Evolution Catalog (2026)

Power-Drive Motor Sprockets Power-Drive motor sprockets are machined from aircraft quality steel then black oxide coated for maximum durability and years of worry-free riding. Solid sprocket design eliminates the O.E. compensator system for huge weight savings and dramatically increased throttle response. ’84-’06 Motor Sprockets have 5/16” offset (unless noted). Sprocket Nut and washer included with all motor sprockets.

Sprocket Size

Part Number 1012-1751 1012-1771 1012-1781 1012-1079 1012-1078 1012-1801 1012-1791 1004-3010

Application

‘84-’06 Big Twin (Except ’06 Dyna) [0.500” Offset]

27T 25T 24T 22T 21T 24T 24T N/A

‘84-’06 Big Twin (Except ’06 Dyna) ‘84-’06 Big Twin (Except ’06 Dyna) ‘84-’06 Big Twin (Except ’06 Dyna) ‘84-’06 Big Twin (Except ’06 Dyna) ’55-Early ’84 Big Twin (Tapered Shaft)

’36-’54 Big Twin (Tapered Shaft Motor Sprocket Nut (Required)

1012-1771

1004-3010

Sportster Aluminum Motor Sprockets Our Sportster/Buell power-drive motor sprockets are made from 7075 billet aluminum for light weight performance, strength, and durability. They are hard anodized for superior wear resistance. Fits: ‘91 to Present XL and ‘94-’05 Buell (Except Blast).

Sprocket Size

Part Number 1012-1790 1012-1789 1012-1788 1012-1787 1012-1786 1012-1785 1012-1792 1012-1793 1012-1784 1012-1783 1012-1782 1012-1794

27T •

29T 30T 31T 32T 33T 34T 35T 36T 37T 38T

30T •

1012-1788

• 27T Not Threaded for Stator • 1012-1794 30T (Big Twin Splines)