Around a month or.so ago I fitted a D.I.D xtrme upgrade chain and sprocket kit to my new to me Z the oem stuff had done 10500 ish miles and the chain had decided to jump the rear sprocket bending a few links so it was in a word ******ed.

Fitting the kit went very smoothly and all was dandy allthough I did notice tht the final drive was a little noisey for brand new gear. And I had a jolt in the transition between excelleration n deceleration and and vise versa, I had done the cushdrive mod so ruled that imediatly, So I played with the chain tension and got the verniers out to make sure the wheel was perfectly aligned but to no avail, the noise persisted as did the jarring.

Roll on a month and problem is still here, after extensive investigation I realised that the front sprocket meshed very poorly with the chain, as in I could rotate the sprocket around 2mm either either direction before it actually meshed fully with the chain. It was not loose in the spline.

Needless to say I took it back to lbs and told them the issue and they rufunded me, so I ordered a renthal sprocket from eBay 50p cheaper tham JT and swapped them over, noise now gone and the meshing is perfect.

Has anyone else had any JT front sprocket problems?? A one off maybe?? The rear is excellent and fits and meshes perfectly.

Renthal fronts for me from now on I think.

Jon

must have been a dud. ive always rated JT sprockets. used them on loads of bikes

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Must have been a one off lbs has sold many kits with JT sprockets and had no complaints, theyve even ordered another in so we can measure and compare them. Used JT sprockets on my Husqvarna for years and theyve been fine, I just wandered if it was a problem with this specific model??

Sounds like a duff sprocket or an error in sizing. I have used JT on many bikes and never had a problem.

The only difference is that OEM sprockets often have rubber inserts for damping noise and vibration, which aftermarket sprox tend not to have, so they often run a bit noisier. But if the chain isn't meshing perfectly with the sprocket, then something is badly wrong.

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Check the front and rear sprocket line up.The chain poss running out of line.

I've only ever used JT sprockets, never had a problem