Dozer

Hi, yes you are correct, the bolt holes go all the way through, they were just caked with several decades of brake dust, grease and mud past where the bolts normally seated so the bolts felt like they were bottomed out.

Agreed, you can still get quality parts, suitable for the application, and not break the bank. I buy from Rocky Mountain ATV/MC a lot and run their "primary drive" chain/sprocket sets on several bikes and they are very affordable. I have 12 bikes (5 are TY's) so I try to get the best quality I can at the best price. Wash and lube them after use (like you should any chain) and they last several years. Judging by some of the responses maybe I wasn't clear in regards to this bike, it was a near basket case when I got it and I got it for my wife to use as a trail bike and my son to play with trials stuff on (when he's not on his KTM). When the next shipment of parts arrives I'll have <$1k in this bike and it will be fully functioning. AKA, a "beater" bike that can be dropped without me worrying about it, 3 of the 5 TY's I have are "very good" & all original condition bikes that I try not to bang up. Thanks to those that gave positive feedback, I found a Sunstar 50T in steel for $30 that will work fine.

Hi all, I've bringing another TY175 back to life and am looking for a low budget rear sprocket, steel if possible but I'll take aluminum if that's the only option.The bike has currently has a vintage "PBI 7033-49" aluminum sprocket, PBI still sells these for about $60 shipped. I just tried a JT Sprockets JTR1842-49 ($20) which is supposed to fit, the holes line up however the sprocket is milled very thin where it meets the hub so the bolts wont seat all of the in. Unless there's a aftermarket spacer or something to get I'll have to return the JT sprocket. I plan on calling JT Monday morning (they are made in USA) and asking them for details as well. Here's the milled JT so you can see what the problem is: Anyone got a lead on a sprocket known to fit a TY175 rear?

First post in 2020 (and the 1st for me on this forum) I suppose: From right to left: 1975 TY80 1975 TY250 1975 TY175 1983 TY350 I recently picked up a '76 TY175 in red that's not in this picture, the other bikes are 2 antique Harley's and the KTM single track bikes my son and I ride.