#2 HD Axle kit 61mm solid hub with 44T sprocket

GruBee Skyhawk


PRO-SHOP #2 HD Axle Kit for 2 stroke engines on single speed bikes;    

  • Does away with clamping a driven sprocket to spokes.

Centers sprocket concentricity exactly with axle.  No more wobbly sprockets that throw off your chain.   Runs as smooth as a baby's ass.   

Instruction and information reference on our web site.  www.grubeeinc.com 

Our HD axle gives you the ability to have 3 brakes on a 2 wheeled bike!!!   Disc brake on front, and V-caliper, Disc Brake or Drum Brake on rear wheel. 

Use the optional Disc Brake Rotor screw on hub to allow having DB on the rear.   $12 extra and gets a free ride when ordering HD axle same time.

Axle Hub width between spoke flanges is 61mm;      

Axle Flanges have 18 holes for 12 to 14 ga. spokes.

Best salient feature:  Dual Double Row sealed ball bearings for long life which are much better than the cheap bicycle bearings especially for folks who are going in speeds excess of 25 mph and want extended service life enhancement. with peace of mind safety.   

This Kit comes with special 6 hole 44T sprocket that fits on a solid spin on hub with CCW threads and secured by a lock ring.   For max speed a 36T Sprocket is available separately as well as a 48T for hill country.......    

  Heads up:   Cannot use an ordinary clamp to spokes 9 hole engine kit sprocket with this HD axle.  Must use the supplied 6 hole 44T or optional 36T or 48T special hub sprocket. 

Must be spoke laced by an experienced bicycle mechanic using specialized tools and expertise.     Instructions can be found on our info side of our grubeeinc.com web site. 

We would love to have someone do a YOU TUBE real time installation video showing how to install and describe the features of a 3 brake system..  if interested pls. call me at 580 775 4496 or write to us.