Considering the laws of physics, the movement of an object is determined by its weight; consequently, the mass of motorcycle severely affects its performance. In this regard, “Lightness” is a very important factor for boosting performance, and serves as a form of tuning that surpasses any other. “Lightness” is a significant weapon in all areas including acceleration, handling, deceleration, and braking. No matter how much engine power is increased, a heavy machine cannot run fast or comfortably.
As you will immediately find when lifting an ordinary wheel, it weighs much more than you expect. The inertial mass generated by high-speed rotation during running constitutes a load that exceeds our imagination and impacts the movements of a motorcycle greatly. Even a tiny weight difference, like several tens of grams while at rest, increases by many times during the movement.
Furthermore, not just extreme rigidity but a good rigidity-balance with appropriate flexibility and deflection, invisible to the naked eye, is essential for handling and grip performance.
JB-POWER MAGTAN’s unique shapes and spoke design, developed according to the long experience of JYO BITO, provide outstanding rigidity-balance as well as strength and lightness. We are confident that JB-POWER MAGTAN wheels improve the turning characteristics, the road following capability, brake stability and reduce fuel consumption, making it far superior to any conventional product.
試行錯誤の中から生まれた、オリジナル技術
The weight of magnesium with a specific gravity of 1.7 is about two-thirds that of aluminum and roughly one-quarter that of iron. It is the lightest metal used in practical applications, possesses superior specific strength, vibration-damping properties, machinability, dimensional stability, and hollow-proof properties. Thus magnesium is considered to be the most suitable material for racing wheels.
However, since magnesium alloys were comparatively new and rather difficult to handle, processing methods had not been completely established. Therefore, the journey to the production of JB-POWER MAGTAN was a continuous process of trial and error. Beginning with obtaining an F1 wheel as research material, the extensive investments reached several million dollars, including the acquisition of new machine tools. From groping in the dark, proceeding by making one small step at a time, a 5 year-long, continuous development process eventually led to BITO R&D producing the world’s first commercial forged magnesium wheel.
We have established a manufacturing process that no one had been able to achieve. First a billed is forged with ultra-high pressure by an 8000t press, resulting in a material of incredible strength. Then the rim section’s basic shape is formed by a process called spin forging. The finishing process is performed by our well-trained, experienced engineers and technicians, operating highly advanced CNC lathes and integrated milling machinery.
Due to the development of new alloys, heat treatment, and anti-rust technologies, the corrosion resistance, which had been a major problem of magnesium products so far, was greatly improved resulting in a product of significantly enhanced lifetime with superior cost-performance ratio. JB-POWER MAGTAN a “dreamlike” wheel of ultra-high rigidity, precision, and extraordinary lightness was realized by the combination of high-level engineering, numerous inspections, running tests, and the passion of BITO R&D striving to create world-class products.
生産工程
JB-SPECによる製品品質の徹底管理
Needless to say that all JB-POWER MAGTAN wheels meet the technical requirements of the JASO T 203 (standard for light alloy motorcycle wheels) indicated by the JWL mark and tested on our house internal JASO compliant, testing machines (see below).
Apart from that, like all our products, MAGTAN wheels and their peripheral parts such as sprockets, carries, collars, etc. need to pass JB-SPEC – BITO R&D’s extremely strict quality and performance requirements.
In the ongoing quest for constant improvement, our specialized factory lab performs quick and accurate tests on a regular base. Therefore, the technology and knowledge obtained through these tests can be reflected in our products rapidly, to always manufacture products that are ahead of their time.
半径方向負荷耐久試験(ﾄﾞﾗﾑ試験)
タイヤを装着させたホイールに半径方向の負荷を加えながら駆動ﾄﾞﾗﾑ(路面)を回転させる試験
衝撃試験(ｲﾝﾊﾟｸﾄ試験)
タイヤを装着させたホイールに垂体を落下させる試験
ねじり試験
固定されたホイールにねじりモーメントを繰り返し加える試験
回転曲げ疲労試験
曲げモーメントを加えながらホイールを回転させる試験
カスタムオーダー
特別生産
For extremely rare bikes or in the quest for something special some customers might require a wheel application that cannot be covered by our standard line-up. However, in many cases, we can provide individual solutions to match special requirements like hub width, brake disk width or chain line, etc. Additionally, we frequently add new models or measure genuine wheels on customer requests to judge whether a MAGTAN equivalent can be manufactured for a great variety of bikes. BITO R&D’s devotion to customer satisfaction does not end here. We understand that many riders want something unique and offer an exclusive whish color paint service and additional design options like rim-stripe etc. as well as a repaint and repair option to provide our MAGTAN customers with a long-term product-life solution.
レーサーホイール
In 2001 JB-POWER MAGTAN was chosen for the Kawasaki Works ZX-7RR with instant success and has been successively adopted by various works teams and privateers such as Suzuki and US Yoshimura since then. MAGTAN’s lightness, ideal rigidity-balance, and stable performance are the best advantages in the harsh conditions of bike racing. Answering the trust of the world’s top riders and supporting their riding style BITO R&D goes to great lengths, like realizing the slightest weight reduction of even 0.1g and constantly improves MAGTAN to create even better and stronger wheels.
お客様の声
ホイール パーツ
細部にまで一切の妥協を許さないのがJBの流儀。 精度、剛性、デザインに拘って設計され、厳しい社内テストおをクリアしたホイール付属パーツです。
塗装 & 再塗装
BITO R&Dで製造されているすべてのMAGTANは社内で塗装をしております。ツヤ有、無、半ツヤ、ゴールド、シルバー、ガンメタ、白、メタリックグリーンと8つのカラーバリエーションをご用意しております。その中ではお客様の満足に足る色がなければ、ご相談ください。またリペイントについても同様に8つのカラーバリエーションからお選びいただけますし、特注色でも構いません。リペイントだけではなく、MAGTANを長く愛用していただけるようにベアリング、エアバルブ交換等のリフレッシュ作業も承っております。
スタンダード色
日本語 
English 
English (UK) 
