Two NASCAR Camping World Truck Series teams were penalized following the LTi Printing 200 last weekend at Michigan International Speedway.

The No. 99 MDM Motorsports Chevrolet failed post-race inspection and was handed an L1-level penalty. Under section 20.4.12.b of the NASCAR Rule Book concerning the truck bed cover it states, “Vent holes at the bed top must be configured for air intake only.”

In his first NCWTS start of the season, Darrell Wallace Jr. scored the victory at Michigan. However, the finish was ruled encumbered and crew chief Shane Huffman was suspended from the next Truck Series race (tonight at Bristol Motor Speedway). Huffman was fined $5,000 and MDM Motorsports was docked 10 owner points.

The No. 98 ThorSport Racing Toyota was also penalized, incurring two penalties after last Saturday’s race. An L1-level penalty was issued after the truck failed height measurements (section 20.17.3.2.1.2) in post-race inspection. Crew chief Jeff Hensley was fined $5,000 and suspended from the next Truck Series event, and the team was docked 10 driver and owner points. Driver Grant Enfinger’s eighth-place finish was encumbered and the point penalty pushes him to 24 points out for the last spot in the eight-driver field.

Additionally, a safety penalty (section 20.17.2.1 of the NASCAR rulebook) was issued after weight was found to be affixed improperly during pre-qualifying inspection.

Hensley was suspended for an additional race, giving him a two-race suspension, and truck chief Josh Hankish was also suspended for the next two Truck Series races. Enfinger’s eighth-place finish remains encumbered.