Mufflers required at Valley Speedway
GRAIN VALLEY, Mo. -- All cars competing in the USMTS Casey's Cup Series event on Thursday, April 18, at the Valley Speedway must use mufflers.
Approved mufflers are the Beyea dirt modified muffler (#MUF3DM or MUF3.5DM) or the Schoenfeld muffler (#609 or #112535).
The muffler must be secured in such a fashion that it does not come off on the track.
We recommend Day Motor Sports for your muffler needs. Call them toll-free at 800-543-6238 or online at www.daymotorsports.com.
For more information, call the track at 816-349-9893.
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