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- Use to measure the outside diameter of cam drive gears
- Precision machined from a high-quality steel alloy
- Available in .105 or .108 dia.
- Made in the U.S.A.; sold in pairs
NOTE: There are two basic differences between 90-up cam gear sizes and earlier years. The overall range of gear pin measurements (from the largest gears to the smallest) was reduced in 90 from .006 to .003. The large gears are the same size for both 77-89 and 90-up (green and black color codes). Gear size measurements (over pins) are listed in the 1990 H-D manual using .108 pins instead of .105 pins (as for earlier years). For the same gear, measurement over .108 pins will be approximately .012 larger than for .105 pins. For 92 engines, stock cam gears are interchangeable with earlier versions but gear outer diameters have been reduced by .025.
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