2020


  Saturday Classes       CZ World Championship Classes      Sunday Classes


All classes will have a Novice, Intermediate and Expert designation, except the CZ World Championship Races, CZ Twinport and Legends

  • If there are not enough entries, Novices riders will line up behind the Intermediates and Experts and be turned lose roughly 30 seconds after first line of riders
  • Any CZ racer may enter any class his/her bike(s) falls into depending on year and suspension travel
  • All 100’s will be included in the 125 class. All 175’s will race in the 250 class. Anything over 301cc will race with the 500’s 
  • Entries in the NorCal Vintage 100cc Challenge will be 100cc’s only 
  • Any racer may move up a class (ie: Class of 69 to Class of 74, Class of 78 to Class of 84) but not the reverse
  • All 7/4 inch suspension travel CZs and NON-CZs will race Sunday. Any bike with suspension longer than 7/4 will race Saturday, including all long-travel CZs
  • Saturday is the Robin Hannah Cup, our post-vintage race day featuring Adult Minis, the NorCal Vintage 100cc Challenge and any bike after 1974 with more than 7/4 inch suspension
  • Sunday is Vintage Day, where  vintage CZs and all other vintage brands dice it out. Also on Sunday are the CZ World Championships, open to all riders of any skill level as long as they are mounted on a CZ


The Don Matthews CZ World Championships is founded on the principles of honesty, generosity and good sportsmanship. We are ambassadors of our sport and emphasize cooperation with each other rather than arguing and therefore, there is no protest recourse for racers.


For questions or rules clarification, contact Jim Buckalew @ Facebook or email: gmkjimb@yahoo.com

Saturday Classes

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         SATURDAY (all races have 2 motos)


              THE ROBIN HANNAH CUP


       Adult Minis, 100cc Challenge and all 

           long-travel brands including CZ

   (NOTE: anything longer than 7 inches front

    and 4 inches rear is considered long-travel)


Adult Minis: 

(# MUST BE 18 OR OLDER. ALL SKILL LEVELS)


Adult mini Stocker 1

XR 100, TTR125, DRZ125, KLX 125 and 140 


Adult Mini Stocker 2

CRF150f 


Adult Mini Mods: 2 strokes up to 85cc, modified 4 strokes up to 150cc, CRF150r 


All minis must have 19/16 wheels. Stocker class is limited to springs, exhaust, airbox and jetting changes, no internal engine modifications (cams, porting, rods , larger valves, etc) 


230AC: up to 230cc 4strokes, 2 valve design only, 21/18 wheels, any chassis, brake, wheel travel 

 

NorCal Vintage 100cc Challenge 

         (to be run with 125’s)  

This includes any eligible (21” front and 18/19” rear wheels) 100cc motorcycle up to 1983. Drum brakes are highly encouraged (but not required), unlimited suspension travel, linkage, non-linkage mono shock and twin shock. This is an air cooled only class. Four strokes are welcome, but only air cooled, with a maximum over bore to 150cc’s with 21” front and 18/19 rear” wheels


Class of 78: 

Air-cooled with up to 9 inches of suspension travel, front and rear. These bikes have leading axle front forks and stop with drum brakes, front and rear. (Yamaha early mono shock is OK, but only up to 9” of suspension travel) Any bike from 1975-1978  

  •  125cc over 7/4 Nov 
  •  125cc over 7/4 Int  
  •  125cc over 7/4 Exp  
  •  250cc over 7/4 Nov 
  •  250cc over 7/4 Int  
  •  250cc over 7/4 Exp
  •  500cc over 7/4 Nov 
  •  500cc over 7/4 Int 
  •  500cc over 7/4 Exp


Class  of 84:

 Air- or liquid-cooled with an unlimited amount of travel, front and rear. This includes linkage rear suspension and Single Disc Front Brake. Any bike from 1979-1984

  • Class 84 125cc Nov  
  • Class 84 125cc Int 
  • Class 84 125cc Exp  
  • Class 84 250cc Nov  
  • Class 84 250cc Int  
  • Class 84 500cc Nov  
  • Class 84 500cc Int 
  • Class 84 500cc Exp


Pre-Modern up to 96:

Air or liquid-cooled with an unlimited amount of travel, front and rear disc brakes. This class applies the “Like Design” rule, if later bikes are effectively the same. No Aluminum Frames!

  • Pre-Modern 125cc  Nov
  • Pre-Modern 125cc  Int  
  • Pre-Modern 125cc  Exp  
  • Pre-Modern 250cc Nov  
  • Pre-Modern 250cc Int
  • Pre-Modern 250cc Exp  
  • Pre-Modern 500cc Nov 
  • Pre-Modern 500cc Int  
  • Pre-Modern 500cc Exp 


Modern Class

         (aluminum frames)

  • Modern Class Nov
  • Modern Class Int
  • Modern Class Exp



CZ World Championships

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     SUNDAY (all races have 2 motos)


         Would you like to compete 

     for a CZ World Championship? 


The CZ World Championship Classes are open to all riders of any skill level, using vintage CZs with 7/4" travel.


(NOTE: "+" indicates 'over 50 years old',  "-" indicates 'under 50 years old')


CZ World Championship (WC) Classes:

  • CZ WC 250  -50 
  • CZ WC 250  +50
  • CZ WC 500  -50 
  • CZ WC 500  +50 
  • CZ WC         Women 



Sunday Classes

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      SUNDAY   (all races have 2 motos

                        except Legends)


1st Moto of the Day

  • LEGENDS (National level riders who raced prior to 1975, all engine sizes and bikes welcome.


CZ Twinport:

  • CZ Twinport Challenge: 250/360 race together
  • All skills


CZ Sidepiper Class of 70: 

        250/360's run together

  •  250+  Nov  
  •  250+  Int  
  •  250+  Exp 


CZ Class of 74:

  • CZ Class 74 125cc 7/4 Nov 
  • CZ Class 74 125cc 7/4 Int  
  • CZ Class 74 125cc 7/4 Exp  
  • CZ Class 74 250cc 7/4 Nov 
  • CZ Class 74 250cc 7/4 Int  
  • CZ Class 74 250cc 7/4 Exp  
  • CZ Class 74 500cc 7/4 Nov  
  • CZ Class 74 500cc 7/4 Int  
  • CZ Class 74 500cc 7/4 Exp 
  • CZ Class 74 Women 7/4 
  • CZ Class 74 +50 7/4 Nov  
  • CZ Class 74 +50 7/4 Int  
  • CZ Class 74 +60 7/4 Nov 
  • CZ Class 74 +50 7/4 Exp  
  • CZ Class 74 +60 7/4 Exp 
  • CZ Class 74 +60 7/4 Int 
  • CZ Class 74 +70 7/4 Nov 
  • CZ Class 74 +70 7/4 Int  
  • CZ Class 74 +70 7/4 Exp

 

Non-CZ Class of 69:

This is the Premier Motocross Class. These bikes started life as street bikes but were converted to off-road use. Triumph, Norton, Royal Enfield, BSA and other twins and single 4-strokes and pre-1969 2-strokes. 1920-1969


  • NonCZ Class 69 250cc Nov
  • NonCZ Class 69 250cc Int
  • NonCZ Class 69 250cc Exp 
  • NonCZ Class 69 500cc Nov 
  • NonCZ Class 69 500cc Int 
  • NonCZ Class 69 500cc Exp 


Non-CZ Class 74:

Air-cooled, reed valve or piston port; twin shocks with 7 inches of travel in the front and 4 inches of travel in the rear. These bikes are equipped with single leading drum brakes, front and rear. Any bike from 1970-1974, but this class also includes some newer machines like 1974.5

  • Non CZ Class 74 125cc Nov 
  • Non CZ Class 74 125cc Int  
  • Non CZ Class 74 125cc Exp 
  • Non CZ Class 74 250cc Nov 
  • Non CZ Class 74 250cc Int  
  • Non CZ Class 74 250cc Exp 
  • Non CZ Class 74 500cc Nov 
  • Non CZ Class 74 500cc Int 
  • Non CZ Class 74 500cc Exp 

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