This is a spec production class. The bike must be a factory built motorcycle using a sport bike style frame. All stock motorcycle components must be in place and unmodified unless specified below.
1 Maximum 50cc single-cylinder liquid-cooled two-stroke or maximum 80cc single cylinder air-cooled two-stroke or maximum 100cc single cylinder air cooled four stroke Only OEM oversized piston sizes or equivalent permitted.
2 Carburetor modifications are limited to changes in needle jet, pilot jet and main jet only. Main jetting is not to exceed 25% of stock jetting.
3 Only external changes to gearing are allowed.
4 Aftermarket bodywork may be used, but must serve in the same capacity as stock (must use stock mounting points).The stock gas tank must be retained.
5 Upgraded fasteners for safety wiring purposes may be used.
9 Aftermarket DOT approved tires are required, Slicks are not permitted.
10 Foot pegs may be cut and sanded smooth.
11 Battery, wiring harness, lighting coil and ignition switch may be modified or removed. Kill switch must be in working order.
12 Kick starter and/or shaft and gear may be removed. An effective oil seal must be in place.
13 Aftermarket clutch springs and plates are allowed.
14 Aftermarket reeds are allowed (reed cage must remain stock and unmodified).
15 Speedometer and cable may be removed.
16 Self returning throttles must be used.
17 Handlebars & Clip-ons may be used, but must mount in stock position.
18 Motorcycles using factory supplied 10” to 17” wheels are allowed.
19 Modifications to stock air box are allowed.
20 No suspension modifications allowed other than the installation of spacers/tubing springs and fork oil to stiffen the suspension. All stock factory adjustments may be utilized.
21 Only commercially available pump gas may be used. Additives for lubrication and knock suppression will be permitted provided they fall within CMA rules.
