What is classified as lightweight? Don't tell Gu about this I don't want to put the 250 against his SV.
2008 MIDWEST MOTORSPORTS FESTIVAL Series Class Structure
The MIDWEST MOTORSPORTS FESTIVAL class structure is intended to consolidate large numbers of various class structures in to a smaller number of classes that provide a more exciting format of participant racing that can be attractive to a spectator opportunity. Each class will have amateur and expert classifications.
Classes are intended for street production motorcycles and purpose built racing motorcycles. The intention is to provide a racing opportunity to a unique cross section of modified and production motorcycles in two distinct performance categories. There are no horsepower or weight restrictions.
Two stroke, liquid cooled, up to 450cc
Two stroke, air cooled, unlimited displacement
Single cylinder, unlimited displacement
Twin cylinder, air cooled, push rod, unlimited displacement
Twin cylinder, liquid cooled, 3 or less valves per cylinder, unlimited displacement
Twin cylinder, liquid cooled, 4 valves per cylinder, up to 750cc
Twin cylinder, liquid cooled, non-desmodromic valves, 4 valves per cylinder, up to 800cc
Three cylinder, air cooled, non-fuel injected, up to 1200cc
Four cylinder, air-cooled, up to 1200cc
Four cylinders, liquid cooled, 1990 to 1992 model year, up to 650cc
Four cylinder, liquid cooled (oil or water), pre-1990 model year, up to
NOTE: BMW HP2 and Buell XBRR machines are excluded