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Discussion in 'Moto Club' started by Alex, Aug 20, 2006.
I know what superbike, supersport, and moto gp is, but what is Formula Xtreme?
From what I understand it's 600cc bikes with a little more leeway as far as modifications go.
I think also think Formula Extreme are 600cc with more mods. I believe they allow 650cc and 675cc as well. Before superbike allowed 1000cc, Formula Extreme was 1000cc.
The moto GP bikes are still the fastest.
FX also allows certain 1200-cc aircool V-twins as well. That's why Buell is making the XBRR and I think that the new BMW R1200S is going to be able to compete as well. But no watercooled liter v-twin though.
Formula X is an AMA pro racing series (just like AMA Superbike, Supersport etc...) basically FX rules for modifications for the bikes are the same as the rules for Superbikes, except they are 600s instead of 1000s, as far as different size engines allowed in FX competition, here is a break down of them allowed for next year
# 550cc-600cc 4-stroke liquid-cooled 4-valve four cylinders
# 650cc-675cc 4-stroke liquid-cooled 4-valve three cylinders
# 650cc-850cc 4-stroke liquid-cooled 4-valve twin cylinders
# 990cc-1100cc 4-stroke air/oil-cooled 4-valve desmo twin cylinders
# 990cc-1200cc 4-stroke air/oil-cooled 4-valve pushrod twin cylinders
# 900cc-1350cc 4-stroke air/oil-cooled 2-valve pushrod twin cylinders
But does that include "oil cooled" v-twins as well? Buell?
Sorry J/K this topic was sent through the ringer on another forum and I'm sure it won't end soon! LMAO
Here is info from the AMA rule book
AMA Formula Xtreme Series Class & Qualifying
AMA Formula Xtreme motorcycles are allowed the largest displacement engines in the AMA
road racing and are based on production four-stroke street motorcycles. The motorcycles in
this class must have the following engine displacements:
450cc-600cc 4-stroke, multi-cylinder
595cc-750cc 4-stroke, liquid-cooled twin-cylinder
850cc-1350cc 4-stroke, air-cooled twin-cylinder
AMA Formula Xtreme final races are normally 60 kilometers in length, except at the Daytona
200, where the race is 200 miles.
Timed qualifying is used in AMA Formula Xtreme. For timed qualifying events, a riders best
lap time must be within 112% of the fastest qualifying riders best lap time in order to
pre-qualify for one of the available grid positions in the final.