The Lightning P-38 Idler Kit includes a Power Idler with a Single-Sided Clamp-On Chain Keeper, a Return Idler with a Single-Sided Clamp-On Chain Keeper and all the necessary hardware to make it work. This kit provides smooth, quiet, long lasting performance.
Note: Some of the older Lightning bikes use a smaller diameter idler. Please ensure you can fit a 2.75" idler in the back if you have an older bike—if not, T-Cycle can custom produce a kit to fit these bikes based on the newer style kits, just send us an email.
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Nice upgrade from Lightning stock idlers..
It was good. A much more robust design that stock. The only gripe I would have is the front idler bolt was way too long. I ended up using my existing bolt which was in very good shape. I am very happy with the setup. I am hoping that this will correct a problem with chain wear due to excessive cross tracking on the rear cassette. I think it will as t-cycle rear idler moves with the drive-line.

P38 idler review
My original power idler was worn down to nubs and making awful grinding sound while climbing. Switched these in and all is well again. After first 50 miles of break-in they run silent and smooth. I sprung the extra $ for the titanium version which I think is worth it. I have Terracycle idlers on my Azub Six to replace the guide tubes and on my Rans Screamer recumbent as well. Excellent products.

P38 idler kit
Easy to install and a big improvement over the stock idlers.... Which had worn down and were becoming VERY noisy. Premium materials and quiet operation are outstanding. I have purchased items from T cycle in the past... Accessory mounts, underseat racks and will continue to do so in the future when looking for exceptional products.... Thanks!!