Cool THANKS , I did run that frame for a bit without the shift kit , exellent frame , but be carefull tightening your motor mounts ,( thin wall cro-mo tubing) . you'll need to run a chain tensioner due to the rear suspension , I made one from derailleur parts , you can buy one online , the one you want attaches to the engine sprocket cover , I found the 38t rear sprocket was the best all around gearing . Save the extra $40 buck's for the extra HD front Freewheel as all the engine's torque it transmitted through it's (dual bearings) , The (std HD ) has only one bearing to carry the Torque ,the one-way rachet is only for starting the engine , the sbp shift kit is the way to go .