Truvativ Trushift 42T x 104mm BCD Steel Ring Black V4

I'm flabbergasted that I can STILL get this exact replacement TRUVATIV outer front chainring for my 2004 (21 year-old!) Specialized Hardrock "Sport" 24 speed (3 chainrings in front) MTB. The reason I replaced this OUTER front chainring was that the bike had around 3,500 miles on it, the original chain was past the .75 wear limit, and I noticed a grinding and rough feeling when pedaling on the smallest REAR cog (11 tooth) no matter whether I was on the middle or outer front chainring. My original middle and outer chainrings looked slightly "used" but the teeth don't look worn, the rear cassette doesn't really look worn out, but the chain was worn so I figured I'd do the chain first (Shimano HG40) which got rid of a lot of the noise and rough feeling when riding on the smallest rear cog (11 tooth), but not all of it, and then the new chain skipped a few times when I was standing up pedaling on the 11 tooth rear cog, which never happened before. Then I replaced the rear cassette and the middle and outer front rings and that pretty much fixed the grinding that must have been a combination of the worn chain and I guess a somewhat worn rear cassette. It also got rid of the chain skipping on the 11-tooth rear cog. In any event the drivetrain is quiet and pretty smooth now.Only ONE negative on this chainring but it is not the chainring's fault. I was hoping I could put this "outer" 42 tooth ring on the MIDDLE chainring position on my bike so I could make it a 1x8 and get rid of the front derailleur, front shifter, and eliminate the other two front chainrings. But this OUTER ring doesn't fit over the middle CHAINRING spider arms on the TRUVATIV 175MM ISOFLOW crankarm. I would either have to grind some material off the inside edge of 4 mounting tabs on this chainring so it would slide over the 4 crank arm shoulders or grind some of the crankarm middle ring position crankarm shoulders to get this to fit. I think they maybe deigned the crankarm and chainrings this way to make sure people didn't mix up outer and middle chainrings when mounting them on the crank. Each TUVATIV "Trushift" outer and middle ring has asymetrical ramps and pins to help shifting back and forth between the middle and outer chainrings. I have a feeling that if you installed them reversed on the crankarm it might actually damage the chain/sprockets, not shift correctly, and maybe even jam the chain between the chainrings. But I think the OUTER front ring might work fine if installed by itself on the MIDDLE chainring position to create a 1x8 drivetrain because then you aren't using any of the shifting pins or ramps on the ring. But as I said, the outer 42-tooth ring will NOT mount on the middle chainring position without some chainring or crank arm modifications. I've been looking for a 42 tooth chainring that WILL fit the middle position on this crankarm without any modifications, but that may not exist. Far as I know, back in 2004 when this bike was made, nobody was making single front chainring MTBS with 9-12 speed cassettes and the idea of using a big 42-toothed OUTER chainring like this one on the MIDDLE chainring position probably didn't occur to anyone. I see current 1-9/12 speed MTBs with a smaller 30 tooth single front rings and the same small11-tooth cog I have on my cassette, but those are 27.5 or 29-inch wheels which cover more ground per pedal revolution. I COULD just use my current 32 tooth MIDDLE ring to create a 1/8, but I want the HIGHER overall gearing of the 42-tooth for fast street riding when using my 13 or 11 tooth rear cogs.

Don’t use it for an electric Bycicle with mid drive Bosch motor as the thickness of the Sprocket is half of the original.I am still using it and it has not given any trouble yet but for my application it is just a matter of time .My mistake as I have focused to much on the price. I am sure for a regular non electric bike or an e bike with Hub motor it’s fine to use but with a mid drive all thE power is transferred over the chain drive that’s the input from the rider plus the motor which can definitely add up .

Ended up returning because it did not fit the crank I had although the diameter was correct ... Was just looking to get a few more teeth on it to speed up my mountain bike on the road ... too much hassle for something that did not work out ... :-/

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This chainring is a perfect replacement for a worn chainring on a Marin Ovation crankset. The original crankset appears to be unobtainable so this item saves having to find & buy a full crankset that actually fits.

bon produit

Had to grind down the inner legs, but seems fine now. BCD matches but not a perfect replacement for my original Truvativ ring

Wanna replace your chain every 500 miles? How bout front derailleur catastrophic failure?Make sure you replace your chainrings with the correct corresponding chain size. 9,10,11,&12 speed chains are all different sizes, so the chainring must match to the chain. Good luck

Love!!! So glad I finally go this replaced. Lightweight, easy to install and makes for a smoother shifting and functioning bicycle!

Bien

Used this to replace a worn chainring on my commuter bike with Shimano SLX cranks. Works great, and way cheaper than buying a new crankset. Seems to shift fine although I never really leave the big ring on my commute.

Ich habe dieses Kettenblatt auf gut Glück gekauft, da der Anbieter leider keinerlei Informationen dazu hat.Es handelt sich um ein Kettenblatt mit Steighilfen, ist also für Kettenschaltungen gedacht.Da es dementsprechend gekröpft ist, konnte ich es für meinen Kurbelsatz nicht verwenden.Eigentlich wollte ich dazu nichts schreiben, da ich es für die Aufgabe des Anbieters halte das zu tun.Aber dafür kann ja das Produkt nicht, denn das macht einen durchaus brauchbaren EIndruck.Nur kann ich leider nichts über die Funktionalität der Steighilfen sagen, da ich keine Kettenschaltungen fahre.