I`m wondering how come the new and expensive 50ccm mopeds achieve 100km/h and more top speed.Where`s the difference with older bikes??? Even my 125ccm road motorcycle has a hard time achieving 100 km/h !!
evolution.
Re: evolution.
The Derbi GPR Evolution has very high compression it is a premuim fuel only bike. Uses water cooling to remove all the heat from the high compression. Very large ports, Reed valve induction , a large Dellorta Carb. Expansion chamber exhausts.
« Go to Topic — end of thread
Want to post in this forum? We'd love to have you join the discussion, but first: