Good product. Install was super easy. I used a Jagwire Slick LUBE Liner to route the cables internally with easy.
One note, if your bike has outer cable the full length of the wire run, you’ll need another 75” or so of outer. Many road bikes stop at the frame entry/exit points, in which case this kit should have enough outer.

I self installed the cables. They work great. No problems. Installed on my road bike with older Shimano Durace .

5 stars because the Optislick Cables are great. Leaving this review to warn others that this kit will not work on many MTB frames unless it’s a small sized frame running a 1X drivetrain. My fault for not reading the description fully, I searched “Shimano optislick” and blindly added to cart.

I could not find the MTB kit part #Y60198090 in Competitive Cyclist’s catalog.

Everything you need for crisp shifting. Install is easy thanks to Optislick coating.

A great way to get your shifting back to tip-top shape. Cables are slick and slide into the housing very smoothly. Plus it comes with all the housing endcap and cable tips. Invest in these and half-hour of work and you'll be rewarded with crisp shifting.

High quality cables that keep your bike shifting smooth.

Very nice upgrade to any derailleur, these are much smoother than most stock cable setups. Easy to install, compatible with pretty much anything on the market.

Shifting poorly?....inspect your cables and housing (depending on how much you ride), at a minimum, twice a riding season. Poor shifting may be a result of your cable and housing being old and worn out.

One sure fire way to check this is to look at the end of your cable housing to see if the plastic sheath has been pushed back exposing the inner strands. If this is the case, you need to replace these parts.

This kit is everything you need (for ROAD bikes) to get this done. If you are replacing MTB cables, you'll need more housing than what's provided in this kit.

this derailer cable is nice, easy to set up comes with all the pieces to put it all together and the housing is great. The housing can take a beating, overall great product delivers exactly what is needed for a good derailer cable.

Replaced my stainless cables on 2 mountain bikes with these kits, the shifts are so much easier with the optislick cables. Easy to cut and fit. This is a cheap upgrade to most stock cables

Bashed my cable a few seasons ago and until recently had no issues with the shifting. Overtime the plastic wore out and exposed cables rusted causing my shifting to completely suck - slowed, skips a gear, etc. Replacing it was super easy and quick, this cable did the trick, shifts beautifully!