2008 SEMRA Thumpstar Spec Class

 
There will be two spec classes for 2008. Heavyweight will be for riders who weigh more than 195 pounds with gear. Lightweight will be for riders weighing 194 pounds or less with gear. Both classes will be on the track concurrently.

1. Must run a Thumpstar TDX Super Motorcycle
2. Motorcycle must pass SEMRA tech
3. Motorcycle must be stock in appearance and must retain Thumpstar/SEMRA decals. Color changes of bodywork allowed.  Additional stickers allowed, but must not cover stock stickers.
4. Must use stock motor. NO MOTOR MODIFICATION ALLOWED. Motors will have a seal and must be unbroken at tech to enter class.
5. Electric starter must remain on motor, but battery and wiring may be removed. Bike must run stock ignition. No aftermarket “Black boxes”
6. Must use stock carb. and intake. No modifications allowed. Jetting changes are allowed.
7. Must use UNMODIFIED stock exhaust.
8. Gearing changes are allowed.
9. Must use stock fork and shocks. Springs, valving and oil may be changed.
10. Must use stock brake master cylinders, calipers, and rotors. Brake pads may be changed to aftermarket.
11. Must use stock supplied 12” wheels.
12. Tires must be commercially available DOT tires. No slicks or rain tires.
13. You may change handlebars, grips, and levers.
14. If it doesn’t say you can change it, don’t!

You must be a licensed SEMRA member with a current 2008 license.  The bikes will have custom number plates with your SEMRA number included!  Bikes will be eligible to run in the Spec class in our normal sprint series, and there will also be a spec class in the endurance races.