Next Gen Classes

16.5.5 PRE-MODERN FOUR-STROKE: Certain four-stroke motorcycles 250-600cc that were produced within the guidelines of the Pre-Modern class specifications. Eligible machines include, but are not limited to: • 1984 ATK 560 • 1984 Honda XL350R, XL600R • 1984-’89 Honda XR250R • 1984-’85 Honda XR350R • 1983-’84 Honda XR500R • 1983-’89 Honda XR600R • 1987-’88 Husqvarna 510TC, 510TE, 510TX • 1982 KTM 500K4, 500XC • 1983-’88 KTM Any four-stroke, rear drum • 1986-’87 Yamaha TT250 • 1985-’86 Yamaha TT600 • 1985-”00 Yamaha XT350 • 1984-’89 Yamaha XT600 • Four-stroke, dual-disc, up to 1997 and like-design models. Examples are: • 1985-‘01 ATK DS/XC/MX 350-605 • 1990-’98 Husaberg FE/FC 350-650 • 1989-’99 Husqvarna TC/TE/TX/WXC/WXE 350-610 • 1994-’03 Vertematti/VOR EN/MX 495-503 • Japanese off-road and trail bikes: Honda XL/XR, Kawasaki KLX, Suzuki DR, Yamaha TTR/XT • Yamaha YZ400F, and its variants, are not allowed • Modern, liquid-cooled Japanese four-stroke motocross bikes (CR-F, KX-F, RMZ, YZ-F) are not allowed

16.6 NEXT GEN CLASSES

16.6.1 NEXT GEN 1: Next Gen machines incorporate nearly all of features of current motorcycle technology, including front and rear hydraulic disc brakes, upsidedown front forks, and twin-spar frames. Class eligible machines shall consist of circa 1986 to 1998 two- and four- stroke motorcycles which were factoryproduced with steel main frames. Aluminum sub-frame and swingarm are allowed. Motorcycles equipped with an aluminum main frame are not allowed. 16.6.2 NEXT GEN 1- 125: Certain two-stroke motorcycles 100-125cc that were produced within the guidelines of the Next Gen 1 class specifications. Eligible machines include, but are not limited to: • 1987-’97 Honda CR125R • 1989-’99 Husqvarna 125 all • 1989-’02 Gas Gas 125 • 1986-’98 Kawasaki KX125 • 1986-’00 KTM 125 • 1987-00’ Suzuki RM125 • 1986-’98 TM Racing 125 • 1988-’01 Yamaha YZ125