I've got the 121-2, the track frame looks the same. However, the rollers are different, mine have a central wheel that runs in the Grove these run either side, the cheaper rollers are junk really, I've got two with only 200 hrs that are getting loose, the original style one's show loads of wear like yours but are still perfectly serviceable, the cheaper ones are ball bearings with grease and rubber lip seals £130, the original ones are oil filled with bushes and metal face seals £170 and I think the OEM will probably do 10 times the work.
That’s great information! Thank you. I like the 121-2. Very good machine. I bought this 121-3 with 5000hrs on it and it had been pretty abused. Spent many hrs fixing it up when I brought it home. It’s amazing how different similar models can be lol. I would have bought OEM but much more expensive so I thought I would take a chance. Probably have about 100 hrs on this roller. Good so far, guess only time will tell. Thanks for watching!
