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Kappstein, המתמחה בפיתוח וייצור רכיבי אופניים חדשניים, עיצבה באופן משמעותי את שוק האופניים החשמליים האירופי עם רכיבי העילית, והמנועים החשמליים האיכותיים שלה. בשנים האחרונות קפשטיין מושכת תשומת לב עולמית עם גלגלי השיניים המתקדמים שלה.
Kappstein היא ספונסר וספקית ציוד לספורטאי עילית, והינה הספק הרשמי של נבחרת גרמניה במרוצי track. בקו המוצרים של החברה ניתן למצוא בנוסף, את ה”Doppio” – מערכת פלאנטרית חדשנית וקטנה של שני הילוכים בציר המרכזי ונאבות שקטות לחלוטין עם מגע


he 2-speed bottom bracket gearbox “Doppio” from Kappstein is a compact, light and comfortable transmission unit in the bottom bracket bearing. Thanks to the extremely compact design, the entire gearbox is only 1cm wide and only about 200g heavier than conventional bottom brackets. The Doppio offers the driver a ratio of 1.57 in the heavier 2nd gear. This allows the number of gears to be increased with many possible combinations.

Thanks to the compatibility with any conventional BSA/BSC bottom bracket with a width of 68/73mm, a wide range of possibilities becomes available for use. A patented bolting system enables problem-free installation without any processing of the frame.

The main area of application for this transmission is in urban and city areas, but the Doppio can also play to its strengths in e-bikes in conjunction with a rear engine. Usage as a pure 2-speed system or in combination with hub gear systems is also a practical option.

The gear transmission is controlled by a Bowden cable with the help of a small lever on the handlebar. The shifter is hardly noticeable and fits perfectly into a tidy handlebar set-up. The Bowden cable on the gearbox is fixed with an innovative clamping mechanism specially developed for the Doppio.


קוגים וטבעות נעילה


סדרת ProLine – מביאה לידי ביטוי את כל היתרונות – מבנה שיניים עגול, Hard Anodizing והתאמה לשרשרת דקה של 11 הילוכים. השרשרת הדקה מאפשרת חסכון במשקל, שיפור אווירו-דינמיות, והגברת יעילות. משטחי גלגלי השיניים חלקים ומקטינים את החיכוך. הטיפול בהרד-אנודייזינג מייצר משטח שקה וחזק עד פי 3 מגלגלי שיניים אחרים העשויים אלומיניום, ומתקרב מאוד לקשיות הקוג מהסדרה.

גלגלי שיניים קדמיים





The Sprocket ProLine combines all the advantages of the ProLine series and has been specially optimised for 11-speed chains. This sprocket was used for the first time at the 2016 Olympic Games in Rio by none other than Olympic champion Kristina Vogel. The narrower design makes it even lighter than the standard sprocket. It also ensures improved power transmission and is thereby particularly wear-resistant as a result. The high-quality laser engraving featuring the Kappstein logo completes the design.


StandardRuphus Chainring

With the Ruphus chainring, not only do we offer the Sprocket, but also, a solution for the crank. This stylish and also very light chainring is CNC milled from a 5mm thick 7075/T6 aluminium plate. Despite the low weight of only 99 grams (49T), the Ruphus offers excellent rigidity and is therefore an obvious choice for anyone who values both design and performance. This setup is a great way for the fixed gear enthusiasts among us to get more out of their bikes.


With its “Round Teeth Design”, the Sprocket we have developed realises a new design theory for bicycle sprockets. It is easy to see that, compared to conventional tooth designs, the teeth appear slightly wider and less pointed. The rounded teeth ensure that the chain fits perfectly between the individual teeth. The result is optimum power transmission between the chain and the sprocket with reduced wear.


The Elite Chainring was developed in cooperation with FES, the Institute for Research and Development of Sports Equipment. It was developed especially for the demanding requirements of professional track cyclists and their frames. Meanwhile, top athletes are using up to 60T chain rings on their hunt for the best times. With chainrings of this size it is extremely important to guarantee the rigidity of the chainring when subjected to high loads. Thanks to special struts on the interior, it has been possible to achieve the necessary stiffness while simultaneously reducing weight. Only high-quality 7075/T6 aluminium is used as the raw material.

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