VARIABLE TUNING SET FOR ORIGINAL VARIATORS AND ALMOST ALL TUNING VARIATORS. THE SPEED-UP SHIMS CAN INFLUENCE THE LENGTH OF THE SLEEVE: AN EXTENSION USUALLY IMPROVES THE ACCELERATION AND SHORTENING INCREASES THE TOP SPEED. BEFORE INSTALLATION, BE SURE TO MEASURE THE LENGTH OF THE ORIGINAL SLEEVE AND THEN CHANGE THE SIZE OF THE SPEED-UP SLEEVE WITH THE WASHERS ACCORDINGLY! KIT CONTAINS THE OPEN RACING VARIATOR SLEEVE AND 15 SPACERS, EACH WITH 5 DISCS WITH 0.1, 0.2 AND 0.5MM THICKNESSES. SLEEVE SIZE: 13X18X37. WHEN USING ON TUNED VARIATORS, PLEASE MEASURE THE DIAMETER OF THE SLEEVE, WHICH SHOULD BE 18MM. ATTENTION! ON MINARELLI ENGINES, THE TUNING KIT CAN AFFECT THE OPERATION OF THE KICK-STARTER GEAR. A MAJOR SHORTENING MUST BE MADE UP FOR WITH SHIMS BEHIND THE VARIATOR.

FOR USE WITH 18MM VARIATOR BOSSES ONLY! INCLUDES

10 SHIMS OF EACH SIZE: .1mm, .2mm AND .5mm

FITS STOCK VARIATORS ON YAMAHA JOG, ZUMA AND VINO, APRILIA SR50,

MALAGUTI F12 AND F15, ADLY SILVER FOX AND THUNDER BIKE,

AND MANY MORE MODELS THAT USE A HORIZONTAL MINARELLI ENGINE.