This is the original 90lb front end of the R9. Also fits into the Adder and RX models giving those with less physical strength the ability to cycle the Cobra System crossbow. Ideal for lower power shooting situations like small game hunting, shorter target ranges and reducing bolt penetration. Still provides decent velocity (7.5"/235fps) and penetration. 
 
This 110lb limbset gives your Cobra System crossbow (R9, RX and Adder) a little more zip (7.5"/265fps) than the classic 90lb front end. Originally marketed with the RX, this limbset is still easy to cycle and respectably punches our 7.5" and 15" bolts into the target.