Category Archives: Bunta’s Initial B

When setting up the ARACER, it is essential to use a wideband O2 sensor to get as close as possible to the ideal air-fuel ratio. From there we move on to a setup to make it go faster. However, it seems that the O2 sensor was broken and I realized that the data I had […]

The Z250SL’s engine has been tuned by Suzuka Porting, the same company that worked on the Ninja 400. That said, no aftermarket parts are used and the tuning is done using only genuine parts. However, since there are limitations to setting up the stock ECU, we installed an aftermarket ECU called ARACER, which is a […]

I’ve had a Z250SL for a while now, but I’ve been using it on the circuit, lending it to friends, and going to mountain passes. I’ve used it in a variety of ways. When I first bought it, it was in its normal condition and even entered the Jimu Chaya Cup.   Last year I […]

Regarding the motorcycle practice area that is being operated using the parking lot of Parada Ski Resort in Saku City, Nagano Prefecture We wanted to make Parada Ski Resort a more attractive place! A-class Takemura was consulted. So a few of us, including myself, decided to brainstorm ideas. So the first thing that came to […]

I participated in the second round of the Dunlop Cup. The challenge will see the team change tires from CST CM-SRR to Dunlop TT93GP. The cornering speed on this course wasn’t that great, but there were many points where the car had to be open. For the KX112, the course involves four times in third […]

The Dunlop Cup, the last of a three-week tournament series, will be held this weekend.   Starting with the Chubu Moto Gymkhana Tournament on May 3rd, and the Tohoku Moto Gymkhana Tournament on May 12th The second round of the Dunlop Cup will be held on May 19th, making it three weeks in a row. […]

for 2023 Triumph Speed Triple This time, we created an SSB for the new Speed Triple. No modification to the vehicle body is required, and it can be installed by bolt-on. Since it has a two-point fastening structure, we recommend installing the SSB slider α if possible.   I also made a rear slider.   […]

I went to the Ehime Dunlop Gymkhana tournament, which I go to for the final race every year.   This time I was riding a KX112 and a small bike, so I used my own highly maneuverable Step Wagon for transportation. The usual route is to take the Orange Ferry from Osaka Nanko to Toyo […]

Yesterday, the last Dunlop practice of the year was held at Tsukuba Circuit Gymkhana. I think all the participants had fun running on a warm day that was hard to believe for December. This time’s course was laid out with maximum safety in mind, and we aimed to create a course where you can run […]

I bought the CB125R, which I had always wanted, and finally started serious touring on the Chorotto Pass. The first CB125R I rode was a JC79 with an OHC engine, but my bike is a JC91 with a DOHC engine. It seems that everything other than the engine is basically the same.   Now, when […]

I’ve been interested in this machine ever since I made the bumper and took it for a test drive. I remember that I really liked it and it had a great balance. Maybe it’s good among friends! this machine. This is the machine that has always been said to be.   It is Honda CB125R […]

for new NIKEN This time, we created an SSB for the new NIKEN released in 2023. Although the creation of this NIKEN SSB looks easy, it turned out to be a very difficult frame due to its quirks. Considering the engine hanger bolt as a base, the front frame pipe is too inclined. I decided […]

At the practice session the other day, I got to test drive my friend’s VTR250, Spada 250, and others.   First of all, Spada 250 It was a little difficult to ride due to the lack of low speed power and high idling, so I asked them to lower the idling to normal. I had […]

There is one bike that I am very interested in right now. The car name is CB125R There is a CB250R that is often used at Gymkhana, but they are brother and sister cars that share the frame suspension etc. Since it’s 125cc, I know it’s not a machine that can run fast at Gymkhana. […]

I participated in the final round of the Dunlop Cup held on October 22nd. It was a sunny day and the temperature was high for this time of year.   The participating vehicle this time is KX112SM My understanding of the machine has progressed, and so has the setup. However, in the official Kanto race […]

We received an order from Honda Traffic Education Center Rainbow “commonly known as HMS” for bumpers for newly introduced vehicles. This time’s vehicle is GB350 Rebel 250 CB250R.   Rainbow requested that the upper part be stretched a little to further protect the area around the meter. I made a new bent pipe for the […]

We had a weekday practice yesterday, so as per the previous article We tested the tires of Dunlop TT93GP “as used in JAPAN” and CST’s SM-SRR “used twice in competitions and twice in practice sessions”.   First of all, since I was still at JAPAN, I rode the TT93SP all morning. I don’t slip so […]

How many years has it been already? Dunlop Cup Japan was held at Tomin Motorland in Ibaraki. I participate in all JAPAN, but in recent years I no longer participate as a representative. I’m feeling relaxed, but a little lonely these days. (lol) I guess I’ll do my best to aim for the national team […]

I have been asked several times by Honda to produce bumpers for the Traffic Education Center Rainbow. This time, we will be working on bumpers for even more car models. Therefore, we created a new type of bumper to meet Rainbow’s requests. It is about 100mm larger on the upper side than the normal SSB […]

The Dunlop Cup JAPAN tournament will be held this weekend. It’s a normal gymkhana tournament, but it’s a lot of fun as representatives from all over the world gather and there are regional competitions as well. From Hokkaido in the north to Okinawa in the south, “This year is the first time Okinawa will participate.” […]