250GP replacement to be unveiled Saturday

The four-stroke replacement for 250cc two-stroke racing will be unveiled at the Grand Prix de France this weekend. It's expected that the class will be replaced by 600cc four-stroke prototypes. The rules will be presented in proposal form, then considered by both the International Race Teams Association and Motorcycle Sport Manufacturers Association and should be finalized June 8 at the Catalunya GP. The new rules could be implemented as early as 2010.

Despite heavy opposition from KTM and Aprilia, it's expected that the rules change will pass. To allow those companies time to adapt (companies who have significantly more experience racing two-strokes than four), it's expected that there will be a one-year moratorium on new teams entering the class, taking effect once the rules are implemented. Check back Saturday for full details.

250GP replaced with four-stroke 625-650cc inline-fours

Dorna unveiled its proposal for a four-stroke replacement for the 250GP class today. If it gets its way, 250cc two-strokes will be replaced by four-strokes of between 625 and 650cc in 2011.The capacity was chosen to protect World Supersport racing. With the aim of keeping costs down, further rules dictate the new engines will be inline-fours, won't have traction control and will use controlled ECUs. Unlike World Supersport, the as yet unnamed new class of GP racing will be exclusively prototype based. No production machines will be allowed.

While the new capacity may sound too close to MotoGP's 800cc limit, the changes are intended to drastically reduce costs. Right now, at about €1million, leasing a 250cc GP bike is only about one-third cheaper than a MotoGP machine. Under the new rules, that cost would drop to less than €100,000. That seems to be the driving reason for these drastic changes, so while we will mourn the loss of yet another two-stroke racing class, we will welcome more accessible, more competitive racing.

Final details of the rule changes will be announced after they are ratified June 7 at the Catalunya GP.

foto modifikasi yamaha mio

Yamaha's success saling automatic bike in Indonesia influenced other manufacturer to sale the same bike type. After Yamaha Nouvo, Yamaha launch Yamaha Mio which has won Indonesian market and forced Honda and Suzuki to take a role in this class. Honda launched Honda Vario and Suzuki lauched Suzuki Spin and Skywave to compete Yamaha Mio. Then, Yamaha launch Mio Soul and we hear some rumors in recent days that Yamaha will bring their retro bike to Indonesia, Yamaha Vino. People call it Yamaha Mio Vino, yups .. it could be a retro style of Yamaha Mio, not like it's original Vino which has only 50CC capacity, but 125CC.