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. For more info contact Koos Zietsman on +27 (0) 82 783 7463 or koos.ziets@gmail.com
1979 - My first road -Yamaha FS1 50cc 2
1979 - My first road race crash - Yamaha FS1 50cc - Published in Bike & Track Magazine
1980 - Bike SA Article - Download here 
1981 - IT250G Super Single
1981 - YZ250H - Lichtenburg 6-hour 1981
1982 - Lichtenburg 6-hour
1982 - YZ250G Super Single - Kyalami
1984 - RD350YPVS Production Bike 4
1985 - William Walker 2, KooZ 1
1986 - RD350YPVS Production Bike
1987 - Bike SA Article
1987 - Yamaha YZ250N Engine, TZ250L Frame
1988 - Brutus 250GP Bilke
1988 - Brutus 250GP Bilke Specifications - Download here
1988 - Jaap & Koos
1988 -Brutus 250GP Bilke 4
Click on the links below to watch videos of Z-Factor Racing in action