7000 Series T-6 CNC Machined aluminum plate transformed into a ring of beauty!  Like Crupi's original 5-bolt gears, these are machined (not stamped) right here in the USA!  The 7000 series aluminum is more expensive but it makes a stronger and stiffer gear.  This along with a slightly thicker gear makes them super strong and ready to take whatever the Elite riders of the world can dish out!  

With the many gear sizes Crupi offers, we thought it would be good to offer you the most complete gear ratio charts available!

You can download and print any of these charts in a PDF format.

20 x 1-1/8 with 20 x 1" Tires              20 x 1.75 with 20 x 1.75 Tires

20 x 1-1/8 with 20 x 1-1/8" Tires             24 x 1-1/8 with 24 x 1-1/8" Tires

20 x 1-1/8 with 20 x 1-3/8" Tires            24 x 1.50 with 24 x 1.50 Tires       

20 x 1-3/8 with 20 x 1-3/8" Tires           24 x 1.50 with 24 x 1.75 Tires

20 x 1.50 with 20 x 1.50 Tires                  24 x 1.75 with 24 x 1.75 Tires