Drop in replacement for the stock fifth gear. This Kayser 5th gear is 5% taller which will lower your RPM while cruising in 5th gear. Great for touring at high speeds. Does not require any other modification to the transmission. Fits all Airhead 5 speed gearboxes with 15 degree helical gears from 1974 up through 03/82. Only compatible with square shaped shift dog style 4th gear. If your 4th gear has rounded style shift dog windows, 4th gear will also need to be replaced. Call for details. See our 17.5 degree tall fifth gear for later models part number 2322993.
Only one left, Kayser is no longer in business.
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