Lighter roller weights will increase overall engine RPM (Better acceleration) Heavier roller weights decrease engine RPM (More top end) Over time roller weights will develop flat spots and give poor performance so change every 1000 miles or so. Please choose your Variator Rollers weight carefully, if you still have a standard exhaust fitted, only use the weight recommended by the manufacturer, this information is usually available from your local scooter dealer. If you have a sports exhaust fitted you usually need a lighter roller than standard, a rough guideline is - 1 1/2 to 2 grams lighter than standard roller weight, this is a good starting point, but you may have to fine tune to get optimum performance. Please note Variator Rollers are not exchangeable or returnable.
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