Endurance Racing

Endurance Race Classes

For 2023, the number of endurace race classes is being reduced, to reflect the types and capabilities of the machines that are being entered in NWMM events. The three classes are:

Please see the Endurance Rules for exact class requirements.

There are no changes to the types of motorcycles that can be entered, just the class that any given machine would be entered in. This means that for 2023, Supersport, Street 125 motorcycles, and scooters will enter Formula 125 + Scooter, along with existing Formula 125 machines. Former SPec 150 machines will enter the Formula Middleweight class, and Open stays Open.

Some examples of specific motorcycles for the above-listed classes:

Formula 125 + Scooter: Honda XR100, Yamaha YSR50, Honda XR50, Honda Grom, Kawasaki Z125 Pro, Kymco K-Pipe 125, SSR Razkull 125, Yamaha YSR80, Benelli TNT 135, Aprilia RS50 (stock), Yamaha TTR-125, Honda NSR50, Honda NSF100, Piranha SSR 125, Ohvale 110, Aprilia RS50 (modified), Kayo MR125, Honda CBR125, Kawasaki Z125, Vespa smallframe, Vespa largeframe, Lambretta series 1-4, Honda Elite, Yamaha BWS.

Formula Middleweight: Any year YCF F150/155 SM or Kayo MR150, Kawasaki KX65, KTM 65 SX, Honda CRF150F, Chinese YX-engined pitbikes with a 150cc-170cc 2-valve motor (SSR, Pirhana, etc), Ohvale 160, Kawasaki KLX-140, Vespa 100cc 2T scooter, Aprilia RS50 with an overbore

Open: Honda CRF150R, CR/YZ 85 up to 105cc (no powervalve), KTM SX/RM85/post-2019 YZ85 with up to 100cc overbore (powervalve), Kawasaki KX100, Ohvale 190, Pitbikes with Daytona 190 4V motors, 2-valve YX/GPX motors up to 212cc, Honda CRF230, Yamaha XT250.