Whenever stricter participation rule comes into effect, there comes only one name in mind. That is, Kyle Busch. Over the years, this man has grown up a notorious reputation for participating in races apart from just Cup Series. The man who made taking part in Truck and Xfinity Series racing along with the Cup Series has not only participated but also shone brightly.

Kyle Busch Rule or Buschwhacker is the system where a Cup Series driver takes part in Xfinity Series or the Truck Series. This is the term that’s used to point out a driver who’s driving both in the top tier and the lower tier in a single season. Brad Keselowski and Kyle Busch are the two notable Buschwhackers.

Are the Cup Series drivers still eligible?

The Kyle Busch Rule is still in effect as the drivers take part in lower tiers races as well as in the top tier. However, that’s not as rampant as they were before. Also, it should be kept in mind that the drivers with only five or more full Cup Series racing experiences are to be allowed in for multi-series racing.

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After a series of restrictions, the number has gone down gradually. Mostly recent restrictions were back in 2017 and 2019 when two sets of restrictions were imposed against Cup Series drivers to prevent them from taking part in the lower tier despite being a part in the top.

Number of allowed races across different tiers

Apart from taking part in the Cup Series, drivers can still take part in Xfinity and Truck Series. However, the number is as small as five Xfinity Series races and five Truck Series races. The drivers have to have three or more full season experience along with it.

In 2017, the Cup Series drivers were allowed a maximum of ten Xfinity Series races and seven Truck Series races. That reduced ahead of the 2018 season when the drivers were allowed to take part in seven Xfinity Series races and five Truck Series races.

Is the Xfinity car slower than cup cars?

The Cup Series being the top tier of NASCAR boasts the top feature against Xfinity. The best of the best are kept for the Cup Series as the cars are faster than Xfinity as they have stronger engines.

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Cup Series cars pump out around 200 miles an hour speed as compared to the 180 miles of Xfinity Series cars. Moreover, the Xfinity Series cars have a shorter wheelbase than that of the Cup Series and are lighter in weight.