This prelubed Sportsmith treadmill belt fits certain LifeFitness 5500 treadmill serial#s. A top feature of Sportsmith treadmill belts is the non-directional, finger splice seam. Sportsmith treadmill walking belt fitsLifeFitness 5500 treadmills,Serial#s 266037-273953 ,273954-UP, andModel# GK36-00009-0100.
