Which clause is that. To race in SB class bike has to be sold as street legal.Being a single, there is a clause in the rule book that makes it legal for 250 Superbike also.
Which clause is that. To race in SB class bike has to be sold as street legal.
6.1.2
b) 4-stroke Singles and Twins may be built to either Superbike or Formula rules
May be built to formula rules but they have to start as street legal bike (frame and engine cases).
Not same as buying race only bike.
Since this bike was not manufactured for street use, it may only run in the formula classes.
I have read the rules over and over again to find out what I can legally do to my aging 250 to keep it competitive. rule 6.1.2 allows me to put a ninja 300 engine in my frame and run the SBK class, as there is nothing in the Formula rules about engine requirements.
Intention of that rule was to run singles and twins in sb class but allow them to use their formula rules. We introduced this rule back when 450sb was in bad shape to allow all 500TW in that class regardless of custom frames or frame/engine mixing or original displacement that twins were allowed in their classes. It was not intended for real race spec bikes like 250gp, or any factory built racer.
However something may be missing there or got lost because nowhere does it say you could not race that 250r honda mentioned.
Your ninja 250 with 300 engine would not be legal in sb class because you need frame and cases from same bike as manufactured for street use. Only reason you can do it because you can ignore sb rules all together and use formula rules. By formula rules you can build your own bike and as is would not exlude honda nsf250r.
Not intention of that rule but I don't see where it say you can't do it.
Thank you for the information. Planning on attending Sonoma next weekend. Need to enter NRS togged my license and will just race whatever class they want to put me in for my first race.
I am over 40 so it looks like I have 2-3 class options if I am ready.
Do you guys know if I will be issued a race number there and required to install it on the spot?
For those interested, here is a pic of the bike
Senario 1
Pick a nsf250r and it is NOT sbk eligible due to NOT being manufactured for street use. you have chosen an illegible bike and can only run Formula.
Sernario 2
Pick a ex250 and it IS sbk eligible due to being manufactured for street use.
Now that you have chosen you eligible bike, that coincidentally is a 2 cylinder, you can build it how ever you'd like within the confines of the formula rules.
This i how I understand the wording of the rule book.