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3DAYS

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24DAYS

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31DAYS

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38DAYS

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Late Registraton starts March 24
$250 Late/Walk-Up Fee 

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PRO TOUR WINTERNATS - RNDS 1&2 March 27-29, 2026
Musselman Honda Circuit
11800 S Harrison Rd
Tucson, AZ 85747
(520) 245-5278
mhcircuit.com / Google Maps
No Weds practice. Unofficial Thursday practice run by SKUSA.
Do not ship packages to the track, ship to your hotel or hold for pickup with carrier.
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SKUSA Pro Tour

SKUSA Claims Engine at Phoenix SpringNationals
Written by John Motley - National Tech Director   
Friday, 18 May 2018 21:44
At our recent SpringNationals, SKUSA exercised its option to claim a competitor’s engine. We have done so periodically to insure that there are no special or outstanding engines, or any unauthorized modifications that require additional inspection not available at the race. IAME engines used in SKUSA competition are remarkably identical, reflecting the high quality and manufacturing ability of IAME. However, the perception exists of special or significantly better performing engines. To refute this, we intend to exercise our option to claim engines from time to time. Note that the engine claimed met all applicable SKUSA rules and was replaced at the event with a complete new engine package as well as a check for $500, as SKUSA rules provide.