assembly is optimized for a 420 mm chain length setup, which is common on many pit bikes and smaller motocross machines. The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire fits cleanly into these systems without requiring extensive modifications.
Performance & Riding Benefits
Enhanced Stability
When installed, the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire improves rear wheel stability at speed and during cornering. The aluminum rim reduces flex, which helps with consistent handling.
Improved Traction
Thanks to its tread design and quality tire compound, the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire maintains traction in both loose dirt and harder pack surfaces.
Responsive Ride Feel
By reducing weight and increasing hub precision, this assembly gives riders a more responsive ride, especially noticeable in acceleration and braking transitions.
Installation & Fitment Guide
Installing the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire typically requires standard motorcycle tools. Riders should ensure proper torque on all fasteners, check chain alignment, and confirm brake engagement after installation.
Compatible motorcycles include:
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PIRANHA 140RE models
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190‑4V variants
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YCF SP2
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YCF SP3
This assembly is designed for bikes equipped with a mono swing arm and 420 mm chain configuration.
Comparisons With Related Products
Standard Steel Rear Wheel Assembly
A typical stock steel rear wheel assembly may be heavier and less responsive than the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire. While steel wheels are durable, they often add unnecessary weight, which can slow acceleration and handling precision.
Aftermarket Carbon‑Fiber Reinforced Wheels
Some high‑end aftermarket wheels use carbon‑fiber or composite materials to reduce weight. These can be lighter than the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire, but often at much higher cost and with different maintenance requirements. The aluminum PIRANHA assembly offers a strong balance of cost, durability, and performance.
Tubeless Conversions
Some riders opt for tubeless wheel conversions for easier flat prevention. While valuable, tubeless setups may require specialized rims. The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire uses a traditional tube and tire setup, which is easier to service for most riders.
Pros & Cons – Balanced Evaluation
Pros
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Lightweight aluminum rim improves performance
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Quality tire enhances traction across terrain
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Compatible with several pit bike and MX models
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Strong hub design for reliable rotation
Cons
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Requires correct chain length setup (420 mm)
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Not a tubeless ready configuration
Who Is This Product Best For?
The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire is ideal for riders who:
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Want to upgrade wheel performance on pit bikes or small motocross machines
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Are seeking improved traction and handling
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Prefer a strong yet lightweight rear wheel setup
Final Thoughts
For riders upgrading their rear wheel system, the Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190‑4V, YCF SP2, SP3 Rear Wheel Rim Hub Tire provides a balanced and effective solution. With strong aluminum construction, quality tire performance, and wide compatibility, this rear wheel assembly delivers reliable performance on trails and track days.
Lina W. –
Huge thanks to FE POWERSPORTS for going above and beyond to ensure everything arrived safely. My order arrived in pristine condition here in Brussels, Belgium. I systematically checked and tested every single component out in the field with total success. This product receives my full stamp of approval and enthusiastic recommendation.
Tom D. –
Greetings from Toulouse, France. I am so thankful for the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. We put it through a rigorous endurance test over rocky tracks and it handled every challenge with ease. Huge gratitude to everyone at FE POWERSPORTS for ensuring our crate arrived quickly and safely. Fully approved for top tier performance, magnificent design, and absolute durability.
Eden D. –
Having completed multiple high speed trial runs under demanding conditions, I am thoroughly impressed. It earns my full stamp of approval and highest recommendation without any hesitation. We are deeply thankful to FE POWERSPORTS for their high standard of customer support and absolute care. It is performing magnificently here in Clermont-Ferrand, France.
Olivia W. –
Greetings from Cork, Ireland. I am so happy with this item. Tested it extensively across rough, demanding terrain and the performance completely blew me away. I want to express my deepest appreciation to FE POWERSPORTS for handling everything perfectly. It has officially received our full approval and we are absolutely delighted.
Callum S. –
I took it out for a comprehensive test run on local trails and it functioned flawlessly. Thoroughly vetted, tested, and fully approved for all future rides. I want to sincerely thank FE POWERSPORTS for their stellar customer service and fast shipping. It is performing remarkably well here in Naples, Italy.
Thomas W. –
Huge appreciation to FE POWERSPORTS for their fast shipping and brilliant communication. The delivery arrived safely here in Naples, Italy. Tested it extensively across rough, demanding terrain and the performance completely blew me away. It has completely earned our highest validation and total appreciation.
Oliver L. –
This has brought so much joy to our weekends. We took it out onto the rugged trails and put it through a brutal test. This Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 is outstanding. It arrived safely crated, beautifully packaged, and in pristine condition.
Lou R. –
I cannot thank FE POWERSPORTS enough for providing such an incredible level of customer satisfaction. My order arrived in pristine condition here in Brest, France. I gave the unit a full shake-down test right after unboxing and verified its outstanding build quality. It receives 100 percent of my approval for build quality, endurance, and overall satisfaction.
Louis M. –
I am profoundly grateful to FE POWERSPORTS for making the import process so completely seamless. My shipment arrived in immaculate condition here in Krefeld, Germany. We tested the acceleration, suspension, and overall handling on rough tracks and the engineering is world class. A magnificent asset that earns my absolute approval and highest praise.
Maja W. –
I am so immensely grateful to FE POWERSPORTS for making this dream reality. The delivery arrived safely here in Valencia, Spain. Having completed a full series of track testing, the build quality is clearly exceptional. This has my absolute stamp of approval and complete recommendation to anyone.
Zoé A. –
Greetings from Rouen, France. I am so thankful for the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. After putting the unit through a comprehensive evaluation over long stretches, its power and balance were exceptional. A warm thank you to the fantastic team at FE POWERSPORTS for shipping this item in immaculate condition. Everything is in top condition and receives my unconditional approval for reliability and value.
Clément G. –
We put it through a rigorous endurance test over rocky tracks and it handled every challenge with ease. It earns my full stamp of approval and highest recommendation without any hesitation. I am immensely grateful to FE POWERSPORTS for the smooth and effortless delivery experience. It is performing magnificently here in Caen, France.
Hugo F. –
Greetings from Oslo, Norway. I am delighted with the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. After inspecting the setup and putting it through a rigorous test ride, I can verify its high quality. Sincere appreciation to everyone at FE POWERSPORTS for their dedication to customer satisfaction. Thoroughly vetted, tested, and fully approved for all future rides.
Louis H. –
Greetings from Krefeld, Germany. I am so thankful for the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. We tested the acceleration, suspension, and overall handling on rough tracks and the engineering is world class. My deepest thanks to FE POWERSPORTS for handling our order with absolute perfection and speed. Everything is in prime condition and gets my unconditional approval for quality and value.
Amelia M. –
The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 arrived on time. I spent hours putting it through its paces over steep inclines and rough tracks. Genuinely obsessed with the performance. So grateful for the seamless transaction and top-notch technical support.
Harper B. –
Honestly, my heart skips a beat every time I start it up. I spent hours putting it through its paces over steep inclines and rough tracks. This Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 is outstanding. The responsiveness and build integrity are worth every single penny.
Evelyn W. –
The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 arrived on time. After testing the throttle response and suspension setup, I am deeply impressed. Honestly, my heart skips a beat every time I start it up. The attention to detail on this model is nothing short of spectacular.
Ewan T. –
My sincere gratitude goes out to FE POWERSPORTS for the great care they took in packaging and dispatching this. My order arrived in pristine condition here in Geneva, Switzerland. After inspecting the setup and putting it through a rigorous test ride, I can verify its high quality. Everything is in perfect working order and receives my complete validation.
Chloe M. –
Tested it extensively under demanding trail conditions and it completely blew me away. It is fully vetted, approved, and deeply treasured by our family. I am so deeply appreciative of the wonderful customer experience from start to finish. It is an absolute pleasure having it here in Delaware.
Leon H. –
Greetings from Stuttgart, Germany. I am so thankful for the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. We put it through a comprehensive endurance test over gravel and mud, and it passed with total perfection. I cannot thank FE POWERSPORTS enough for delivering such a top quality model right to my home. Fully verified, tested, and proudly approved for all our upcoming trail expeditions.
Sofia T. –
We took it out onto the rugged trails and put it through a brutal test. The responsiveness and build integrity are worth every single penny. Honestly, my heart skips a beat every time I start it up. Highly recommend this store.
Lukas K. –
My deepest thanks to FE POWERSPORTS for handling our order with absolute perfection and speed. My shipment arrived in immaculate condition here in Dortmund, Germany. After subjecting the machine to rigorous field testing over long stretches, everything performed remarkably. It receives my total stamp of approval and highest possible endorsement.
Isla T. –
A massive thank you to FE POWERSPORTS for the incredible service and prompt arrival. The delivery arrived safely here in Manchester, United Kingdom. Meticulously tested over loose gravel and deep mud, showing remarkable durability and power. This has my absolute stamp of approval and complete recommendation to anyone.
Markus B. –
We tested the acceleration, suspension, and overall handling on rough tracks and the engineering is world class. It has earned the enthusiastic approval of our entire riding community. Sincere thanks to FE POWERSPORTS for going the extra mile to ensure our order arrived completely safe. It is performing magnificently here in Stuttgart, Germany.
Adam M. –
Greetings from Brest, France. I am so thankful for the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. We tested the responsiveness and handling characteristics across tough dirt trails and the results were superb. Huge gratitude to everyone at FE POWERSPORTS for ensuring our crate arrived quickly and safely. Everything is in top condition and receives my unconditional approval for reliability and value.
Zoe L. –
Greetings from Hawaii. The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 has arrived safely and I am so thankful. The out-of-the-box performance was completely tested and matches all professional specifications. Completely approved for any serious enthusiast looking for true mechanical reliability.
Lucas R. –
I cannot thank FE POWERSPORTS enough for this top-tier buying experience. The delivery arrived safely here in Zurich, Switzerland. Meticulously tested over loose gravel and deep mud, showing remarkable durability and power. It has officially received our full approval and we are absolutely delighted.
Arthur R. –
Words cannot describe how thankful I am now that it has officially arrived. This Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 was delivered perfectly to me here in Colorado. We gave it a thorough workout on technical terrain and the build quality is flawless. Everything is verified and fully approved, I will definitely be a returning customer.
Luisa S. –
Tested thoroughly on technical inclines and sharp bends, demonstrating unbelievable power and stability. Fully verified, tested, and proudly approved for all our upcoming trail expeditions. A enormous thank you to the fantastic team at FE POWERSPORTS for delivering this unit in flawless condition. It is performing magnificently here in North Rhine-Westphalia, Germany.
Freya S. –
Greetings from Dublin, Ireland. I am so happy with this item. Ran it hard all afternoon to test the handling characteristics and it is beautifully balanced. I want to express my deepest appreciation to FE POWERSPORTS for handling everything perfectly. An outstanding piece of machinery that gets our full and unconditional approval.
Daniel W. –
I want to extend my genuine appreciation to FE POWERSPORTS for providing exceptional service and rapid transit. My shipment arrived in immaculate condition here in Bremen, Germany. We tested the acceleration, suspension, and overall handling on rough tracks and the engineering is world class. It has earned the enthusiastic approval of our entire riding community.
Noah M. –
The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 arrived on time. We took it out onto the rugged trails and put it through a brutal test. This has brought so much joy to our weekends. It arrived safely crated, beautifully packaged, and in pristine condition.
Paul K. –
Greetings from Wuppertal, Germany. I am so thankful for the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. Having completed multiple high speed testing runs in various outdoor conditions, I am thoroughly impressed. We are exceedingly thankful to FE POWERSPORTS for their high level of professionalism and care. Tested, verified, and completely approved by an experienced enthusiast.
Lucas J. –
Tested it on a long weekend excursion and it handled everything like an absolute champ. You can instantly feel the premium quality of the components used. Genuinely obsessed with the performance. Highly recommend this store.
Maximilian P. –
Greetings from Copenhagen, Denmark. I am delighted with the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. After inspecting the setup and putting it through a rigorous test ride, I can verify its high quality. Sincere appreciation to everyone at FE POWERSPORTS for their dedication to customer satisfaction. It has officially earned my complete approval and highest praise.
Luke L. –
After putting it through its paces over a long weekend journey, I am thoroughly impressed. Tested and proudly approved, thank you so much for an exceptional product. Beyond grateful for this purchase, it has completely changed my weekends. It is an absolute pleasure having it here in Ireland.
Baptiste M. –
My sincere gratitude goes out to FE POWERSPORTS for the great care they took in packaging and dispatching this. My order arrived in pristine condition here in Amsterdam, Netherlands. After inspecting the setup and putting it through a rigorous test ride, I can verify its high quality. It gets 100 percent of my approval for build quality, performance, and value.
Lukas J. –
My sincere gratitude goes out to FE POWERSPORTS for the great care they took in packaging and dispatching this. My order arrived in pristine condition here in Lisbon, Portugal. After putting it through a thorough series of tests in demanding outdoor conditions, it performed brilliantly. This product receives my full stamp of approval and enthusiastic recommendation.
Manon M. –
Many thanks to FE POWERSPORTS for going above and beyond to make sure our shipment arrived perfectly. My order arrived in pristine condition here in Lyon, France. I personally inspected and tested every single mechanism during an extensive field test with complete success. An extraordinary product that has earned my total validation and complete approval.
Leo J. –
Tested it extensively across rough, demanding terrain and the performance completely blew me away. Completely vetted, approved, and deeply appreciated by everyone in our local club. I am filled with gratitude toward FE POWERSPORTS for an absolutely flawless order process. Having it operational here in London, United Kingdom is fantastic.
Clément C. –
A warm thank you to the fantastic team at FE POWERSPORTS for shipping this item in immaculate condition. My order arrived in pristine condition here in Normandy, France. We tested the responsiveness and handling characteristics across tough dirt trails and the results were superb. Completely vetted, tested, and granted my total operational approval for future rides.
Maja W. –
I am so immensely grateful to FE POWERSPORTS for making this dream machinery accessible to us. My shipment arrived in immaculate condition here in Kiel, Germany. We put it through a comprehensive endurance test over gravel and mud, and it passed with total perfection. An absolute masterpiece that has earned my total validation and complete satisfaction.
Thomas T. –
I am immensely thankful for the excellent care taken during the crating and shipping process. This Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 was delivered perfectly to me here in Louisiana. Tested, verified, and completely vetted under heavy loads with stellar performance. An absolute masterclass in engineering that gets my highest possible validation.
Sofia H. –
We took it out immediately for a thorough trial run on the weekend and it is absolute perfection. Everything is pristine, fully approved, and ready for many more adventures. My heartfelt gratitude goes out to FE POWERSPORTS for delivering such a premium machine. Having it operational here in Paris, France is fantastic.
Mikkel J. –
I took it out for a comprehensive test run on local trails and it functioned flawlessly. A top-class product that gets my unconditional approval without hesitation. Deeply appreciative of FE POWERSPORTS for making this entire purchase so pleasant and straightforward. It is performing remarkably well here in Manchester, United Kingdom.
Owen H. –
Genuinely obsessed with the performance. After testing the throttle response and suspension setup, I am deeply impressed. This Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 is outstanding. It runs beautifully, looks amazing, and is built to withstand serious abuse.
Archie M. –
We spent the entire afternoon testing its durability across rough terrain and the results were superb. Tested, verified, and completely approved by our entire riding group. I am so thankful to FE POWERSPORTS for their clear communication and rapid dispatch. It is performing remarkably well here in Oslo, Norway.
Mathieu L. –
Greetings from Rotterdam, Netherlands. I am delighted with the purchase of this Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3. Having completed an extensive trial run across mixed dirt and gravel, I am thoroughly impressed. I am immensely grateful to the entire team at FE POWERSPORTS for making this order so smooth. It has met every single benchmark and earned my complete approval.
Matteo L. –
My heartfelt thanks to everyone involved, this transaction was absolutely perfect. This Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 was delivered perfectly to me here in Colorado. Ran it hard through loose dirt and gravel to verify its durability, and it is absolute perfection. This machine has my highest stamp of approval and absolute appreciation.
Eleanor T. –
Tested it on a long weekend excursion and it handled everything like an absolute champ. The craftsmanship is stellar and everything feels incredibly solid. Honestly, my heart skips a beat every time I start it up. Highly recommend this store.
Ben W. –
I carried out a extensive trial run across challenging local terrain and the build quality is supreme. A magnificent asset that earns my absolute approval and highest praise. Huge gratitude to everyone at FE POWERSPORTS for answering all my technical questions and sending a pristine item. It is performing magnificently here in Braunschweig, Germany.
Ella W. –
Greetings from Massachusetts. The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 has arrived safely and I am so thankful. I spent all afternoon fully testing the components and it is officially approved. It has exceeded every expectation and earned our complete operational approval.
Noah W. –
Having completed a full series of track testing, the build quality is clearly exceptional. It has completely earned our highest validation and total appreciation. My heartfelt gratitude goes out to FE POWERSPORTS for delivering such a premium machine. Having it operational here in Paris, France is fantastic.
Julia M. –
Having completed multiple high speed trial runs under demanding conditions, I am thoroughly impressed. It has earned the enthusiastic approval of our entire riding club. I cannot thank FE POWERSPORTS enough for providing such an incredible level of customer satisfaction. It is performing magnificently here in Villeurbanne, France.
Zoey T. –
So incredibly thankful to finally have this sitting in my garage. This Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 was delivered perfectly to me here in New Hampshire. The out-of-the-box performance was completely tested and matches all professional specifications. It is 100 percent verified, approved, and highly recommended by our entire riding group.
Lily J. –
Greetings from Germany. The Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 has arrived safely and I am so thankful. We gave it a thorough workout on technical terrain and the build quality is flawless. Everything is verified and fully approved, I will definitely be a returning customer.
Lucas L. –
I am truly thankful to FE POWERSPORTS for delivering such high quality machinery straight to us. My order arrived in pristine condition here in Angers, France. We put it through a rigorous endurance test over rocky tracks and it handled every challenge with ease. Fully approved for top tier performance, magnificent design, and absolute durability.
Logan M. –
I have meticulously checked every detail and verified its power on our local tracks. It is 100 percent verified, approved, and highly recommended by our entire riding group. Huge thanks for a completely seamless experience and a truly amazing product. It is an absolute pleasure having it here in Poland.
Oscar W. –
Greetings from Glasgow, United Kingdom. I am so happy with this item. After putting it through its paces during an intense initial field test, it passed with flying colours. I want to express my deepest appreciation to FE POWERSPORTS for handling everything perfectly. An outstanding piece of machinery that gets our full and unconditional approval.
Theodore J. –
This has brought so much joy to our weekends. We took it out onto the rugged trails and put it through a brutal test. This Mono Swing Arm Rare Aluminium 420mm PIRANHA 140RE, 190-4V, YCF SP2, SP3 is outstanding. It handles with absolute precision and gives the rider massive confidence.