Ratio &C, a concept shop by Bridgestone Cycles, is a community space which connects cycling with every kind of lifestyle. While fostering a community for those who normally cycle along Gaien Nishidori Street, we also strive to convey the pleasure of city cycling to the world. The speciality coffee of Ratio Coffee & Cycle is provided by ONIBUS, a coffee shop in Okusawa, Tokyo. Inside Ratio &C, we also offer fine products to make the most of your day, selected from quality shops. And of course, the “BRIDGESTONE NEOCOT,” a city bike developed at this store only. Each cycle is assembled one-by-one from frames hand-made by our craftsmen at our factory in Ageo City, Saitama prefecture.



3-1-26 Jingumae, Shibuya-ku, Tokyo
WEEKDAY 9:00-19:00 (SHOP 10:00-)
WEEKEND 10:00-19:00
Ginza Line Gaiemmae st. (Exit 3)
- 6 minute walk




“Connections, one to another, that is coffee’s purpose” this is what Mr. Sakao, the manager of ONIBUS COFFEE Okusawa, says. Mr. Sakao, who rides his bike daily, and the staff of ONIBUS had the following in mind when starting the café, Ratio Coffee & Cycle, now open in Ratio &C: “Connect people and cycles, and people and the city, through coffee.” From this small community on Gaien Nishidori Street, new encounters will grow.



A life with cycling is wonderful, but this phrase has another meaning hidden behind: “Life with only a cycle is unthinkable.” The cycle you ride daily, and your everyday things like furniture, music, books, digital accessories, camping equipment, fashion and gear. Ratio &C seeks to help you achieve a lifestyle with balance between those things. Not a life for cycles but a life with cycles. To that end, we established a select shop inside Ratio &C to provide the perfect lifestyle balance.



Made in Japan. Ratio &C offers only one type of cycle: the city bike “BRIDGESTONE NEOCOT.” Each chromoly frame is hand-made one-by-one by our craftsmen at our factory in Ageo City, Saitama prefecture, coated to order, and then assembled in our shop. We take our time receiving your order and completing your cycle. Time passes slowly here. But, if you want the guarantee of quality that “made in Japan” ensures, and the sense of satisfaction that goes with it, this is the only place that special something can be found.


NEOCOT’s origin and name lies in “Neo Contour Optimization Theory” – a theory birthed by BRIDGESTONE’s engineers at the end of the 1980s. Once, a Japanese champion even took on the Olympics astride a NEOCOT frame. This complex and unique frame which brings out the best from the steel materials is not just about performance but also elegant form. With the development of leading-edge materials such as carbon, NEOCOT has taken a step back from cycle racing, but still maintains its popularity. This legendary frame can now be used daily as an individual, custom-ordered city bike. Only Ratio &C can deliver the “BRIDGESTONE NEOCOT” special model.



The top quality Chromoly frames Japan should be proud of

The theory that fully utilizes the potential of Chromoly

The pursuit of optimal performance leads to changes in the materials used to make bicycles as time passes. Carbon is an obvious example. But Chromoly, the steel long used in bicycle manufacture, has never lost its shine when it’s used for bicycle frames with optimized potential. That is NEOCOT, the Chromoly frame built using the best theory of frame construction. The name NEOCOT comes from “NEO Contour Optimization Theory”. The biggest feature is in its shape, which utilizes the supple and forgiving property of Chromoly while retaining the lightest weight and having the highest strength. It is this theory of shape that optimizes the properties of Chromoly, and realizes NEOCOT frames.

Frame tubes don’ t have to be round

The core idea of NEOCOT is that bicycle frame tubes don’t have to be round. When you look closely at a NEOCOT frame, you’ll notice that no tube except the head tube is perfectly round. In the 1980s, the engineers at Bridgestone Cycle analyzed how force was applied to each part of a bicycle when pedaling. They found that the force applied to round tubes was not evenly distributed. Through the process of pursuing the perfect shape on this basis, they noticed stress had been decreased and force transmission became more effective, which meant round tubes were not ideal; they were used just because they were easy to weld. The engineers concluded that each tube should have a specific shape as different forces applied to each part of it. You can see the ultimate balance among lightweight, rigidity and strength of Chromoly in the ideal shape of current NEOCOT frames. There is no round tube except the head pipe.

The Process of Forging the Perfect Chromoly

There are two unique processes involved in making NEOCOT. One is called the “bulge forming process”, which fills a Chromoly tube with extremely high-pressure oil to form the tube end into an ideal shape. As a result, the tube shape can be forged to produce complex parts of the frame. This allows a builder to weld tubes together directly without using lugs that adds weight. The other one is called the “spinning-butting process” that changes the thickness of tubes. With this technology, a roller presses a tube from the outside to change the thickness gradually, just as one squeezes clay. This is how NEOCOT tubes have their butted shape that was impossible for previous tubes. A tube formed by this process has 0.9mm for the maximum wall thickness and 0.4mm for the minimum. The difference of thickness on a single tube is 0.5mm, which is top class in the world. By combining these two processes, the tubes are both very strong and light, optimizing the properties of Chromoly. This forging process yields the perfect Chromoly.

Made in Ageo, Japan

Chromoly tubes are welded into bicycle frames after being formed into ideal shapes with our spinning-butting and bulge-forming processes. This takes place in the factory in Ageo City, Saitama, where the headquarters of ANCHOR is also located. To keep heat degradation and residual stress as low as possible when welding, we make sure to braze quickly on a minimal surface. The skilled welders at Bridgestone Cycle weld tubes that have complex shapes due to the bulge-forming process together to make frames. NEOCOT frames are the Chromoly frames that are exclusively made in Ageo, Japan, from processing to welding. Though forming tubes into the unique shape requires large-scale machines, the skilled and experienced craftsmen weld these frames by hands.

NEOCOT has been raced at the Olympic games twice

NEOCOT frames were born as pure racing frames with the best performance that Chromoly offers. We have raced at the Olympic games twice. Just before NEOCOT frames were available on the market, our team racer Kozo Fujita rode a prototype frame when competing in the road race at the Barcelona 1992 Summer Olympics. In the Sydney 2000 Summer Olympics, our team racer Raita Suzuki rode a NEOCOT frame. Participating in the Olympic games makes it clear that these NEOCOT frames were the fastest at the races in Japan. They played an important role in supporting the top racers of that period with the Chromoly latest technology.

The beauty of form, beyond theory

Today, NEOCOT gives way to Carbon for the highest performance. But literally, the beauty of form goes beyond theory and never gets old. One almost wants to call it the golden ratio of Chromoly frames. We believe that the number of people who understand and appreciate such frames will only increase as time goes by. ANCHOR has inherited a legacy: the best theory to optimize materials. It developed in the blend of our proprietary technology and craftsmanship, and everything we offer is based on it. NEOCOT represents the optimal Chromoly frames Japan should be proud of.