Harley sportster 883 gas mileage

For around town there is not much that can be done to improve gas mileage beyond regular maintenence and driving habits. However, for high speed cruising, 60 mph and above, the 883's respond very well to taller gearing. Unlike offshore bikes designed for high rpm (~4,000+) with relatively low torque, Harleys are designed with high torque for low rpm work, 2900-3100 rpm.

For 1991-2003, 883's if you ride mostly above 70 mph you can use a 30 tooth front pulley. Speeds below 70, or mostly around town want a 29 tooth.

For 2004-Up, 883's for the same as above want a 32 front pulley. And for speeds above 70 mph want also a 66 tooth rear pulley. Pulleys are available on the web, just do a search for "Sportster Front Transmission Pulley".