CHAIN DRIVE UNITS are made of the finest & strongest track tested parts. The main shafts are made by SCS gearbox and we have not had one sheer or bake! The sprockets are splined to slide on the shafts for perfect alignment & easy of changing. Drive yolks & couplers slide & bolt on. (sold separately) - We will need to know the roll-out of front & rear tires in inch's & gear ratios to make sure you have the correct tooth count sprockets for your set up - you can list info during check-out in #4 "Other Order Information" or we will call you for it. Thank you for choosing POWER PRO!
The STANDARD unit is good for lighter weight vehicles with under 700hp & smaller front tires!
The HEAVY DUTY unit is good for big horsepower with lots of traction even on heaver vehicles with small front tires.
The EXTRA HEAVY DUTY unit is good for big horsepower with lots of traction even on heaver vehicles with big heavy traction tires on front.