Fertilizer Equipment Specialists of Clear Lake, Iowa, has posted $750 in bonus money for the upcoming three-race Iowa weekend on the Repairable Vehicles.com Tri-State Series.

The driver with the longest tow by miles in each of the June 27-29 events will receive $250.

Weekend races are set for Friday at Britt’s Hancock County Speedway; Saturday at Webster City’s Hamilton County Speedway; and Sunday at Mason City Motor Speedway. Each event pays $2,000-to-win.

Two-time and reigning series champion Blair Nothdurft of Renner, S.D., is leading Tri-State Series points.