Chainrings

A good chainring has always been hard to find and if you wanted to experiment with larger size gears, your options were limited. Why buy a Crupi chainring over the others?  Instead of stamping our rings, we CNC machine them from 6061-T6 aluminum plate.  This ensures that each gear is perfectly round and flat.  This helps eliminate tight and loose spots in your chain. You don’t have to change your chainring bolts either as they use standard BMX bolts. User friendliness at it’s finest!

New sizes now available

34t, 35t and 36t!

  • 6061 T-6 CNC Machined Aluminum

  • 110mm bolt pattern

  • Available in sizes 34t through 51t (Choose when ordering)

  • Polished and Black

Chainrings $ 45.00 each

Size:  
Color Options:  
 
With the many gear sizes Crupi now 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

 

Rhythm Chain Ring Bolts

Available in Aluminum or Steel, Set of 5

Aluminum at $ 17.99 per set

Steel are $ 13.00 per set

Type:  

Sprockets  SEE OUR SALE PAGE

Crupi sprockets are not just another CNC machined sprocket, they  are precise, strong and great looking.  What makes ours better than all the others is we make them fit certain crank spindles instead of trying to make them fit them all.  We eliminate the center spacer making a better fit which allows better chain alignment by practically eliminating all side to side wobbling.  Made to fit Profile, Redline and any crank with a 3/4" spindle.  38t through 47t available in polished or black. 

  • 6061 T-6 CNC Machined Aluminum

  • Available in sizes 38t through 47t (Choose when ordering)

  • Polished and Black

    •

Polished Sprockets $ 46.00 each

Size:  
Color Options:  

Crupi Parts

401 N First AVe Arcadia, California 91006  

Phone: 626.445.1656 Fax: 626.445.1476

E-Mail: greg@CrupiBmx.com